9x^2 + 24x + 20 = 4

Solve this by factoring.

Thank you!

9x^2 + 24x + 20 = 4Solve This By Factoring.Thank You!

Answers

Answer 1

Note that,

[tex]9x^2+24x+20=4\Longrightarrow9x^2+24x+16[/tex]

Which factors to,

[tex](3x+4)^2=0\Longrightarrow3x+4=0[/tex]

And simplifies to solution C,

[tex]\boxed{x=-\dfrac{4}{3}}[/tex]

Hope this helps.

Any additional questions please feel free to ask.

r3t40

Answer 2

Answer:

[tex]\large\boxed{C.\ x=-\dfrac{4}{3}}[/tex]

Step-by-step explanation:

[tex]9x^2+24x+20=4\qquad\text{subtract 4 from both sides}\\\\9x^2+12x+12x+16=0\\\\3x(3x+4)+4(3x+4)=0\\\\(3x+4)(3x+4)=0\\\\(3x+4)^2=0\iff3x+4=0\qquad\text{subtract 4 from both sides}\\\\3x=-4\qquad\text{divide both sides by 3}\\\\x=-\dfrac{4}{3}[/tex]


Related Questions

In the figure below, segments YZ and XY are both segments that are tangent to circle E. Segments XY and YZ are congruent.

Answers

Answer:

True

Step-by-step explanation:

Segments drawn to a circle from the same outside point are congruent.

Segments YZ and XY are tangent to circle E draw from outside point Y. The segments are congruent, so the statement is true.

A railing needs to be build with 470.89 metric ton of iron the factory purchased only 0.38 part of required iron . How much iron is needed to complete the railing?

Answers

Answer:

  291.9518 T are required for completion

Step-by-step explanation:

The remaining 0.62 part is ...

  0.62 × 470.89 T = 291.9518 T

Answer:

291.9518 metric Ton

Step-by-step explanation:

Hello

according to the data provided by the problem.

Total Iron needed to build the railing (A)= 470.89 Ton

Total Iron purchased by the factory =0.38 of total

Total Iron purchased by the factory =0.38 *470.89

Total Iron purchased by the factory (B)=178.9382metric Ton

the difference between the total iron needed and the iron supplied by the factory will be the iron we need to get

A-B=iron we need to get(c)

C=A-B

C=470.89-178.9382

C=291.9518 metric Ton

Have a great day.

Choose the inequality that could be used to solve the following problem.
Three times a number is no less than negative six.
3x<-6
3x<-6
3x>-6
3x>-6

Answers

Answer:

  3x ≥ -6

Step-by-step explanation:

"No less than" means "greater than or equal to". An appropriate translation of the problem statement is ...

  3x ≥ -6

Answer:

3x ≥ -6

Step-by-step explanation:

The the inequality that could be used to solve three times a number is no less than negative six is 3x ≥ -6.

HELPPPPP!!!!
An investment in a savings account grows to three times the initial value after t years.
If the rate of interest is 5%, compounded continuously, t = years.

Answers

Answer:

t = 21.97 years

Step-by-step explanation:

The formula for the continuous compounding if given by:

A = p*e^(rt); where A is the amount after compounding, p is the principle, e is the mathematical constant (2.718281), r is the rate of interest, and t is the time in years.

It is given that p = $x, r = 5%, and A = $3x. In this part, t is unknown. Therefore: 3x = x*e^(0.05t). This implies 3 = e^(0.05t). Taking natural logarithm on both sides yields ln(3) = ln(e^(0.05t)). A logarithmic property is that the power of the logarithmic expression can be shifted on the left side of the whole expression, thus multiplying it with the expression. Therefore, ln(3) = 0.05t*ln(e). Since ln(e) = 1, and making t the subject gives t = ln(3)/0.05. This means that t = 21.97 years (rounded to the nearest 2 decimal places)!!!

Answer:

t = 22 years

Step-by-step explanation:

* Lets explain the compound continuous interest

- Compound continuous interest can be calculated using the formula:

  A = P e^rt

# A = the future value of the investment, including interest

# P = the principal investment amount (the initial amount)

# r = the interest rate  

# t = the time the money is invested for

- The formula gives you the future value of an investment,  

  which is compound continuous interest plus the

  principal.  

* Now lets solve the problem

∵ The initial investment amount is P

∵ The future amount after t years is three times the initial value

∴ A = 3P

∵ The rate of interest is 5%

∴ r = 5/100 = 0.05

- Lets use the rule above to find t

∵ A = P e^rt

∴ 3P = P e^(0.05t)

- Divide both sides by P

∴ 3 = e^(0.05t)

- Insert ㏑ for both sides

∴ ㏑(3) = ㏑(e^0.05t)

- Remember ㏑(e^n) = n ㏑(e) and ㏑(e) = 1, then ㏑(e^n) = n

∴ ㏑(3) = 0.05t

- Divide both sides by 0.05

∴ t = ㏑(3)/0.05 = 21.97 ≅ 22

* t = 22 years

In the parabola y = (x + 12 + 2, what is the vertex?

