1plss help, its time

Answer: 4/6 = 2/32/3 = 2/3

Step-by-step explanation: hope this help

Recall that there are a finite number of shoe sizes, also, the sizes are positive numbers, but not necessarily integers.

Therefore, the function cannot be continuous, it must be discrete.

The function is not restricted to integers.

Answer: Options B and C.

Answer:

4 cm.

Step-by-step explanation:

Area = pi r^2, so:

pi r^2 = 4 / pi

(pi)^2 r^2 = 4

r^2 = 4/ (pi^2)

r = 2/pi

Therefore, the circumference

= 2 pi r

= 2* pi * 2/pi

= 4

The following information regarding a dependent variable (Y) and an independent variable (X) is provided in the following blanks in the image below.

A dependent variable is the variable that changes as a result of the independent variable manipulation. It's the outcome you're interested in measuring, and it “depends” on your independent variable. In statistics, dependent variables are also called: Response variables (they respond to a change in another variable) a) least square estimate of the Y intercept  =2 b)least squares estimate of the slope is =1 c)coefficient of determination is  1-SSE/SST =0.625 d)coefficient of correlation is =(0.625)1/2 =0.7906 e) MSE =SSE/(n-2) =6/(5-2) =2

To learn more independent variable check the link below:

https://brainly.com/question/82796

#SPJ4

Answer:

9.75

Step-by-step explanation:

-25 = -4p + 19

-25 - 19 = -4p

-39 ÷ -4 = p

9.75 = p

Answer:

\(3x^{2} +38x+80\)

Step-by-step explanation:

Hello!

A trinomial is a expression consisting of three different terms

To turn this into a trinomial we multiply everything to each other

                    3x                    

3x * x = \(3x^{2}\)

3x * 10 = 30x

                    8                      

8 * x = 8x

8 * 10 = 80

Now we put them all together in an equation

\(3x^{2} +30x+8x+80\)

Combine like terms

\(3x^{2} +38x+80\)

The answer is \(3x^{2} +38x+80\)

Hope this helps!

To find the combined rate of all the individuals working together, you must add the individual rates.

When calculating the combined rate of individuals working together, you need to add up the individual rates. Each worker contributes their own rate of work or productivity, and by adding these rates together, you can determine the combined rate at which they are working collectively.

This allows you to assess the overall efficiency and output of the team or group. By summing up the individual rates, we have better understanding of the overall productivity and performance of the group.

Read more about individual rates

brainly.com/question/31251379

#SPJ1

Step-by-step explanation:

bear and lion go first and the lion stay there.

then, the bear cross back, stay and let the ape cross alone.

after that the lion get on the boat and pick up the bear.

The union of sets A and B is {1, 2, 3, 4, 5, 6, 7, 8}.

The union of two sets A and B is the set of all elements that are in A, or B, or both. In this case, the elements in set A are {1, 2, 3, 4, 5} and the elements in set B are {5, 6, 7, 8}.

To find the union of these sets, we simply combine all the elements from both sets but remove any duplicates.

Therefore, the answer that shows the union of sets A and B is {1, 2, 3, 4, 5, 6, 7, 8}, since it contains all the elements from both sets without any duplicates.

Learn more about union of sets on:

brainly.com/question/2166579

#SPJ1

Answer:

It is between B and C but what I would choose is C.

The radius, area and circumference of the circle is invariant properties of the circle. Option a, c and d to be chosen.

Properties to be determine that would not change after the rotation of circle.

Circle is locus of the point whose distance from the fixed points i.e. center is fixed.

Here, circle has unit radius and center at origin. If the circle is rotated along the point any where in the space the propertied that would be fixed is its radius, area  and circumference.

Thus, the radius, area and circumference of the circle is invariant properties of the circle.

Learn more about circle here:
https://brainly.com/question/11833983

#SPJ2

Answer:

169 seconds

3rd lap

0.923 minutes

Step-by-step explanation:

To solve this question, we would use formula for arithmetic progression in solving it.

