Answer:
60 in
Step-by-step explanation:
BD² = s² + s²
21.21² = 2s²
s² = 224.93205
s = 14.997734829
Perimeter = 4s
= 59.990939316
The scatter plot below shows the relationship between
two variables, x and y. Which line best fits the data?
We will see that the line that best fits the data is the one in the first graph (top left one).
How to know which line best fits the relationship?To know which line is the best one, what we need to do is:
Measure the vertical distance between each point and the line.Add all of these distances.Find the graph such that the sum of these distances is the smallest.I know that it is hard to do it with these graphs, as these are kinda small and the measure may be hard to take, so you can just estimate.
By doing that estimation you can see that (only for the two better graphs, I ignored the bottom two).
The first one has a total distance of near 10 units.
The second one has a total distance of near 11 units.
So the graph that fits best the data is the first one (top left).
If you want to learn more about fitting lines, you can read:
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Begin:
7x + 1 = 22
What’s the answer
Answer:
7x +1 = 22
7x = 21
x = 3
Step-by-step explanation:
6.
Find the x intercepts of the following function:
y = 2x + 3
_______
x +4
Select the appropriate response:
A) −3/9
B) −3/3
C) −3/4
D) −3/2
Answer:
D) -3/2
Step-by-step explanation:
x intercept is when y = 0
(2x + 3)/(x + 4) = 0
2x + 3 = 0
x = -3/2
Shanna writes the formula f(x + 1) = 2.5f(x) when f(1) = 2 to represent this sequence: 2, 5, 12.5, 31.25, … Which error did Shanna make? She used the incorrect common ratio. She used the incorrect initial value. She should have multiplied by f(x) rather then have it as an exponent. She treated the sequence as geometric instead of arithmetic.
Answer:
c
Step-by-step explanation:
Answer:
It is C
Step-by-step explanation:
I took the quiz.
The sum of the measures of the angles of a parallelogram is 360°. In the parallelogram on the right, angles A and D have the same measure as well as angles C and B. If the measure of angle C is twice the measure of angle A, find the measure of each angle.
Answer:
Measure of [tex]\angle A = \angle D =60[/tex] and [tex]\angle B=\angle C=120[/tex] in degrees.
Step-by-step explanation:
Given:
A parallelogram where angles A and D measures same also, C and B measures same.
According to the question:
Measure of angle C is twice the measure of angle A.
Let the measure of angle A be "x" degree.
Accordingly :
Measure of each angle C and B = "2x"
Measure of each angle A and D ="x"
Note:
The sum of the measures of the angles of a parallelogram is 360°.
⇒ [tex]x+x+2x+2x=360[/tex]
⇒ [tex]6x=360[/tex]
⇒ [tex]x=\frac{360}{6}[/tex]
⇒ [tex]x=60[/tex]
So,
Measure of angle A and D be 60 degrees each.
Measure of angle B and C is 120 degrees each.
The measure of angles A and D in the parallelogram is 60° each, while the measure of angles C and B is 120° each.
Explanation:The question is about finding the measure of each angle in a parallelogram. Given that the sum of the angles in a parallelogram is 360° and that the measure of angle C is twice the measure of angle A, we can set up equations to solve the problem.
Let's denote the measure of angle A as 'a'. Since angles A and D are of the same measure, the measure of angle D will also be 'a'. The measure of angle C and B are each twice the measure of angle A, so they will be '2a'.
The sum of the measures of all angles in a parallelogram is 360°, we can write the equation: a + 2a + a + 2a = 360°. Simplifying it you get: 6a = 360°. Solve this equation by dividing both sides by 6, you will get a = 60°.
Therefore, in the parallelogram, the measure of angles A and D is 60°, while the measure of angles C and B is twice as much, namely 120°.
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4.75 as mixed number
Answer:
4[tex]\frac{3}{4}[/tex]
Step-by-step explanation:
Answer:
7 is greater than 5 so round up
4.75 is rounded to 5
Step-by-step explanation:
to round to a place look to the place right after it, to round to the nearest whole number look at the tenth place, right after the decimal place
you see 7
It takes 63 minutes for 4 people to paint 9 walls. How many minutes does it take 7 people to paint 4 walls?