Answers

Answer:

The vertex is the point (-6,-34)

Step-by-step explanation:

we know that

The equation of a vertical parabola into vertex form is equal to

[tex]y=a(x-h)^{2}+k[/tex]

where

(h,k) is the vertex of the parabola

In this problem we have

[tex]y=x^{2}+12x+2[/tex]

Convert in vertex form

Group terms that contain the same variable, and move the constant to the opposite side of the equation

[tex]y-2=x^{2}+12x[/tex]

Complete the square . Remember to balance the equation by adding the same constants to each side.

[tex]y-2+36=x^{2}+12x+36[/tex]

[tex]y+34=x^{2}+12x+36[/tex]

Rewrite as perfect squares

[tex]y+34=(x+6)^{2}[/tex]

[tex]y=(x+6)^{2}-34[/tex]

The vertex is the point (-6,-34)

Two water pumps, working simultaneously at their respective constant rates, took exactly 4 hours to fill a certain swimming pool. If the constant rate of one pump was 1.5 times the constant rate of the other, how many hours would it have taken the faster pump to fill the pool if it had worked alone at its constant rate?

Answers

Answer:  [tex]\dfrac{20}{3}\text{ hours}[/tex]

Step-by-step explanation:

Let x be the speed of slower pump and 1.5x be the speed of faster pump to fill the swimming pool .

Then , According to the given question, we have the following equation:-

[tex]x+1.5x=\dfrac{1}{4}\\\\\rightarrow\ 2.5x=\dfrac{1}{4}\\\\\Rightarrow\ x=\dfrac{1}{10}=[/tex]

Now, the time taken by faster pump to fill the pool is given by :-

[tex]t=\dfrac{1}{1.5x}=\dfrac{10}{1.5}=\dfrac{20}{3}\text{ hours}[/tex]

Hence, the faster pump would take [tex]\dfrac{20}{3}\text{ hours}[/tex]  to fill the pool if it had worked alone at its constant rate.

Solve for x 6^3-x=6^2

Answers

Answer:

D x=1

Step-by-step explanation:

6^(3-x)=6^2

Since the bases are the same, the exponents have to be the same

3-x = 2

Subtract 3 from each side

3-x-3 = 2-3

-x = -1

Multiply each side by -1

x = 1

Answer: Option D

[tex]x=1[/tex]

Step-by-step explanation:

We have the following exponential equation

[tex]6^{3-x}=6^2[/tex]

We must solve the equation for the variable x

Note that the exponential expressions [tex]6^{3-x}[/tex] and [tex]6 ^ 2[/tex] have the same base: 6

So if [tex]6^{3-x}=6^2[/tex] this means that [tex]3-x = 2[/tex]

Then we have that:

[tex]3-x = 2[/tex]

[tex]x = 3-2\\x=1[/tex]

Factor the expression 6g^2+11g-35

Answers

Answer:

(3g-5)(2g+7)

Step-by-step explanation:

Compare

6g^2+11g-35 to

ag^2+bg+c.

We should see that a=6, b=11,c=-35.

It these is factoable over the rationals we should be able to find two numbers that multiply to be ac and add up to be b.

ac=6(-35)

b=11

Now I really don't want to actually find the product of 6(-35). I'm just going to play with the factors until I see a pair that adds up to 11.

6(-35)

30(-7)  Moved a factor of 5 around.

10(-21) Moved a factor of 3 around.

10 and -21 is almost it.  We just need to switch where the negative is because we want a sum of 11 when we add the numbers (not -11).

So b=-10+21 and ac=-10*21.

We are going to replace b in

6g^2+11g-35

with -10+21.

We can do this because 11 is -10+21.

Let's do it.

6g^2+(-10+21)g-35

6g^2+-10g+21g-35

Now we are going to factor the first two terms together and the second two terms together.

Like so:

(6g^2-10g)+(21g-35)

We are going to factor what we can from each pair.

2g(3g-5)+7(3g-5)

There are two terms both of these terms have a common factor of (3g-5) so we can factor it out:

(3g-5)(2g+7)

Write an equation for the problem and then solve.

The area of a triangle is 48 square meters. If the length of the base is 24 meters, what is the height of the triangle?



