Suppose you have 3 jars with the following contents. Jar 1 has 1 white ball and 4 black balls. Jar 2 has 2 white balls and 1 black ball. Jar 3 has 3 white balls and 2 black balls. One jar is to be ​selected, and then 1 ball is to be drawn from the selected jar. The probabilities of selecting the​ first, second, and third jars are​ 1/2​, ​1/3​, and ​1/6 respectively. Find the probability the ball was drawn from Jar 1​, given that the ball is white.

Answers

Answer 1
Answer:

The probability is:

              [tex]\dfrac{9}{38}[/tex]

Step-by-step explanation:

We need to use the Baye's theorem in order to find the probability .

Jar 1:  has 1 white ball and 4 black balls.

This means that the probability of white ball is: 1/5

( since there are a total of 1+4=5 balls out of which 1 is white)

Jar 2: has 2 white balls and 1 black ball.

This means that the probability of white ball is: 2/3

( since there are a total of 2+1=3 balls out of which 2 are white)

Jar 3 : has 3 white balls and 2 black balls.

This means that the probability of white ball is: 3/5

( since there are a total of 3+2=5 balls out of which 3 are white)

Hence, the probability the ball was drawn from Jar 1​, given that the ball is white is:

Ratio of drawing jar 1 and a white ball from it to the sum of choosing each jar and a white ball from it.

i.e.

[tex]=\dfrac{\dfrac{1}{2}\times \dfrac{1}{5}}{\dfrac{1}{2}\times \dfrac{1}{5}+\dfrac{1}{3}\times \dfrac{2}{3}+\dfrac{1}{6}\times \dfrac{3}{5}}\\\\\\=\dfrac{\dfrac{1}{10}}{\dfrac{1}{10}+\dfrac{2}{9}+\dfrac{1}{10}}\\\\\\=\dfrac{\dfrac{1}{10}}{\dfrac{2}{10}+\dfrac{2}{9}}\\\\\\=\dfrac{\dfrac{1}{10}}{\dfrac{38}{90}}\\\\\\=\dfrac{9}{38}[/tex]

Answer 2
Final answer:

The probability that a drawn white ball came from Jar 1, given the stated conditions, is approximately 0.286 or 28.6%.

Explanation:

This problem can be solved using the concept of conditional probability. Let's define the events as follows:

J1, J2, and J3 are the events of selecting Jars 1, 2, and 3 respectively.W is the event of drawing a white ball.

The question requires us to find P(J1|W), that is, the probability that the ball came from Jar 1 given that it is white. Using Bayes' theorem, we can write this as:

P(J1|W) = [P(W|J1) * P(J1)] / P(W). Here, P(W|J1) is the probability of drawing a white ball from Jar 1, P(J1) is the probability of choosing Jar 1, and P(W) is the total probability of drawing a white ball.

We can find these probabilities as:

P(W|J1) = 1/5 (since Jar 1 contains 1 white and 4 black balls)P(J1) = 1/2 (given in the problem)P(W) should be calculated as: [P(W|J1) * P(J1)] + [P(W|J2) * P(J2)] + [P(W|J3) * P(J3)] = [(1/5) * (1/2)] + [(2/3) * (1/3)] + [(3/5) * (1/6)] = 0.35

Substituting these values into the Bayes' theorem, we find P(J1|W) = [(1/5) * (1/2)] / 0.35 = 0.286 approximately. Therefore, there is approximately a 28.6% chance that the drawn white ball came from Jar 1.

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Related Questions

f(x)=8−4x−x^3
g(x)=x^2+7x−9

Find f(x)+g(x).

Select one:
a. x^3+x^2+3x−1
b. −x^3+x+3x−1
c. −x^3+x^2+11x−9
d. 8x^2+3x−9x^3

Answers

Answer:

its answer is -x^3+x^2+3x-1

Step-by-step explanation:

f(x) +g(x)

= 8-4x-x^3+x^2+7x-9

= -x^3+x^2+3x-1

Answer:

The value of f(x)+g(x) is [tex]-x^3+x^2+3x-1[/tex].

Step-by-step explanation:

The given functions are

[tex]f(x)=8-4x-x^3[/tex]

[tex]g(x)=x^2+7x-9[/tex]

We have to find the value of f(x)+g(x).

[tex]f(x)+g(x)=(8-4x-x^3)+(x^2+7x-9)[/tex]

[tex]f(x)+g(x)=8-4x-x^3+x^2+7x-9[/tex]

On combining like terms we get

[tex]f(x)+g(x)=-x^3+x^2+(-4x+7x)+(8-9)[/tex]

On simplification we get

[tex]f(x)+g(x)=-x^3+x^2+3x-1[/tex]

Therefore the value of f(x)+g(x) is [tex]-x^3+x^2+3x-1[/tex].