Answer:
16 minutes
Step-by-step explanation:
The number of minutes is expected to be proportional to the number of walls and inversely proportional to the number of minutes. Relative to the effort given, the number of walls is a factor of 4/9, and the number of people is a factor of 7/4. Hence the number of minutes will be ...
(63 min)×(4/9)×1/(7/4) = (63 min)×(16/63) = 16 min
It will take 16 minutes for 7 people to paint 4 walls.
The Greasy Spoon Restaurant offers 6 appetizers and 14
main courses. In how many ways can a person order a
two-course meal?
84
112
20
196
Answer:
84 - if they can only have an appetiser and a main course
Step-by-step explanation:
We have 6 * 14 distinct combinations.
If we could also have 2 appetisers or 2 main courses, that brings us up to 316 combinations ([tex]6*14 + 6^2 + 14^2[/tex]) - this is not an options so we do not need to consider this.
A plane with equation xa+yb+zc=1 (a,b,c>0)together with the positive coordinate planes forms a tetrahedron of volume V=16abcFind the plane that minimizes V if the plane is constrained to pass through a point P=(2,1,1) .
Question not well presented.
See correct question presentation below
A plane with equation (x/a) + (y/b) + (z/c) = 1, where a,b,c > 0 together with the positive coordinate planes form a tetrahedron of volume V = (1/6)abc. Find the plane that minimizes V if the plane is constrained to pass through the point P(2,1,1).
Answer:
The plane is x/6 + y/3 + z/3 = 1
Step-by-step explanation:
Given
Equation: (x/a) + (y/b) + (z/c) = 1 where a,b,c > 0
Minimise, V = (1/6) abc subject to
the constraint g = 2/a + 1/b + 1/c = 1
First, we need to expand V
V = (abc)/6
Possible combinations of V taking 2 constraints at a time; we have
(ab)/6, (ac)/6 and (bc)/6
Applying Lagrange Multipliers on the possible combinations of V, we have:
∇V = λ∇g
This gives
<bc/6, ac/6, ab/6> = λ<-2/a², -1/b², -1/c²>
If we equate components on both sides, we get:
(a²)bc/12 = -λ = a(b²)c/6 = ab(c²)/6
Solving for a, b and c;
First, let's equate:
(a²)bc/12 = a(b²)c/6 -- divide through by abc, we have
a/12 = b/6 --- multiply through by 12
12 * a/12 = 12 * b/6
a = 2 * b
a = 2b
Then, let's equate:
(a²)bc/12 = ab(c²)/6 -- divide through by abc, we have
a/12 = c/6 --- multiply through by 12
12 * a/12 = 12 * c/6
a = 2 * c
a = 2c
Lastly, we equate:
a(b²)c/6 = ab(c²)/6 -- divide through by abc, we have
b/6 = c/6 --- multiply through by 6
6 * b/6 = 6 * c/6
b = 2
Writing these three results, we have
a = 2b; a = 2c and b = c
Recalling the constraints;
g = 2/a + 1/b + 1/c = 1
By substituton, as have
2/(2c) + 1/c + 1/c = 1
1/c + 1/c + 1/c = 1
3/c = 1
c * 1 = 3
c = 3
Since a = 2c;
So, a = 2 * 3
a = 6
Similarly, b = c
So, b = 3
So, the plane: (x/a)+(y/b)+(z/c)=1;
By substituton, we have
x/6 + y/3 + z/3 = 1
Hence, the plane
So the plane is x/6 + y/3 + z/3 = 1
The equation of the plane that minimizes the volume of the tetrahedron and passes through the point (2,1,1) is x + z = 1.
Explanation:To find the plane that minimizes the volume of the tetrahedron, we need to find the equation of the plane that passes through the point P=(2,1,1) and has coefficients a, b, and c. We can substitute the coordinates of the point into the equation of the plane and solve for the a, b, and c.
Substituting the coordinates of P into the equation of the plane gives 2a + b + c = 1. Since a, b, and c are all greater than 0, we can set a = 1, b = 0, and c = 1.
Therefore, the equation of the plane that minimizes the volume of the tetrahedron is x + z = 1.
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A bullet accelerates from a stop to 1000m/s to the East. It accelerates at 10000m/s2 in the same direction. How long did it take for the bullet to reach its final velocity?