Answer: height of the triangle = _meters

Answers

Answer:

  4 m

Step-by-step explanation:

Use the formula for the area of a triangle. Fill in the given numbers and solve for the unknown.

  A = (1/2)bh

  48 m² = (1/2)(24 m)h . . . . . put in the given numbers

  (48 m²)/(12 m) = h = 4 m . . . . divide by the coefficient of h

The height of the triangle is 4 meters.

Across a horizontal distance of 25 feet, a roller coaster has a steep drop. The height of the roller coaster at the bottom of the drop is -150 feet, compared to its height at the top of the drop. What is the average amount that the roller coaster's height changes over each horizontal foot?

Answers

Answer:

Hence, the average rate of change in vertical height is:

                               -6

Step-by-step explanation:

We know that the average amount that the roller coaster's height changes over each horizontal foot is basically the slope or the average rate of change of the height of the roller coaster to the horizontal distance.

i.e. it is the ratio of the vertical change i.e. the change in height of the roller coaster to the horizontal change.

Here the vertical change= -150 feet

and horizontal change = 25 feet

Hence,

Average rate of change is:

[tex]=\dfrac{-150}{25}\\\\=-6[/tex]

So, for every change in horizontal distance by 1 feet the vertical height drop by 6 feet.

Answer:

The average amount that the roller coaster's height changes over each horizontal foot is -6.

Further explanation:

The rate of linear function is known as the slope. And the slope can be defined as the ratio of vertical change (change in y) to the horizontal change (change in x).

Mathematically, we can write

[tex]\text{Slope}=\dfrac{\text{change in y}}{\text{change in x}}=\dfrac{\Delta y}{\Delta x}[/tex]

If slope is negative then function is decreasing.If slope is positive then function is increasing.

Now, we have been given that  

Roller coaster has a steep drop at a horizontal distance of 25 feet.

Thus, [tex]\Delta x=25\text{ feet}[/tex]

The height of the roller coaster at the bottom of the drop is -150 feet.

Thus, [tex]\Delta y=-150\text{ feet}[/tex]

Using the above- mentioned formula, the average rate of change is given by

[tex]\text{Average rate of change }=\dfrac{-150}{25}[/tex]

On simplifying the fraction

[tex]\text{Average rate of change }=\dfrac{-6}{1}=-6[/tex]

It means for every 1 foot of horizontal distance, the roller coaster moves down by 6 feet.  

Please refer the attached graph to understand it better.

Therefore, we can conclude that the average amount that the roller coaster's height changes over each horizontal foot is -6.

Learn more:

Average rate of change: https://brainly.com/question/10961592

Finding Average: https://brainly.com/question/9145375

Keywords:

Average rate of change, slope, change of y over change of x, the ratio of two numbers be the same.

For a short time after a wave is created by wind, the height of the wave can be modeled using y = a sin 2πt/T, where a is the amplitude and T is the period of the wave in seconds.

How many times over the first 5 seconds does the graph predict the wave to be 2 feet high?
(SHOW WORK)

Answers

The graph hits [tex]\fbox{\begin\\\ \dfrac{10}{T}+2\\\end{minispace}}[/tex] times over 2 feet for [tex]a>2[/tex].

Further explanation:  

The height of the wave is given by the equation as follows:  

[tex]y=asin\left(\dfrac{2\pi t}{T}\right)[/tex]                          ......(1)

Here, [tex]a[/tex] is amplitude, [tex]T[/tex] is period of wave in second and [tex]t[/tex] time in seconds.  

The height [tex]y[/tex] of the wave is given as 2 feet and time [tex]t[/tex] is given as 5 seconds.  

Substitute 2 for [tex]y[/tex] and 5 for [tex]t[/tex] in equation (1).  

[tex]2=asin\left(\dfrac{2\pi \times5}{T}\right)\\2=asin\left(\dfrac{10\pi}{T}\right)\\\dfrac{2}{a}=sin\left(\dfrac{10\pi}{T}\right)[/tex]

The above eqution is valid only for [tex]a\geq 2[/tex] because the maximum value of the term [tex]sin(10\pi /T)[/tex] is 1.  

If [tex]T[/tex] is the time period then in [tex]T[/tex] seconds the graph will hit at least 2 times over 2 feet for [tex]a>2[/tex].

T seconds[tex]\rightarrow[/tex]2 hits

1 seconds [tex]\rightarrow[/tex] [tex]\dfrac{2}{T}[/tex] hits

5 seconds [tex]\rightarrow\dfrac{2\times5}{T}[/tex]

5 seconds [tex]\rightarrow[/tex] [tex]\dfrac{10}{T}[/tex]

If [tex]T[/tex] is time period in 5 seconds then the graph will hit [tex][10/T][/tex] times in interval 0 to [tex]2\pi[/tex].