VWX and NOP are similar. If mV = 44° and mP = 66°, what is
mW?
A.
22°
B.
33°
C.
35°
D.
70°

Answers

Answer:

D. 70 degrees.

Step-by-step explanation:

Because the 2 triangles are similar corresponding angles are congruent.

So m < P = m< X = 66 degrees.

And since there are 180 degrees in a triangle:

m < W = 180 - (m < V + m < X)

= 180 - (44 + 66)

= 70 degrees.

The measure of the angle ∠W is 70°.

What is triangle?

A triangle is a two - dimensional figure with three sides and three angles.

The sum of the angles of the triangle is equal to 180 degrees.

∠A + ∠B + ∠C = 180°

Given is that two sides of a triangle measure 7 feet and 19 feet.

Since the triangles VWX and triangle NOP are similar, we can say that the corresponding angles of both triangles is same.

∠W = ∠O

Also -

∠O + ∠N + ∠P = 180

∠O = 180 - 110

∠O = 70°

∠W = ∠O = 70°

Therefore, the measure of the angle ∠W is 70°.

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Drag each label to the correct location on the chart.

Classify the expressions based on whether they represent real numbers or complex numbers.

The numbers are √(-5)^2, 400, -9+10i^2, 0+5i, i^8, √-16, -2+6i, and √10

Thank you!


Answers

Answer:

Step-by-step explanation:

WANT FREE 20 POINTS + BRAINLIEST? answer this geometry question correct and i got you

Which statements are true based on the diagram? Select three options.

A. Points N and K are on plane A and plane S.

B. Points P and M are on plane B and plane S.

C. Point P is the intersection of line n and line g.

D. Points M, P, and Q are noncollinear.

E. Line d intersects plane A at point N.

Answers

Answer:

the three options i chose:

A. n and k are on plane A and s

C. p is the inteersection of n and g

D. those 3 lines are noncollinear

Answer:

The correct options are A, C and D.

Step-by-step explanation:

From the given figure it is clear that points N and K lie on the line f, and line f is the intersection line of plane A and S.

So, points N and K are on plane A and S. Option A is correct.

Points P and M lie on the line n, and line n is not the intersection line of plane B and S.

We clearly see that point M is not on the plane S.

So, option B is incorrect.

Point P is the intersection of line n and line g.

So, option C is correct.

Point M and P lie on line n and point P and Q lie on line g.

Three points are collinear if they are lie on a straight line.

Since points M, P and Q are not collinear, therefore they are noncollinear.

So, option D is correct.

Line d intersects plane A at point L.

So, option E is incorrect.

Huixian needs to pack 171 pens, 63 pencil, and 27 erasers into identical bags so that each item is equally distributed among the gift bags. Find the largest number of gift bags that can be packed, and the number of each item in a gift bag

Answers

Answer:

87 gift bags

Step-by-step explanation:

Answer:

6 pens

2 pencils

1 eraser in each gift bag

Most number of Gift Bags = 27.

Step-by-step explanation:

There will be some bags left over. The limiting factor is the erasers. At most, you can have 27 erasers and therefore 27 gift bags.

171 pens: 171/27 = 6 (you have to round down). The number of pens left over is 9.

(27*6 = 162)    

171 - 162 = 9

63 Pencils: 63/27 = 2 pencils per gift bag. There will be

63 - 2*27

63 - 54

9 pencils will be left over.

The Ericsson method is one of several methods claimed to increase the likelihood of a baby girl. In a clinical​ trial, results could be analyzed with a formal hypothesis test with the alternative hypothesis of pgreater than>​0.5, which corresponds to the claim that the method increases the likelihood of having a​ girl, so that the proportion of girls is >0.5. If you have an interest in establishing the success of the​ method, which of the following​ P-values would you​ prefer: 0.999,​ 0.5, 0.95,​ 0.05, 0.01,​ 0.001? Why?

Answers

Answer:

The preferred p-value among the options offered is 0.001. The reason is because p-value represents the minimum probability of committing the type I error, that is, the probability of rejecting the null hypothesis, with the information contained in the sample, given that this hypothesis is true. The p-value of 0.001 is the lowest value proposed for this probability. Therefore, it supports more evidence that the null hypothesis is false.

Step-by-step explanation:

The preferred P-value among the options provided is 0.001.

0.001 is the preferred p-value simply because it shows the minimum probability of committing an error, it also implies that the probability of rejecting the null hypothesis based on the information presented in the sample, considering that the hypothesis is true.  

Further Explanation

Therefore, the p-value 0.001 is the lowest value proposed for this probability and it also corresponds to the sample of evidence that supports the alternative hypothesis which shows the method is effective.

Hypothesis testing refers to an act in statistics in which an analyst test the assumption as regards to a population parameter.