Answer:
The bullet reaches its final velocity after 0.1 second.
Step-by-step explanation:
Velocity: The ratio of distance to the time that needs to cover the distance.
Acceleration: The change of velocity per unit time is called the acceleration of the object.
[tex]Acceleration=\frac{\textrm{Final velocity- initial velocity}}{Time}[/tex]
S.I unit is m/s².
C.G.S unit is cm/s².
Dimension: [LT⁻²]
An accelerometer is used to measure acceleration of an object.
Given that
The bullet accelerates from a stop to 1000 m/s to the east.
It accelerates at 10,000 m/s² in the same direction.
The initial velocity of the object is = 0 m/s
The final velocity of the object is = 1000 m/s
[tex]\therefore 10000=\frac{1000-0}{Time}[/tex]
[tex]\rightarrow Time = \frac{1000}{10000}[/tex]
[tex]\rightarrow Time = \frac1{10}[/tex]
[tex]\rightarrow Time = 0.1[/tex]
The bullet reaches its final velocity after 0.1 second.
Bobby wants to determine the most popular snack for the student at his school which question would be the best question to get statistical data?
Answer:
by taking a survey
Step-by-step explanation:
Alex will work on a consulting project for SALT Solutions for 5 days. During these 5 days, the probability that Alex applies for sick leave on a particular day is the same, which is less than 0.5. The probability that Alex applies for his first sick leave on the second day is 0.21. The event that Alex applies for sick leave on a particular day is independent of the event that Alex applies for sick leave on other days. What is the probability that Alex applies for his first sick leave on the fifth day
Final answer:
The probability that Alex applies for his first sick leave on the fifth day is approximately 0.049, assuming that the likelihood of taking a sick day is consistent and independent across all days.
Explanation:
The probability that Alex applies for his first sick leave on the fifth day can be determined using the information given about the second day and the independent nature of the sick leave events. Since the probability of Alex taking his first sick leave on the second day is 0.21, and it is given that the probability of taking a sick day is the same for each day and is independent, we can infer that the probability of not taking a sick leave on any given day is 1 - 0.21 = 0.79. Therefore, for Alex to take his first sick leave on the fifth day, he must not take sick leave on the first four days and then take leave on the fifth, so the probability is calculated as:
(0.79 x 0.79 x 0.79 x 0.79) x 0.21 ≈ 0.049
Here, (0.79)^4 represents the probability that Alex does not take sick leave for the first four days, and 0.21 represents the probability that he takes his first sick leave on the fifth day.
The probability that Alex applies for his first sick leave on the fifth day is 0.0729.
To find this, we need to follow these steps:
1. The probability that he applies for sick leave for the first time on the second day is 0.21. This means he must have been at work on the first day and then applied for sick leave on the second day. Since the events are independent, the probability that he does not apply for sick leave on any day is [tex]\(1 - P(\text{sick leave})\)[/tex]. Therefore, we have [tex]\( P(\text{work on first day}) \times P(\text{sick leave on second day}) = 0.21 \)[/tex].
2. Let ( p ) be the probability that Alex applies for sick leave on a given day. We then have [tex]\( (1-p) \times p = 0.21 \)[/tex].
3. To solve for ( p ), we can find the square root of 0.21, since [tex]\( p^2 = 0.21 \) if \( p = 1-p \)[/tex], which is true when [tex]\( p < 0.5 \)[/tex].
4. The probability that Alex applies for his first sick leave on the fifth day is [tex]\( (1-p)^4 \times p \)[/tex]. We calculate [tex]\( (1-p)^4 \)[/tex] using the ( p ) we found from the square root of 0.21 and then multiply by ( p ).
Let's calculate \( p \) and then use it to find the probability for the fifth day.
There seems to be a mistake in the calculation. I incorrectly assumed that the probability of not taking a sick leave (\(1 - p\)) squared would be equal to the probability of taking the first sick leave on the second day, which isn't necessarily true given that \( p \) is less than 0.5 but not necessarily \( p = 1 - p \).
Let's go through the calculations again step by step:
1. Let ( p ) be the probability that Alex applies for sick leave on a given day. The probability that he does not apply for sick leave on any day is therefore(1 - p).