S(n) = a + (n - 1)d

If a = 25 s

n = 10

d = 16

S(n) = 25 + (10 - 1)16

S(n) = 25 + 9 * 16

S(n) = 25 + 144

S(n) = 169

It takes him 169 seconds to cycle his tenth lap

b

If S(n) = 55.4, what is n

55.4 = 25 + (n - 1)16

55.4 - 25 = (n - 1)16

30.4 = (n - 1)16

n - 1 = 30.4/16

n - 1 = 1.9

n = 1.9 + 1

n = 2.9 approximately 3

Therefore, he's on his 3rd lap

c

Total time cycled is dependent on the total cycles he made, and going to question 2, we were told he made 55.4 seconds of cycle

55.4/60 = 0.923 minutes

Answer: B.  |x-100| = 25

Explanation:

Draw out a number line. Mark 75, 100 and 125 on the number line as points A, B, and C in that order. Don't worry about the spacing.

The value of x represents where the train is. So if we had say x = 85, then it would be at location 85 on the number line. Writing |x-100| is the distance from x to 100. The absolute value ensures the distance is never negative. We want this distance to be 25 because after traveling 25 cm, the switch is turned, and the train goes the other way.

The equation which models the movement of the train is represented by |x − 100| = 25. The correct option is B.

One-variable linear equation The equation for a linear equation in one variable is written as ax+b = 0, where a and b are two integers, and x is a variable. This equation has only one solution. For instance, the linear equation 2x+3=8 only has one variable.

The train's location is indicated by the value of x. Therefore, if x were to equal, let's say, 85, it would be at position 85 on the number line.

The distance between x and 100 is expressed as |x-100|. The distance will never be negative thanks to the absolute value. Because the switch is switched after the train has traveled 25 cm in one direction, we need this distance to be 25 cm.

Therefore, the equation which models the movement of the train is represented by |x − 100| = 25. The correct option is B.

To know more about an equation follow

https://brainly.com/question/1640242

#SPJ2

Part A:

Here is the table for the values of y when x = 0, 5, 8, 10, and 30:

x y = -12x + 360

0 360

5 240

8 192

10 180

30 -360

Part B:

After 5 minutes, the altitude of the plane  = 240 feet

After 30 minutes, the altitude of the plane = -360 feet.

To find the value of y for each x, we substitute x into the equation y = -12x + 360:

For x = 0, y = -12(0) + 360 = 360

For x = 5, y = -12(5) + 360 = 240

For x = 8, y = -12(8) + 360 = 192

For x = 10, y = -12(10) + 360 = 180

For x = 30, y = -12(30) + 360 = -360

Part B:

After 5 minutes, the altitude of the plane can be found by substituting x = 5 into the equation

y = -12x + 360

y = -12(5) + 360 = 240 feet

After 30 minutes, the altitude of the plane can be found by substituting x = 30 into the equation

y = -12x + 360

y = -12(30) + 360 = -360 feet.

Learn more about linear functions at:

https://brainly.com/question/2030026

#SPJ1

Answer:

3,051,490 cookies/day

Step-by-step explanation:

Do 610,298 x 5

Answer:3,051,490

Step-by-step explanation:

They make 610,298 of each type of cookie. There are 5 different cookies. So there are 5 groups of 610,298. 610,298×5=3,051,490.

I hope I helped, have an awesome day!! :3

The perimeter of the given shape as represented in the task content is; 29 cm.

It follows from the task content that the perimeter of the given shape on the centimeter grid as required is to be determined.

Since each grid line has 1cm as it's length;

The perimeter of the shape is the sum of all side lengths of the shape;

Perimeter, P = 6+2+3+2+2+1+3+2+2+2+2+1

P = 29 cm

Hence, the perimeter of the shape is; 29 cm.