The methodology to be used by analysts is based on the nature of the data that are used and the purpose of the analysis

An analysts test a sample to accept or reject a null hypothesis. The outcome of the tests will reveal the analysis if his primary hypothesis is true or not. If the analysis of the tests is not true, it then means the analysts will have to formulate a new hypothesis and do the analysis again.

It implies the analysts will continue to repeat the process until the analysis shows the data hypothesis is true.  

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KEYWORDS:

hypothesis testericsson methodanalysisproportionprobability

In a survey, adults and children were asked whether they prefer hamburgers or pizza. The survey data are shown in the relative frequency table.

About 60% of adults prefer pizza.

Compare this with the percentage of children who prefer pizza.

Hamburgers Pizza Total
Adults 0.24 0.36 0.60
Children 0.11 0.29 0.40
Total 0.35 0.65 1.00

Select the true statement.

A. A smaller percentage of children (43%) prefer pizza.
B. A smaller percentage of children (30%) prefer pizza.
C. A greater percentage of children (about 70%) prefer pizza.
D. A greater percentage of children (64%) prefer pizza.

Answers

The 60% of adults who like pizza was found by dividing the adults who like pizza ( 0.36) by the total adults ( 0.60): 0.36 / 0.6 = 0.6 = 60%

To find the percent of children that like pizza divide 0.29 by 0.40:

0.29 / 0.40 = 0.725 = 72.5%, which is about 70%

The answer would be C. A greater percentage of children (about 70%) prefer pizza.

The percentage of children that prefer pizza are about 70%, which is Option(c) .

What is percentage?

A relative figure reflecting hundredth parts of any quantity is called a percentage.

How to calculate percentage?Determine the total amount of quantity.Find the amount of which you want to find percentage.Divide them both and multiply by 100

Children who like pizza = 0.29

Total No. of children = 0.40

Percentage of children who like pizza = (0.29 / 0.40) * 100

Percentage = 72.5% (about 70%)

The percentage of children who like pizza are about 70%(Option - c)

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Please help!! If you really love math!! 50 POINTS!!!!!!

Examine this system of equations. Which numbers can be multiplied by each equation so that when the two equations are added together, the x term is eliminated?

1/5x + 3/4y = 9

2/3x - 5/6y = 8
A: –10 times the first equation and 3 times the second equation
B: 10 times the first equation and 3 times the second equation
C: –3 times the first equation and 5 times the second equation
D: 3 times the first equation and 5 times the second equation



The multipliers of this system of equations have been determined to create opposite terms of the x-variable.

12(-1/6x - 2/3y = -5 )--------> -2x-8y=-60
5(2/5x + 1/5y = -9)----------> 2x+y=-45
What is the value of y?
A: –30
B:–15
C: 15
D: 30



Examine the system of equations. Which is an equivalent form of the first equation that when added to the second equation eliminates the y terms?

-5x + 3/4y = 12
8x + 12y = 11

A: 10x – 12y = –192
B:–10x + 12y = 192
C: 5x – 12y = 96
D: –5x + 12y = 96

Answers

Answer:

A: –10 times the first equation and 3 times the second equationC: 15none of the choices shown. Should be 80x -12y = -192

Step-by-step explanation:

1. The multiplier for the first equation can be found by the ratio ...

  -(second equation x-coefficient)/(first equation x-coefficient)

  = (-2/3)/(1/5) = -10/3

This tells you that multiplying the first equation by -10 and the second equation by 3 will make the x-terms cancel. Matches selection A.

__

2. Adding the two equations shown gives ...

  (-2x -8y) +(2x +y) = (-60) +(-45)

  -7y = -105

  y = -105/-7 = 15 . . . . matches selection C.

__

3. Using the rule shown in question 1, the multiplier for the first equation will be ...

  -(second equation y-coefficient)/(first equation y-coefficient)

  -12/(3/4) = -16

Multiplying the first equation by -16 gives ...

  -16(-5x +3/4y) = -16(12)

  80x -12y = -192 . . . . no matching answer choice

(Sometimes, the problems have errors in their answers. This is one of those times. Choice A will probably be graded as correct, even though it is not.)

ΔABC is a right triangle in which ∠B is a right angle, AB = 1, AC = 2, and BC = sqrt(3).

cos C × sin A =

I think the answer is 3/4, because cos(c) = adj / hypot and sin(a) = opposite / hypot

cos(c) = sqrt(3) / 2
sin(a) = sqrt(3) / 2
which is 3/4 when multiplied.