Thus, the graph hits [tex]\fbox{\begin\\\ \dfrac{10}{T}+2\\\end{minispace}}[/tex] times over 2 feet for [tex]a>2[/tex].

Learn more:  

1. What is the y-intercept of the quadratic function f(x) = (x – 6)(x – 2)? (0,–6) (0,12) (–8,0) (2,0)  

https://brainly.com/question/1332667  

2. Which is the graph of f(x) = (x – 1)(x + 4)?  

https://brainly.com/question/2334270

 

Answer details:  

Grade: High school.  

Subjects: Mathematics.  

Chapter: function.  

Keywords: Function, wave equation, height, amplitude, equation, period, periodic function, y=asin(2pit/T), frequency, magnitude, feet, height, time period, seconds, inequality, maximum value, range, harmonic motion, oscillation, springs, strings, sonometer.

Please help me ): I don’t know what to do

Answers

Answer:

Question 1: the slope is -6

Question 2: the first choice is the one you want

Step-by-step explanation:

For the first one, I can't tell what fraction is on the left side with the y, but it doesn't matter.  To me it looks like 1/2, but like I said, it won't change or affect our answer regarding the slope.  That number has nothing to do with the slope.  

In order to determine the slope of that line that is currently in point-slope form, we need to change it to slope-intercept form.  Another expression for slope-intercept form is to solve it for y.  Doing that:

[tex]y - \frac{1}{2}=-6x-42[/tex]

Now we can add 1/2 to both sides.  That gives us the slope-intercept form of the line:

[tex]y=-6x- \frac{83}{2}[/tex]

The form is y = mx + b, where the number in the "m" place is the slope.  Our slope is -6.

For the second one, we will sub in the x coordinate in a pair for x in the equation of the line and do the same for y to see if the left side equals the right side.  The answer is [tex](\frac{2}{9},-7)[/tex] and I'll show you why.  I will also show you how another point DOESN'T work in the equation.  Filling in 2/9 for x and -7 for y:

[tex]-7+7=-3( \frac{2}{9} -\frac{2}{9})[/tex] which simplifies to

0 = -3(0) so

0 = 0 and this is true.

The other point I am going to use in exactly the same process is (-3, -7) since it doesn't have fractions in it.  First I'm going to distribute the -3 into the parenthesis to get:

[tex]y+7= -3 x + \frac{6}{9}[/tex]

Subbing in -3 for x and -7 for y:

[tex]-7+7=-3( -3) +\frac{6}{9}[/tex]

As you can see, the left side equals 0 but the right side does not.  If the lft side doesn't equal the right side, then the expression is not true, so the point is not on the line.

can someone please help prove b.,c., and d.? i need help!!!

Answers

Answer:

Proofs are in the explanation.

Step-by-step explanation:

b)  My first thought is to divide top and bottom on the left hand side by [tex]\cos(\alpha)[/tex].

I see this would give me 1 on top and where that sine is, it would give me tangent since sine/cosine=tangent.

Let's do it and see:

[tex]\frac{\cos(\alpha)}{\cos(\alpha)-\sin(\alpha)} \cdot \frac{\frac{1}{\cos(\alpha)}}{\frac{1}{\cos(\alpha)}}[/tex]

[tex]=\frac{\frac{\cos(\alpha)}{\cos(\alpha)}}{\frac{\cos(\alpha)}{\cos(\alpha)}-\frac{\sin(\alpha)}{\cos(\alpha)}}[/tex]

[tex]=\frac{1}{1-\tan(\alpha)}[/tex]

c) My first idea here is to expand the cos(x+y) using the sum identity for cosine.

So let's do that:

[tex]\frac{\cos(x)\cos(y)-\sin(x)\sin(y)}{\cos(x)\sin(y)}[/tex]

Separating the fraction:

[tex]\frac{\cos(x)\cos(y)}{\cos(x)\sin(y)}-\frac{\sin(x)\sin(y)}{\cos(x)\sin(y)}[/tex]

The cos(x) cancel's in the first fraction and the sin(y) cancels in the second fraction:

[tex]\frac{\cos(y)}{\sin(y)}-\frac{\sin(x)}{\cos(x)}[/tex]

[tex]\cot(y)-\tan(x)[/tex]

d) This one makes me think it is definitely essential that we use properties of logarithms.

The left hand side can be condense into one logarithm using the product law:

[tex]\ln|(1+\cos(\theta))(1-\cos(\theta))|[/tex]

We are multiplying conjugates inside that natural log so we only need to multiply the first and the last:

[tex]\ln|1-\cos^2(\theta)|[/tex]

I can rewrite [tex]1-\cos^2(\theta)[/tex] using the Pythagorean Identity:

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

[tex]\ln|\sin^2(\theta)|[/tex]

Now by power rule for logarithms:

[tex]2\ln|\sin(\theta)|[/tex]

Use the diagram to find the measure of the given angle.