2. Since the events are independent, the probability that Alex applies for his first sick leave on the second day (having worked on the first day) is the product of the probability that he did not take a sick leave on the first day and the probability that he did take a sick leave on the second day, which can be represented as ( (1 - p) times p ).
3. Given that the probability for the second day is 0.21, we can set up the equation ( (1 - p) times p = 0.21 \) and solve for( p ).
4. Using the value of ( p ) found from the equation, we can then calculate the probability that Alex applies for his first sick leave on the fifth day, which would be [tex]\( (1 - p)^4 \times p \).[/tex]
( p ) from the equation and then determine the probability for the fifth day.
The probability that Alex applies for his first sick leave on the fifth day is exactly [tex]\( 0.07203 \)[/tex]. This was calculated by first determining the daily probability of taking sick leave, which is [tex]\( 0.3 \)[/tex], and then using it to calculate the probability of not taking a sick leave for the first four days and then taking one on the fifth day.
Write an inequality for the graph. Write your answer with y by itself on the left side of the inequality.
Answer:
Y < -1/4x + 2
Step-by-step explanation:
When Hailey commutes to work, the amount of time it takes her to arrive is normally distributed with a mean of 21 minutes and a standard deviation of 3.5 minutes. Out of the 211 days that Hailey commutes to work per year, how many times would her commute be between 19 and 26 minutes, to the nearest whole number?
Answer: 135 days
Step-by-step explanation:
Since the amount of time it takes her to arrive is normally distributed, then according to the central limit theorem,
z = (x - µ)/σ
Where
x = sample mean
µ = population mean
σ = standard deviation
From the information given,
µ = 21 minutes
σ = 3.5 minutes
the probability that her commute would be between 19 and 26 minutes is expressed as
P(19 ≤ x ≤ 26)
For (19 ≤ x),
z = (19 - 21)/3.5 = - 0.57
Looking at the normal distribution table, the probability corresponding to the z score is 0.28
For (x ≤ 26),
z = (26 - 21)/3.5 = 1.43
Looking at the normal distribution table, the probability corresponding to the z score is 0.92
Therefore,
P(19 ≤ x ≤ 26) = 0.92 - 28 = 0.64
The number of times that her commute would be between 19 and 26 minutes is
0.64 × 211 = 135 days
Answer:
135
Step-by-step explanation:
If the probability of rain is 31%. What is the probability of it not raining?
Answer:
69%
Step-by-step explanation:
Since we only have two options, rain or not rain, they have to add to 100%
100 -31 = 69
So not raining is 69%
Answer:
69%
Step-by-step explanation:
GET THIS RIGHT AND YOU'LL GET (100) POINTS
Answer:
10 13 3 12 2
Step-by-step explanation:
there is no true pattern, the numbers written out in letters are listed alphabetically in order
slope intercept form $500 and $25
Answer:
y=25x-500
Step-by-step explanation:
25 is positive with the x because its the slope and 500 is the cost so you subtract is. 500 is the y intercept
Solve logx = 6.4 by changing it to exponential form.
a. X= 6.4
b. X= 6.4^10
c. X=-64
d. x= 10^6.4
answer is D
Answer:
d. x= 10^6.4
Step-by-step explanation:
[tex] log_{10}(x) = 6.4 \\ x = {10}^{6.4} \\ [/tex]
A random sample of 240 adults over the age of 40 found that 144 would use an online dating service. Another random sample of 234 adults age 40 and under showed that 131 would use an online dating service. Assuming all conditions are met, which of the following is the standard error for a 90 percent confidence interval to estimate the difference between the population proportions of adults within each age group who would use an online dating service?A) 1.44240 B) 1.65144240 C) 1.96144240 D) 2.75474 E) 1.65275474
The options at the end of the question are not typed properly, the correct options are given below.
A. √[144/240(1−144/240)/240] + [131/234(1−131/234)/234]
B. 1.65√[144/240(1−144/240)/240] + [131/234(1−131/234)/234]
C. 1.96√[144/240(1−144/240)/240] + [131/234(1−131/234)/234]
D. √[275/474(1−275/474)/474] + [275/474(1−275/474)/474]
E. 1.65√[275/474(1−275/474)/474] + [275/474(1−275/474)/474]
Given Information:
Confidence interval = 90%
Sample size of adults over the age of 40 = n₁ = 240
Sample size of adults under the age of 40 = n₂ = 234
Number of adults over the age of 40 who would use an online dating service = 144
Number of adults under the age of 40 who would use an online dating service = 131
Required Information:
standard error = ?