Answers

Answer:

[tex]\frac{3}{4}[/tex]

Step-by-step explanation:

cosC = cos30° = [tex]\frac{adjacent}{hypotenuse}[/tex] = [tex]\frac{BC}{AC}[/tex] = [tex]\frac{\sqrt{3} }{2}[/tex]

sinA = sin60° = cos30° = [tex]\frac{\sqrt{3} }{2}[/tex]

Hence

cosC × sinA = [tex]\frac{\sqrt{3} }{2}[/tex]  × [tex]\frac{\sqrt{3} }{2}[/tex] = [tex]\frac{3}{4}[/tex]

Answer:

[tex]\frac{3}{4}[/tex]

Step-by-step explanation:

Since,

[tex]\sin \theta=\frac{Opposite leg of }\theta}{\text{Hypotenuse}}[/tex]

[tex]\cos \theta=\frac{Adjacent leg of }\theta}{\text{Hypotenuse}}[/tex]

Given,

In triangle ABC,

AB = 1 unit, AC = 2 unit, and BC = √3 unit

Thus, by the above formule,

[tex]\cos C = \frac{\sqrt{3}}{2}[/tex]

[tex]\sin A=\frac{\sqrt{3}}{2}[/tex]

[tex]\implies \cos C\times \sin A =  \frac{\sqrt{3}}{2}\times \frac{\sqrt{3}}{2}= \frac{3}{4}[/tex]

Solve sin θ+1= cos2θ on the interval 0≤ θ<2 pi.
Show work

Answers

Answer:

[tex]\theta \in \{0,\pi,\frac{7\pi}{6},\frac{11\pi}{6}\}[/tex]

Step-by-step explanation:

[tex]\sin(\theta)+1=\cos(2\theta)[/tex]

Applying double angle identity:

[tex]\cos(2\theta)=1-2\sin^2(\theta)[/tex]

Doing so would give:

[tex]\sin(\theta)+1=1-2\sin^2(\theta)[/tex]

We need to get everything to one side so we have 0 on one side.

Subtract 1 on both sides:

[tex]\sin(\theta)=-2\sin^2(\theta)[/tex]

Add [tex]2\sin^2(theta)[/tex] on both sides:

[tex]\sin(\theta)+2\sin^2(\theta)=0[/tex]

Let's factor the left-hand side.

The two terms on the left-hand side have a common factor of [tex]\sin(\theta)[/tex].

[tex]\sin(\theta)[1+2\sin(\theta)]=0[/tex].

This implies we have:

[tex]\sin(\theta)=0 \text{ or } 1+2\sin(\theta)=0[/tex].

We need to solve both equations.

You are asking they be solved in the interval [tex][0,2\pi)[/tex].

[tex]\sin(\theta)=0[/tex]

This means look at your unit circle and find when you have your y-coordinates is 0.

You this at 0 and [tex]\pi[/tex]. (I didn't include [tex]2\pi[/tex] because you don't have a equal sign at the endpoint of [tex]2\pi[/tex].

Now let's solve [tex]1+2\sin(\theta)=0[/tex]

Subtract 1 on both sides:

[tex]2\sin(\theta)=-1[/tex]

Divide both sides by 2:

[tex]\sin(\theta)=\frac{-1}{2}[/tex]

Now we are going to go and look for when the y-coordinates are -1/2.

This happens at [tex]\frac{7\pi}{6}[/tex] and [tex]\frac{11\pi}{6}[/tex].

The solution set given the restrictions is

[tex]\theta \in \{0,\pi,\frac{7\pi}{6},\frac{11\pi}{6}\}[/tex]

The length of each side of a square increases by 2.5 inches to form a new square with a perimeter of 70 inches. The length of each side of the original square was inches.

Answers

Check the picture below.

Answer:

15

Step-by-step explanation:

70 = 4 x (a + 2.5)

70 = 4a + 10

70-10 = 4a

60 ÷ 4 = a

15= a

A rancher has 800 feet of fencing to put around a rectangular field and then subdivide the field into 2 identical smaller rectangular plots by placing a fence parallel to one of the field's shorter sides. Find the dimensions that maximize the enclosed area. Write your answers as fractions reduced to lowest terms.

Answers

Answer:

The dimensions of enclosed area are 200 and 400/3 feet

Step-by-step explanation:

* Lets explain how to solve the problem

- There are 800 feet of fencing

- We will but it around a rectangular field

- We will divided the field into 2 identical smaller rectangular plots

 by placing a fence parallel to one of the field's shorter sides

- Assume that the long side of the rectangular field is a and the

 shorter side is b

∵ The length of the fence is the perimeter of the field

∵ We will fence 2 longer sides and 3 shorter sides

∴ 2a + 3b = 800

- Lets find b in terms of a

∵ 2a + 3b = 800 ⇒ subtract 2a from both sides

∴ 3b = 800 - 2a ⇒ divide both sides by 3

∴ [tex]b=\frac{800}{3}-\frac{2a}{3}[/tex] ⇒ (1)