Select one:

a. 110

b. 120

c. 130

d. 140

mDAF

Answers

Answer:

  c. 130

Step-by-step explanation:

∠FAB is a vertical angle with the one that is marked, so is 50°. ∠FAE is the complement of that, so is 40°. ∠DAF is the sum of the right angle DAE and angle FAE, so is ...

  90° + 40° = 130° = m∠DAF

Which relation is not a function?
[Control] A. ((6.5).(-6, 5). (5.-6)
[Control] B. ((6,-5). (-6, 5). (5.-6))
[Control] C. ((-6,-5). (6.-5. (5.-6)}
[Control] D. ((-6,5).(-6.-6).(-6.-5))

Answers

Answer:

D.

Step-by-step explanation:

That would be D because there is a repetition of x = -6.

-6 maps to -6, 5 and -5 which is not allowed in a function.

Functions can be one-to-one or many-to-one but not one-to-many.

Identify the equation of the circle Y that passes through (2,6) and has center (3,4).

Answers

Answer:

(x − 3)² + (y − 4)² = 5

Step-by-step explanation:

The equation of a circle is:

(x − h)² + (y − k)² = r²

where (h, k) is the center and r is the radius.

First use the distance formula to find the radius:

d² = (x₂ − x₁)² + (y₂ − y₁)²

r² = (2 − 3)² + (6 − 4)²

r² = 1 + 4

r² = 5

Given that (h, k) = (3, 4):

(x − 3)² + (y − 4)² = 5

Answer:

Step-by-step explanation:

Inserting the coordinates of the center (3, 4) into the standard equation of a circle with center at (h, k) and radius r, we get:

(x - 3)^2 + (y - 4)^2 = r^2

Next, we substitute 2 for x, 6 for y and solve the resulting equation for r^2:

(2 - 3)^2 + (6 - 4)^2 = r^2, or

      1      +       4       =  r^2.

Thus, the radius is √5.  Subbing this result into the equation found above, (x - 3)^2 + (y - 4)^2 = r^2, we get:

(x - 3)^2 + (y - 4)^2 = (√5)^2 = 5, which matches the last of the four possible answer choices.

Jamie and Imani each play softball. Imani has won 5 fewer games than Jamie. Is it possible for Jamie to have won 11 games if the sum of the games Imani and Jamie have won together is 30?
A.) Yes; Jamie could have won 11 games because 2x − 5 = 30.
B.) Yes; Jamie could have won 11 games because 11 − 5 is less than 30.
C.) No; Jamie could not have won 11 games because 2x − 5 ≠ 30.
D.) No; Jamie could not have won 11 games because 2x − 11 ≠ 30.

Answers

Answer: Option C

No; Jamie could not have won 11 games because [tex]2x - 5 \neq 30[/tex]

Step-by-step explanation:

Let's call x the number of games that Jamie has won

Let's call y the number of games that Imani has won

We know that Imani has won 5 more games than Jamie.

Then we can say that:

[tex]y= x - 5[/tex]

We know that the total number of games that Jamie and Imani have won together is 30.

So

[tex]x + y = 30[/tex]

We want to know if it is possible that [tex]x = 11[/tex].

Then we substitute the first equation in the second and get the following:

[tex]x + x - 5 =30\\2x - 5 = 30[/tex]

Now replace [tex]x = 11[/tex] in the equation and check if equality is met.

[tex]2 (11) - 5 = 30\\22 - 5 = 30\\17 \neq 30[/tex]

Equality is not met, then the correct answer is option C

Answer: is c (no Jamie could not have won 11 games because 2x-5=/30

Step-by-step explanation:

A page in a photo album is 10inches wide by 12 inches tall. There is a 1-inch
margin around the page that cannot be used for pictures. The space between each
picture is at least 1/2 - inch. How many 3-inch tall pictures can you fit on the page in
one column? Use a diagram to help you solve the problem
10.

Answers

Answer:

  3

Step-by-step explanation:

The diagram shows the answer: 3 pictures will fit vertically.

You can solve this algebraically as well. For n pictures, there will be n-1 spaces, so the total height of the page must satisfy ...