Read more on perimeter of a shape;

https://brainly.com/question/303508

#SPJ1

Answer:

1.9 m

Step-by-step explanation:

1 ft = 30 cm (approximately)

12 in. = 1 ft

100 cm = 1 m

Find the height in ft:

4 in. / 12 in/ft = 1/3 ft

6 ft 4 in. = 6 ft + 1/3 ft = 6 1/3 ft

Convert ft to cm:

6 1/3 ft × 30 cm/ft = 190 cm

Convert cm to m:

190 cm × 1 m / 100 cm = 1.9 m

Answer:

a. Standard deviation: 4.082

Standard error: 2.041

b. The 95% confidence interval for the actual temperature is (298.5, 311.5).

Upper bound: 311.5

Lower bound: 298.5

c. Test statistic t=2.45

P-value = 0.092

d. There is no enough evidence to claim that the dial of the oven is not properly calibrated. The actual temperature does not significantly differ from 300 °F.

e. If we use a significance level of 10% (a less rigorous test, in which the null hypothesis is rejected with with less requirements), the conclusion changes and now there is enough evidence to claim that the dial is not properly calibrated.

This happens because now the P-value (0.092) is smaller than the significance level (0.10), given statististical evidence for the claim.

Step-by-step explanation:

The mean and standard deviation of the sample are:

\(M=\dfrac{1}{4}\sum_{i=1}^{4}(305+310+300+305)\\\\\\ M=\dfrac{1220}{4}=305\)

\(s=\sqrt{\dfrac{1}{(n-1)}\sum_{i=1}^{4}(x_i-M)^2}\\\\\\s=\sqrt{\dfrac{1}{3}\cdot [(305-(305))^2+(310-(305))^2+(300-(305))^2+(305-(305))^2]}\\\\\\ s=\sqrt{\dfrac{1}{3}\cdot [(0)+(25)+(25)+(0)]}\\\\\\ s=\sqrt{\dfrac{50}{3}}=\sqrt{16.667}\\\\\\s=4.082\)

We have to calculate a 95% confidence interval for the mean.

The population standard deviation is not known, so we have to estimate it from the sample standard deviation and use a t-students distribution to calculate the critical value.

The sample mean is M=305.

The sample size is N=4.

When σ is not known, s divided by the square root of N is used as an estimate of σM (standard error):

\(s_M=\dfrac{s}{\sqrt{N}}=\dfrac{4.082}{\sqrt{4}}=\dfrac{4.082}{2}=2.041\)

The degrees of freedom for this sample size are:

\(df=n-1=4-1=3\)

The t-value for a 95% confidence interval and 3 degrees of freedom is t=3.18.

The margin of error (MOE) can be calculated as:

\(MOE=t\cdot s_M=3.18 \cdot 2.041=6.5\)

Then, the lower and upper bounds of the confidence interval are:

\(LL=M-t \cdot s_M = 305-6.5=298.5\\\\UL=M+t \cdot s_M = 305+6.5=311.5\)

The 95% confidence interval for the actual temperature is (298.5, 311.5).

This is a hypothesis test for the population mean.

The claim is that the actual temperature of the oven when the dial is at 300 °F does not significantly differ from 300 °F.

Then, the null and alternative hypothesis are:

\(H_0: \mu=300\\\\H_a:\mu\neq 300\)

The significance level is 0.05.

The sample has a size n=4.

The sample mean is M=305.

As the standard deviation of the population is not known, we estimate it with the sample standard deviation, that has a value of s=4.028.

The estimated standard error of the mean is computed using the formula:

\(s_M=\dfrac{s}{\sqrt{n}}=\dfrac{4.082}{\sqrt{4}}=2.041\)

Then, we can calculate the t-statistic as:

\(t=\dfrac{M-\mu}{s/\sqrt{n}}=\dfrac{305-300}{2.041}=\dfrac{5}{2.041}=2.45\)

The degrees of freedom for this sample size are:

\(df=n-1=4-1=3\)

This test is a two-tailed test, with 3 degrees of freedom and t=2.45, so the P-value for this test is calculated as (using a t-table):

\(\text{P-value}=2\cdot P(t>2.45)=0.092\)

As the P-value (0.092) is bigger than the significance level (0.05), the effect is not significant.