- Lets find the area of the field

∵ The area of the rectangle = length × width

∴ A = a × b

∴ [tex]A=(a).(\frac{800}{3}-\frac{2a}{3})=\frac{800a}{3}-\frac{2a^{2}}{3}[/tex]

- To find the dimensions of maximum area differentiate the area with

  respect to a and equate it by 0

∴ [tex]\frac{dA}{da}=\frac{800}{3}-\frac{4a}{3}[/tex]

∵ [tex]\frac{dA}{da}=0[/tex]

∴ [tex]\frac{800}{3}-\frac{4}{3}a=0[/tex] ⇒ Add 4/3 a to both sides

∴ [tex]\frac{800}{3}=\frac{4}{3}a[/tex] ⇒ multiply both sides by 3

∴ 800 = 4a ⇒ divide both sides by 4

∴ 200 = a

- Substitute the value of a in equation (1)

∴ [tex]b=\frac{800}{3}-\frac{2}{3}(200)=\frac{800}{3}-\frac{400}{3}=\frac{400}{3}[/tex]

* The dimensions of enclosed area are 200 and 400/3 feet

The mean weight of trucks traveling on a particular section of I-475 is not known. A state highway inspector needs an estimate of the population mean. He selects and weighs a random sample of 49 trucks and finds the mean weight is 15.8 tons. The population standard deviation is 3.8 tons. What is the 95% confidence interval for the population mean?

Answers

Answer:

(14.7 , 16.9)

Step-by-step explanation:

it is given that [tex]\bar{x}=15.8[/tex] tons

σ=3.8 tons

n=49

at 95% confidence level α=1-.95=0.05

[tex]z_\frac{\alpha }{2}=z_\frac{0.05}{2}=z_{0.025}\\[/tex]

=1.96 ( from the standard table)

at 95% confidence level the coefficient interval for μ is

[tex]\bar{x}\pm z_\frac{\alpha }{2}\times \frac{\sigma }{\sqrt{n}}[/tex]

[tex]15.8\pm 1.96\times \frac{3.8}{ \sqrt{49}}[/tex]

[tex]15.8\pm 1.1[/tex]

(14.7, 16.9)

The ages of students in a school are normally distributed with a mean of 16 years and a standard deviation of 1 year. Using the empirical rule, approximately what percent of the students are between 14 and 18 years old?

Answers

Answer:

95% of students are between 14 and 18 years old

Step-by-step explanation:

First we calculate the Z-scores

We know the mean and the standard deviation.

The mean is:

[tex]\mu=16[/tex]

The standard deviation is:

[tex]\sigma=1[/tex]

The z-score formula is:

[tex]Z = \frac{x-\mu}{\sigma}[/tex]

For x=14 the Z-score is:

[tex]Z_{14}=\frac{14-16}{1}=-2[/tex]

For x=18 the Z-score is:

[tex]Z_{18}=\frac{18-16}{1}=2[/tex]

Then we look for the percentage of the data that is between [tex]-2 <Z <2[/tex] deviations from the mean.

According to the empirical rule 95% of the data is less than 2 standard deviations of the mean.  This means that 95% of students are between 14 and 18 years old

What is the end behavior of the graph of the polynomial function f(x)=-x^5+9x-4

Answers

Answer:

Because it's an odd function, the "tails" go off in different directions.  Also, because it's a negative function, the left starts from the upper left and the right goes down into negative infinity.  If it was a positive, the tails would be going in the other directions, meaning that the left would come up from negative infinity and the right would go up into positive infinity.

Step-by-step explanation:

Answer:

C on Edge: As x--> -∞, y-->+∞ and as x-->+∞, y-->-∞

:) Have a good day / night Everyone and stay safe!

Find the value for tan θ given the point (-3, 4) on the terminal side. Leave your answer in fraction form

Find the value for sec θ given the point (-3, 4) on the terminal side. Leave your answer in fraction form.

Answers

Answer:

Step-by-step explanation:

The point (-3, 4) is in QII.  If we plot this point and drop an altitude then connect the point to the origin, we have a right triangle with side opposite measuring 4 units and side adjacent measuring |-3|.  The tangent of the reference angle is the ratio side opposite/side adjacent, so

[tex]tan\theta=-\frac{4}{3}[/tex]

Since secant is the reciprocal of cosine, let's find the cosine of the reference angle and then flip it upside down.  The cosine of the angle is the side adjacent (got it) over the hypotenuse (don't have it).  We can find the hypotenuse using Pythagorean's Theorem:

[tex]c^2=-3^2+4^2[/tex] s0

[tex]c^2=25[/tex] and

c = 5

The cosine of the angle theta is

[tex]cos\theta=-\frac{3}{5}[/tex]; therefore,

[tex]sec\theta=-\frac{5}{3}[/tex]

What is the difference between the GCF and LCM?