  1 + 3n + 1/2(n -1) + 1 ≤ 12

  3.5n + 1.5 ≤ 12 . . . . . . . . . . . simplify

  3.5n ≤ 10.5 . . . . . . . . . . . . . .subtract 1.5

  n ≤ 3 . . . . . . . . . . . . . . . . . . . divide by 3.5

Up to 3 pictures will fit in a column.

find the missing angle and side measures of abc, given that A=25, C=90, and CB=16

Answers

Answer:

B = 65°AB = 37.859AC = 34.312

Step-by-step explanation:

The given side is opposite the given acute angle in this right triangle, so the applicable relation is ...

  Sin(25°) = CB/AB

Solving for AB, we get ...

  AB = CB/sin(25°) ≈ 37.859

__

The relation involving the other leg of the triangle is ...

  Tan(25°) = CB/AC

Solving for AC, we get ...

  AC = CB/tan(25°) ≈ 34.312

__

Of course, the missing angle is the complement of angle A, so is 90-25 = 65 degrees.

The formula for the area of a triangle is , where b is the length of the base and h is the height. Find the height of a triangle that has an area of 30 square units and a base measuring 12 units. 3 units 5 units 8 units 9 unitsThe formula for the area of a triangle is , where b is the length of the base and h is the height. Find the height of a triangle that has an area of 30 square units and a base measuring 12 units. 3 units 5 units 8 units 9 units

Answers

Answer: 5 units

Step-by-step explanation:

The formula to find the area of a triangle is given by :-

[tex]\text{Area}=\dfrac{1}{2}\text{ base * height}[/tex]

Given : The area of a triangle = 30 square units

The length of the base of the triangle = 12 units

Let h be the height of the triangle .

Then , we have

[tex]30=\dfrac{1}{2}12\times h\\\\\Rightarrow\ h=\dfrac{30}{6}\\\\\Rightarrow\ h=5\text{ units}[/tex]

Hence, the height of a triangle = 5 units

You have decided to buy a new car, but you are concerned about the value of the car depreciating over time. You do some research on the model you are looking at and obtain the following information: Suggested retail price - $18,790 Depreciation per year - $1385 (It is assumed that this value is constant.) The following table represents the value of the car after n years of ownership.

Answers

Answer:

Option B After 14 years the car is worth $0

Step-by-step explanation:

we have

[tex]V=-1,385n+18,790[/tex]

where

V is the value of the cars

n is the number of years

Determine the n-intercept of the graph

we know that

The n-intercept is the value of n (number of years) when the value of V (value of the car) is equal to 0

so

For V=0

substitute and solve for n

[tex]0=-1,385n+18,790[/tex]

[tex]1,385n=18,790[/tex]

[tex]n=18,790/1,385[/tex]

[tex]n=14\ years[/tex]

That means

After 14 years the car is worth $0

Answer:

B

Step-by-step explanation:

Which description most accurately fits the definition of a combination?



An arrangement of beads on a necklace with a clasp.


An arrangement of objects on a key ring.


A selection or listing of objects in which the order of the objects is important.


A selection or listing of objects in which the order of the objects is not important.

Answers

Answer:

The correct option for the provided problem is D. A selection or listing of objects in which the order of the objects is not important.

Step-by-step explanation:

Consider the provided information.

Selecting all the parts of a set of objects without considering its order in which the objects are selecting is known as combination.

Now consider the provided options:

Options A, B, and C are not valid as the description does not fits accurately.

Thus, the correct option for the provided problem is D. A selection or listing of objects in which the order of the objects is not important.

Answer:

A selection or listing of objects in which the order of the objects is not important

Step-by-step explanation:

Two grandparents want to pick up the mess that their granddaughter had made in her playroom. One can do it in 15 minutes working alone. The​ other, working​ alone, can clean it in 12 minutes. How long will it take them if they work​ together?

Answers

Answer:

  6 2/3 minutes

Step-by-step explanation:

Their rates in "jobs per hour" are ...

  (60 min/h)/(15 min/job) = 4 jobs/h

and

  (60 min/h)/(12 min/job) = 5 jobs/h

So, their combined rate is ...

  (4 jobs/h) + (5 jobs/h) = 9 jobs/h

The time required (in minutes) is ...

  (60 min/h)/(9 jobs/h) = (60/9) min = 6 2/3 min

Working together, it will take them 6 2/3 minutes.

Final answer:

To find out how long it would take the two grandparents to clean the playroom together, we can use the concept of rates and set up an equation. Solving the equation, we find that it would take them 9 minutes to clean the playroom if they work together.

Explanation:

To solve this problem, we can use the concept of rates to find the combined rate at which the two grandparents clean. Let's assign the variable x to represent the time it takes for them to clean together.

The rate at which the first grandparent cleans is 1/15th of the playroom per minute, while the rate at which the second grandparent cleans is 1/12th of the playroom per minute. The combined rate when they work together is the sum of their individual rates, which is given by the equation (1/15)+(1/12)=(1/x).