Answer:
standard error = 0.075
Step-by-step explanation:
The population proportion of adults over the age of 40 who would use an online dating service is,
p₁ = 144/240
p₁ = 0.6
The population proportion of adults under the age of 40 who would use an online dating service is,
p₂ = 131/234
p₂ = 0.56
The Standard Error is given by
SE = z*√(p₁(1 - p₁)/n₁ + p₂(1 - p₂)/n₂)
Where z is the corresponding z-score value for the 90% confidence level that is 1.65
SE = 1.65*√(0.6(1 - 0.6)/240 + 0.56(1 - 0.56)/234)
This is the equation corresponding to the correct option B given in the question.
SE = 1.65*0.0453
SE = 0.075
Therefore, 0.075 is the standard error for 90% confidence interval to estimate the difference between the population proportions of adults within each age group who would use an online dating service.
0.075 is the standard error for 90% confidence interval to estimate the difference between the population proportions of adults within each age group who would use an online dating service.
Given that,
Confidence interval = 90%
Sample size of adults over the age of 40 = n₁ = 240
Sample size of adults under the age of 40 = n₂ = 234
Number of adults over the age of 40 who would use an online dating service = 144
Number of adults under the age of 40 who would use an online dating service = 131
We have to determine,
The standard error for a 90 percent confidence interval to estimate the difference between the population proportions of adults within each age group who would use an online dating service.
According to the question,
The population proportion of adults over the age of 40 who would use an online dating service is;
[tex]P_1 = \dfrac{140}{244} = 0.6[/tex]
The population proportion of adults under the age of 40 who would use an online dating service is,
[tex]P_2 = \dfrac{131}{234} = 0.56[/tex]
Therefore, The Standard Error is given by,
[tex]Standard\ error = z \times \sqrt{\dfrac{p_1(1-p_1)}{n_1} + \dfrac{p_2 (1-p_2)}{n_2} } \\\\[/tex]
Putting all the values in the given formula,
[tex]= 1.65 \times \sqrt{\dfrac{0.16(1-0.16)}{240} + \dfrac{0.56(1-0.56)}{234} } \\\\\\= 1.65 \times \sqrt{\dfrac{0.16(0.84)}{240} + \dfrac{0.56 (0.44)}{234} } \\\\\\= 1.65 \times \sqrt{0.00056+0.0010}\\\\= 1.65 \times 0.0453\\\\= 0.075[/tex]
Hence, 0.075 is the standard error for 90% confidence interval to estimate the difference between the population proportions of adults within each age group who would use an online dating service.
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A cylinder fits inside a square prism as shown. For every cross section, the ratio of the area of the circle to the area of the square is StartFraction pi r squared Over 4 r squared EndFraction or StartFraction pi Over 4 EndFraction. A cylinder is inside of a square prism. The height of the cylinder is h and the radius is r. The base length of the pyramid is 2 r. Since the area of the circle is StartFraction pi Over 4 EndFraction the area of the square, the volume of the cylinder equals
Answer:
[tex]\pi r^2 h[/tex]
Step-by-step explanation:
[tex]\text{Area of the circle: Area of the Square =}\dfrac{\pi r^2}{4r^2}:1=\dfrac{\pi}{4}:1[/tex]
Height of the cylinder =h
Radius of the Cylinder=r
Base Length of the Prism=2r
Therefore:
Volume of the Prism =[tex](2r)^2h=4r^2h[/tex]
[tex]\text{Volume of the Cylinder =} \frac{\pi}{4}(\text{the volume of the prism)}\\=\frac{\pi}{4}(4 r^2 h) \\=\pi r^2 h[/tex]
Answer:
D
Step-by-step explanation:
i took the test
Ressulvanlo p es urgente para hoy
Answer:
The anwer is v
Step-by-step explanation:
Please help will mark Brainliest
Answer:
It i s 6
Step-by-step explanation:
Very six
Which expressions show repeated multiplication? Check all that apply.