Answers

Difference Between GCF and LCM. The Greatest Common Factor (or the GCF) is the greatest real number shared between two integers. ... On the other hand, the Lowest Common Multiple (or LCM) is the integer shared by two numbers that can be divided by both numbers

Answer:

GCF -The greatest real number shared between two integers. On the other hand, the Lowest Common Multiple (or LCM) is the integer shared by two numbers that can be divided by both number.

Step-by-step explanation:

Compare the functions below: Which function has the smallest minimum?
A. F(x)
B. G(x)
C. H(x)
D. All three functions have the same minimum value

Answers

Answer:

D. All three functions have the same minimum value

Step-by-step explanation:

f(x) = -3 sin (x-pi) +2

Sin has a minimum value of -1, but since it is multiplied by a negative, we want its maximum value

sin has a maximum of 1

f (min) = -3(1) +2 = -1

g(x) has a minimum at x =3  

g(minimum) = -1

h(x) = (x+7)^2 -1

        The smallest a squared value can be is zero

     = 0 -1

h(min) =-1

Answer:

D. All three functions have the same minimum value

Step-by-step explanation:

Just did this :)

Find the equation of the line that passes through ( 4 , 1 ) and is parallel to the line passing through ( 7 , 11 ) and ( 10 , 20 ) .

Answers

Answer:

[tex]y-1=3(x-4)[/tex] -----> equation into point slope form

[tex]y=3x-11[/tex]  -----> equation into slope intercept form

[tex]3x-y=11[/tex] -----> equation in standard form

Step-by-step explanation:

we know that

If two lines are parallel, then their slopes are the same

step 1

Find the slope of the line passing through ( 7 , 11 ) and ( 10 , 20 )

The slope m is equal to

[tex]m=(20-11)/(10-7)=3[/tex]

step 2

Find the equation of the line with m=3 that passes through (4,1)

The equation of the line into point slope form is equal to

[tex]y-y1=m(x-x1)[/tex]

substitute

[tex]y-1=3(x-4)[/tex] -----> equation into point slope form

Convert to slope intercept form

[tex]y=mx+b[/tex]

isolate the variable y

[tex]y=3x-12+1[/tex]

[tex]y=3x-11[/tex]  -----> equation into slope intercept form

Convert to standard form

[tex]Ax+By=C[/tex]

[tex]3x-y=11[/tex] -----> equation in standard form

The slope of the given line passing through (7, 11) and (10, 20) is 3. Since parallel lines have equal slopes, the line passing through (4, 1) will also have a slope of 3. Plugging in the slope and point into the slope-intercept form, we find the equation of the line to be y = 3x - 11.

To find the equation of the line that passes through the point (4, 1) and is parallel to another line, we first need to determine the slope of the given line that passes through (7, 11) and (10, 20).

The slope of a line is found by taking the difference in the y-coordinates divided by the difference in the x-coordinates between two points on the line, which is often expressed as Δy/Δx or (y2-y1)/(x2-x1).

The slope of the line passing through (7, 11) and (10, 20) is calculated as follows:
Δy = 20 - 11 = 9

Δx = 10 - 7 = 3

Slope (m) = Δy/Δx = 9/3 = 3

Since parallel lines have the same slope, the line passing through (4, 1) will also have a slope of 3.

The equation of a line in slope-intercept form (y = mx + b) can then be used, where 'm' is the slope and 'b' is the y-intercept.

As we have the slope and a point on the line, we can substitute them into the equation to solve for 'b'.

The equation will look like this:
y = mx + b

1 = 3(4) + b

1 = 12 + b

b = 1 - 12

b = -11

The equation of the line that goes through (4, 1) and is parallel to the line through (7, 11) and (10, 20) is therefore y = 3x - 11.

Identify the area of the figure rounded to the nearest tenth. HELP PLEASE!!

Answers

This is equivalent to an 11x15 rectangle with 2 circles each of radius 2cm cut out of it (4 semi-circles = 2 circles in area).

11x11 rectangle = 165cm^2 area.

2 circles of 2cm radius = 2*4pi = 8pi = 25.13

165 - 25.13 = 139.87 [tex]\approx[/tex] 139.9 [tex]cm^2[/tex] (A)

Answer:

139.9

Step-by-step explanation:

First find the area of the circles.

A = pi*r^2

So pi*2^2

2^2 = 4

4*pi = 12.57

Then divide 12.57 by 2 because its only half a circle.

12.57/2 = 6.285

Then multiply 6.285 by 4 since there are 4 half circles.

6.285*4 = 25.14

Now find the area of the square.

A = lw

A= 15*11

A = 165

Now subtract 165 and 25.14.

165 - 25.14 = 139.86

Now round 139.86 to the nearest tenth

So 139.9

Jake wanted to measure the height of the Great Sphinx of Giza. He placed a mirror on the ground and then walked backwards until he was able to see the top of the statue in the mirror. If his eyes were 5.5 feet above the ground, how tall is the statue, to the nearest foot?