To solve this equation, we can find a common denominator of 60 to simplify the equation to 4/60+5/60=1/x. Adding the fractions gives us 9/60=1/x. Multiplying both sides of the equation by 60 gives us 9=x. Therefore, it would take the two grandparents 9 minutes to clean the playroom if they work together.

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Square EFGH stretches vertically by a factor of 2.5 to create rectangle E?F?G?H?. The square stretches with respect to the x-axis. If point H is located at (-2, 0), what are the coordinates of H? ?

Answers

Answer with explanation:

Pre-image =Rectangle EFGH

Image = Rectangle E'F'G'H'

Stretch Factor = 2.5

Coordinates of Point H= (-2,0)

If Coordinate of any point is (x,y) and it is stretched by a factor of k , then coordinate of that point after stretching = (k x , k y).

So, Coordinates of Point H' will be=(-2×2.5,0×2.5)

                                      = (-5,0)

Answer: (-5,0)

Step-by-step explanation:

Given : Square EFGH stretches vertically by a factor of 2.5 to create rectangle  E?F?G?H?.

The square stretches with respect to the x-axis such that the point H is located at (-2, 0).

Since , we know that to find the coordinate of image , we multiply the scale factor to the coordinate of pre-image.

Then , the coordinate of H? is given by :-

[tex](-2\times2.5, 0\times2.5)=(-5,0)[/tex]

Find the area of this triangle. Round the sine value to the nearest hundredth. Round the area to the nearest tenth of a centimeter.

Answers

Answer:

  18.8 cm²

Step-by-step explanation:

Sometimes, as here, when the problem is not carefully constructed, the answer you get depends on the method you choose for solving the problem.

Following directions

Using the formula ...

  Area = (1/2)ab·sin(C)

we are given the values of "a" (BC=5.9 cm) and "b" (AC=7.2 cm), but we need to know the value of sin(C). The problem statement tells us to round this value to the nearest hundredth.

  sin(C) = sin(118°) ≈ 0.882948 ≈ 0.88

Putting these values into the formula gives ...

  Area = (1/2)(5.9 cm)(7.2 cm)(0.88) = 18.6912 cm² ≈ 18.7 cm² . . . rounded

You will observe that this answer does not match any offered choice.

__

Rounding only at the End

The preferred method of working these problems is to keep the full precision the calculator offers until the final answer is achieved. Then appropriate rounding is applied. Using this solution method, we get ...

  Area = (1/2)(5.9 cm)(7.2 cm)(0.882948) ≈ 18.7538 cm² ≈ 18.8 cm²

This answer matches the first choice.

__

Using the 3 Side Lengths

Since the figure includes all three side lengths, we can compute a more precise value for angle C, or we can use Heron's formula for the area of the triangle. Each of these methods will give the same result.

From the Law of Cosines, the angle C is ...

  C = arccos((a² +b² -c²)/(2ab)) = arccos(-38.79/84.96) ≈ 117.16585°

Note that this is almost 1 full degree less than the angle shown in the diagram. Then the area is ...

   Area = (1/2)(5.9 cm)(7.2 cm)sin(117.16585°) ≈ 18.8970 cm² ≈ 18.9 cm²

This answer may be the most accurate yet, but does not match any offered choice.

If y varies directly as x and y = 70 when x = 10, find y when x = 36.
252

2,520

25,200

5.14

Answers

Answer:

252

Step-by-step explanation:

y varies directly with x means y=kx where k is a constant.

A constant means it never changes no matter what the point (x,y) they give.

So y=kx means y/x=k (I just divided both sides by x here).

So we have the following proportion to solve:

[tex]\frac{y_1}{x_1}=\frac{y_2}{x_2}[/tex]

[tex]\frac{70}{10}=\frac{y_2}{36}[/tex]

70/10 reduces to 7:

[tex]7=\frac{y_2}{36}[/tex]

Multiply both sides by 36:

[tex]7(36)=y_2[/tex]

Simplify left hand side:

[tex]252=y_2[/tex]

So y is 252 when x is 36.

SOMEONE PLEASE HELP ME FIND THE ANSWER

Answers

Answer:

The measure of arc BC = 124°

Step-by-step explanation:

From the figure we can write,

measure of arc AB + measure of arc BC + measure of arc AC = 360

measure of arc AB   = 146°

measure of arc BC = 90°

Therefore measure arc BC = 360 - (146 + 90)

 = 360 - 236

 = 124°

The measure of arc BC = 124°

Answer: 124 degrees

Step-by-step explanation: There is a 90 degree angle in the top right of the circle. There is a 146 degree angle. Add these two angles.