☺(1)(9)
☺(1/2) (1/2) (1/2)
☺(7)(7)(7)(7)
☺(2)(3)(4)(5)(6)
☺(9)(9)(9)(9)(9)(9)
Answer:
Step-by-step explanation:
2,3 and 5
Answer:2,3,5
Step-by-step explanation:
Find the area of this parallelogram
Answer:
84cm^2
Step-by-step explanation:
Area of a parallelogram is Base times Height
Area = BxH
plug in
B = 14
H = 6
Following the birth of a child, a parent wants to make an initial investment Upper P 0 that will grow to $70 comma 000 for the child's education at age 17. Interest is compounded continuously at 6%. What should the initial investment be? Such an amount is called the present value of $70 comma 000 due 17 years from now.
The present value, or initial investment, needed to grow to $70,000 for the child's education at age 17 with continuous compounding at 6% is approximately $25,260.21.
To calculate the initial investment, or present value, needed to grow to $70,000 for the child's education at age 17 with continuous compounding at an interest rate of 6%, we can use the formula for continuous compound interest. The formula is:
PV = FV / e^(rt)
Where PV is the present value, FV is the future value, e is Euler's number (approximately 2.71828), r is the interest rate, and t is the time period.
In this case, we have:
FV = $70,000
r = 6% or 0.06
t = 17 years
Using the formula, we can calculate the present value:
PV = 70000 / e^(0.06 * 17)
By plugging in the values into the formula and solving, we find:
PV ≈ 70000 / e^(1.02)
PV ≈ 70000 / 2.7696
PV ≈ 25260.21
Therefore, the initial investment, or present value, required to grow to $70,000 for the child's education at age 17 with continuous compounding at 6% is approximately $25,260.21.
A shopper paid $7.75 for 2.5 pounds of broccoli. What is the unit price (cost per pound) of broccoli
Answer:
$3.1
Step-by-step explanation:
7.75/2.5 = 3.1
Answer:3.1
Step-by-step explanation:
7.75/2.5=3.1
This list gives facts about a library.
Study the list carefully. Then, use the drop-down menu to complete the statement
below about the list.
Width in Feet: 96
Length in Feet: 128
Bookshelves: 39
Computers: 17
Total: 280
make sense to add the items on the list because these quantities
be expressed using the same unit
The number 280
have meaning for the library
The total of 280 makes no sense because it tries to combine unrelated measurements and counts, such as library dimensions with the count of items like bookshelves and computers. Dimensions and counts are separate numerical categories and should be considered independently.
Explanation:The library dimensions, bookshelves, and computers are individual elements that depict various characteristics of the library. The sum provided i.e., 280, cannot portray any sensible information about the library because it mistakenly incorporates unrelated physical dimensions (length and width in feet) with the count of items (bookshelves and computers). This is like adding apples and oranges which, conceptually, makes no sense.
The dimensions of the library, the number of bookshelves, and the number of computers are distinct items that aren't inter-convertible or comparable as they belong to different quantitative categories. They should be considered independently to provide meaningful information about the library.
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What is the approximate length of the diameter, d? *
A) 125ft
B) 80ft
C) 250ft
D) 40ft
Answer:
C) 250 feet
Step-by-step explanation:
Let the diameter of the circle be d feet.
[tex] \therefore \: C = \pi d \\ \therefore \: 250\pi = \pi d \\ d = \frac{250\pi}{\pi} \\ d = 250 \: ft[/tex]
There
to this
equation representing the number of seconds
elapsed between the dolphin exiting and
reentering the water.
Answer:
This is nonlinear.
Step-by-step explanation:
Answer:
There are two real solutions to this equation, representing the number of seconds elapsed between the dolphin exiting and reentering the water.
Step-by-step explanation:
3. Mrs. Prater has 42 flower seeds to plant in flower pots for her front yard. She puts 3
seeds in each pot. Each pot costs $5. What is the total cost of the flower pots?
A. $14
B. $15
C. $70
D. $630
Answer:$70
Step-by-step explanation: if there are 3 seeds in each pot, you start by dividing 42 by 3. This equals 14. This shows how many pots you will need to use up all of the seeds. So to find how much it will cost, you multiply the amount of pots by the cost of each pot. So 14 times 5, which equals 70.