Answers

Answer:

65

Step-by-step explanation:

Final answer:

Jake measured the height of the Great Sphinx of Giza by using a mirror and the Law of Reflection. Doubling the height of the mirror gives us an approximation of the statue's height.

Explanation:

In order to measure the height of the Great Sphinx of Giza, Jake used the concept of the Law of Reflection.

He placed a mirror on the ground and walked backwards until he could see the top of the statue in the mirror.

If his eyes were 5.5 feet above the ground, the mirror's height would be equal to half the height of the statue.

Since Jake's eyes are at a height of 5.5 feet, the distance from the ground to the top of the mirror should also be 5.5 feet.

Therefore, the height of the Great Sphinx of Giza can be calculated by doubling the height of the mirror, which gives us 11 feet.

So, the approximate height of the statue is 11 feet.

A box at a miniature golf course contains contains 4 red golf balls, 8 green golf balls, and 7 yellow golf balls. What is the probability of taking out a golf ball and having it be a red or a yellow golf ball? Express your answer as a percentage and round it to two decimal places.

Answers

Answer:

 =57.89%

Step-by-step explanation:

The total number of golf ball is 4+8+7 = 19

P (red or yellow) = number of red or yellow

                              ------------------------------------

                                total number of golf balls

                           = 4+7

                              -----

                              19

                         =11/19

Changing this to a percent means changing it to a decimal and multiplying by 100%

                        = .578947368 * 100%

                         =57.8947368%

Rounding to two decimal places

                         =57.89%

Final answer:

The probability of drawing a red or yellow golf ball from the box can be calculated by dividing the total number of red and yellow balls (11) by the total number of balls in the box (19), resulting in a probability of 11/19 or approximately 57.89%.

Explanation:

To calculate the probability of drawing a red or yellow golf ball from the box, we first need to figure out the total number of balls in the box. This is found by adding up the number of each color of balls: 4 red balls + 8 green balls + 7 yellow balls = 19 total balls.

Next, we consider the total number of red and yellow balls, which is 4 red + 7 yellow = 11.

To find the probability, we divide the number of desired outcomes (red or yellow balls) by the total number of outcomes (total balls). So, the probability is 11/19.

To express this as a percentage rounded to two decimal places, we can multiply the result by 100, which gives us approximately 57.89%. So, there is a 57.89% chance of drawing a red or yellow ball from the box.

Learn more about Probability here:

https://brainly.com/question/32117953

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A sequence of numbers a1, a2, a3, . . . is defined as follows: a1 = 3, a2 = 5, and every term in the sequence after a2 is the product of all terms in the sequence preceding it, e.g., a3 = (a1)(a2) and a4 = (a1)(a2)(a3). If an = t and n > 2, what is the value of an+2 in terms of t ?
(A) 4t (B) t^2 (C) t^3 (D) t^4 (E) t^8

Answers

Answer:

  (D)  t^4

Step-by-step explanation:

You have defined ...

  a3 = a2·a1

  a4 = a3·(a2·a1) = a3²

  a5 = a4·(a3·a2·a1) = a4² = (a3²)² = a3⁴

Then if a3 = t, a5 = t⁴

Let's begin by understanding the given sequence and the pattern it follows.
We are given the initial terms:
a1 = 3
a2 = 5
For n > 2, the next term is defined as the product of all preceding terms. Therefore,
a3 = a1 * a2
a4 = a1 * a2 * a3
and so on.
Now, let's generalize this for any term an where n > 2. According to the problem, an = t.
The term immediately after an would be an+1, which equals the product of all preceding terms:
an+1 = a1 * a2 * a3 * ... * an-1 * an
Since an = t, and every term before it has been multiplied to give t (by definition of the sequence), we have:
an+1 = t * t
an+1 = t^2
Now, let's find an+2. This term is the product of all preceding terms, which now includes an+1:
an+2 = a1 * a2 * a3 * ... * an-1 * an * an+1
From above, we know an = t and an+1 = t^2. Hence:
an+2 = t * t^2
an+2 = t^3
Therefore, the value of an+2 in terms of t is t^3. The correct answer is (C) t^3.

What is the discontinuity of the function f(x) = the quantity of x squared minus 4 x minus 12, all over x plus 2?

A. (−6, 0)
B. (6, 0)
C. (−2, −8)
D. (2, −4)

Answers

Answer:

  C.  (-2, -8)

Step-by-step explanation:

The function reduces to ...

  f(x) = (x^2 -4x -12)/(x +2) = (x -6)(x +2)/(x +2) = x -6 . . . . x ≠ -2

At x=-2, the function would evaluate to ...

  f(-2) = -2 -6 = -8

but cannot, because there is a hole in the function definition at that point.