90 + 146 = 236

These two angles combined are 236 degrees. We are trying to find BC, which is the rest of the circle. There are 360 degrees in a circle. Subtract 360 from 236.

360 - 236 = 124

BC = 124 degrees.

solve and graph each inequality -2y+7<1 or 4y+3<-5​

Answers

Answer:

3 < yy < -2

Step-by-step explanation:

1. -2y+7 < 1

Add 2y-1:

  6 < 2y

Divide by 2:

  3 < y

__

2. 4y +3 < -5

Subtract 3:

  4y < -8

Divide by 4:

  y < -2

_____

These are graphed on the number line with open circles because y=-2 and y=3 are not part of the solution set.

Answer:

y < -2 or y > 3

Step-by-step explanation:

[tex](1)\\\\-2y+7<1\qquad\text{subtract 7 from both sides}\\-2y+7-7<1-7\\-2y<-6\qquad\text{change the signs}\\2y>6\qquad\text{divide both sides by 2}\\\boxed{y>3}\\\\(2)\\\\4y+3<-5\qquad\text{subtract 3 from both sides}\\4y+3-3<-5-3\\4y<-8\qquad\text{divide both sides by 4}\\\boxed{y<-2}\\\\\text{From (1) and (2) we have:}\ y<-2\ or\ y>3[/tex]

[tex]<,\ >-\text{op}\text{en circle}\\\leq,\ \geq-\text{closed circle}[/tex]

MAJORRR HELP !!!!!

Drag the tiles to the correct boxes to complete the pairs. Not all tiles will be used.
Simplify each expression and match it with the equivalent value.

Answers

[tex]\frac{3}{4} = log_{2}(\sqrt[4]{8} )\\-4 = log_{3} \frac{1}{81} \\-6= -3log_{5} 25\\\frac{1}{3} = log_{6} (\sqrt[3]{6} )[/tex]

Here's how you solve it!

[tex]log_{2} \sqrt[4]{8}[/tex]

Write it in exponential form

[tex]log_{2} (2 \frac{3}{4} )[/tex]

Then simplify

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

[tex]log_{3} \frac{1}{81}[/tex]

Write in exponential form

[tex]log_{3} (3^{-4} )[/tex]

Simplify

-4

[tex]-3log_{5} 25[/tex]

Write in exponential form

[tex]-3log_{5} (5^{2} )[/tex]

Simplify

-3 * 2 = -6

-6

[tex]log_{6} \sqrt[3]{6}[/tex]

Write in exponential form

[tex]log_{6} (6\frac{1}{3} )[/tex]

Simplify

[tex]\frac{1}{3}[/tex]

Hope this helps! :3

Final answer:

The problem involves simplifying mathematical expressions, through steps as prescribed by BIDMAS/PEDMAS rules. Start by addressing anything within parentheses, follow through with multiplication or division, and finally handle addition or subtraction.

Explanation:

This question involves the process of mathematical simplification of expressions. To solve this, you will first need to perform any calculations within the parentheses, then handle any multiplication or division from left to right, lastly address any addition or subtraction, also from left to right (also known as the order of operations or BIDMAS/PEDMAS). For example, if you have an expression like '2(3+4)': First, process the operation within the parentheses, in this case, it's a sum so you have '2*7', resulting in '14'. This is considered the simplified version of your expression.

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Marty's Tee Shirt​ & Jacket Company is to produce a new line of jackets with an embroidery of a Great Pyrenees dog on the front. There are fixed costs of $ 680 to set up for​ production, and variable costs of $ 41 per jacket. Write an equation that can be used to determine the total​ cost, C(x), encountered by​ Marty's Company in producing x jackets.

Answers

Answer:

C(x)= 41x + 680

Step-by-step explanation:

If the fixed cost is 680, that will apply regardless of how many jackets the company makes for you. The number of jackets is unknown.  However, we know that the cost of producing a single jacket is 41, so we can represent that expression as 41x.  Putting those things together gives us a function of the cost:

C(x) = 41x + 680

Final answer:

The equation to determine the total cost encountered by Marty's Tee Shirt & Jacket Company in producing x jackets is C(x) = 680 + 41x.

Explanation:

To determine the total cost, C(x), encountered by Marty's Tee Shirt & Jacket Company in producing x jackets, we need to consider both the fixed costs and the variable costs. The fixed costs, which are $680, are incurred regardless of the number of jackets produced. The variable costs, which are $41 per jacket, increase with each additional jacket produced. So the equation to calculate the total cost is:

C(x) = fixed costs + (variable costs per jacket) * x

Substituting the given values, the equation becomes:

C(x) = 680 + 41x

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