There is a hole at (-2, -8).

Graph the parametric equation x = 2t y = t + 5, -2 ≤ t ≤ 3

Answers

Just fun I'm going to add something above the below.

You can write an equation for this without the parameter.

You have y=t+5 and x=2t.  If you multiply both sides of y=t+5 by 2 you should get 2y=2t+10 and guess what you can replace 2t with x since you have x=2t.  So you can write 2y=x+10 as your equation to represent the parametric version they have here.

This is a linear equation as our graph appears to be below.   Solve for y by dividing both sides by 2 gives you y=x/2  +5.  The slope is 1/2 and the y-intercept is 5.  If t is between -2 and 3 then x is between -4 and 6 since x is doubled t (inclusive here since we have those equal signs along with those inequalities).

So you could have just graph the line y=x/2+5 on the interval [tex]-4 \le x \le 6 [/tex]/

Anyways, I'm also going to look at this without the rewrite:

I'm going to make a table with 4 columns.  The first column is t.  The second is x(t), the third is y(t), and the fourth will be a list of points (x,y) our relation will go through).

t    |     x(t)        |     y(t)           |   (x,y)

------------------------------------------------------

-2       2(-2)=-4      -2+5=3          (-4,3)

-1        2(-1)=-2       -1+5=4           (-2,4)

0        2(0)=0         0+5=5           (0,5)

1         2(1)=2           1+5=6           (2,6)

2        2(2)=4          2+5=7          (4,7)

3        2(3)=6          3+5=8           (6,8)

Now I'm going to graph the points in the last column on a coordinate-plane.

The horizontal axis is your x-axis and the vertical axis is your y-axis. I did the x-axis going up or down by two's while the y-axis is going up and down only by one's.

Jemmma has 24 balls. Out of the 24 balls, 12 are yellow, 4 are pink, and the rest are red. What ratio of the number of red balls to the number of balls that are either yellow or pink?

Answers

I don’t know sorry but hope you get the answer

Bina kept a list of her expenses and income for one month. If she started the month with no money, how much money did she have left at the end of the month?

Answers

Answer:

Step-by-step explanation:

Income less expenses

Answer:

15

Step-by-step explanation:

i got it right pls mark brainliest

Given: ∠LKM ≅ ∠JKM
∠LMK ≅ ∠JMK

Prove: ∆LKM ≅ ∆JKM

Which method can you use to prove these triangles congruent?

the ASA Postulate


the SAS Postulate


the HL Theorem


the AAS Theorem



Answers

Answer:

ASA

Step-by-step explanation:

Answer: the ASA Postulate

Step-by-step explanation:

In the given picture , we have two triangles ∆LKM and ∆JKM , in which we have

[tex]\angle{LKM}\cong\angle{JKM}\\\\\angle{LMK}\cong\angle{JMK}[/tex]

[tex]\overline{KM}\cong\overline{KM}[/tex] [common]

By using ASA congruence postulate , we have

∆LKM and ∆JKM

ASA  congruence postulate tells that if two angles and the included side of a triangle are congruent to two angles and the included side of other triangle then the triangles are congruent.

Can someone help me with this math question WILL GIVE 20 POINTS. By the way it’s not 51.496

Answers

Below is the formula for the circumference of a circle

C = 2πr

This question gives us the diameter. To find the radius (r) you would divide the diameter by two like so...

16.4/ 2  = 8.2

Plug what you know into the formula and solve...

π = 3.14

r = 8.2

C = 2(3.14)(8.2)

C = 6.28(8.2)

C = 51.496

In the question it asks to round to the nearest tenth like so...

51.5

Hope this helped!

~Just a girl in love with Shawn Mendes

Answer:

Step-by-step explanation:

51.496 rounded to the nearest tenth is 51.5

Which is the correct awnser ?

Answers

Answer:

△ABC ~ △DEF

Step-by-step explanation:

the AA (angle angle) postulate is a postulate that says two triangles can be similar if they have two congruent angles. using this postulate with how each triangle has a 90° angle and ∠F is congruent to ∠C, we can determine that △ABC ~ △DEF.

The correct answer is C. OBC DE because of the definition of similarity in terms of similarity transformations.

A similarity transformation is a transformation that maps a figure onto a similar figure. A similar figure is a figure that has the same shape as the original figure, but may be a different size and orientation.

A rigid transformation is a transformation that maps a figure onto a congruent figure. A congruent figure is a figure that has the same size and shape as the original figure.

Since a series of rigid transformations maps F onto C where F is congruent to C, then the rigid transformations must have preserved the shape and size of F. This means that the rigid transformations must have been similarity transformations.

Therefore, the statement "OBC DE because of the definition of similarity in terms of similarity transformations" is true.

For such more question on similarity

https://brainly.com/question/29789257

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