The null hypothesis failed to be rejected.

There is not enough evidence to support the claim that the actual temperature of the oven when the dial is at 300 °F does not significantly differ from 300 °F.

If the significance level is 10%, the P-value (0.092) is smaller than the significance level (0.1) and the effect is significant.

The null hypothesis is rejected.

There is enough evidence to support the claim that the actual temperature of the oven when the dial is at 300 °C does not significantly differ from 300 °C.

Answer: it went up 25%

Step-by-step explanation: if it would have went up 50%, that would be $20, meaning it would be $60. It is 25% and it is half of 50% and half of $20 is $10 equaling $50

A $40 autographed and framed poster of the Spice Girls goes up in price to $50. What is the percent of increase in the price?

=

25% increase

Answer:

7x+3

Step-by-step explanation:

Hi there!

Let "a number" equal x.

The product is the answer to a multiplication problem. If we're talking about the product of a number and 7, we're talking about multiplying them:

7x

Now, increasing by 3 just means we need to add 3:

7x+3

I hope this helps!

The simplified expression of [(b - 3)/(b² + 2b)] + [b/(4b + 8)] is (b² - 12 + 4b)/[(4b)(b + 2)]

From the question, we have the following parameters that can be used in our computation:

[(b-3)/(b^2+2b)]+[b/(4b+8)]

Rewrite the exponents

[(b - 3)/(b² + 2b)] + [b/(4b + 8)]

So, we have

(b - 3)/(b² + 2b) + b/(4b + 8)

Factor out b and 4

(b - 3)/b(b + 2) + b/4(b + 2)

Factor out 1/(b + 2)

1/(b + 2) * ((b - 3)/b + b/4)

So, we have

1/(b + 2) * (4(b - 3) + b²)/(4b)

This gives

1/(b + 2) * (4b - 12 + b²)/(4b)

Rewrite as

1/(b + 2) * (b² - 12 + 4b)/(4b)

Lastly, we have

(b² - 12 + 4b)/[(4b)(b + 2)]

Hence, the solution is (b² - 12 + 4b)/[(4b)(b + 2)]

Read more about expressions at

https://brainly.com/question/15775046

#SPJ1

Answer:

Question 1 is Wrong because she didn't follow the BODMAS RULE

B-BRACKETS

O-OF

D-DIVIDE

M-MULTIPLY

A-ADD

S-SUBTRACT

THE ANSWER IS

-18

The solution which is incorrect on the given math quiz that Marcella solved is question 1.

Given that:

Marcella solved three questions on a math quiz.

It is required to find the solution which is incorrect among these.

The questions are based on the operations of the integers.

For question 1,

-11 + (-7) = -11 - 7

             = -(11 + 7)

             = -18

So, the solution that Marcella wrote as -4 is incorrect.

For question 2:

29 + (-18) = 29 - 18

               = 11

This solution is correct.

For question 3,

-16 + 35 = 35 - 16

             = 19

This solution is also correct.

Hence, the incorrect solution is that of question 1.

Learn more about Integers here :

https://brainly.com/question/7835047

#SPJ7

Answer:

4) 8:1

Step-by-step explanation:

well on the first perfect point there are 8 cups of raspberry juice and 1 cup of lemon-lime soda and it is comparing them in that order so since 1 is the unit it would be 8:1

Answer:

c is correct answer is yes then please

Answer:

$0.119... per oz, or 0.1

Step-by-step explanation:

$.179 ÷ 15 = 0.119...

Now round to the nearest tenth, and you get 0.1.

Answer:

52mph

Step-by-step explanation:

260/5

Which set of statements is correct?

All images resulting from a dilation are congruent -------> false

If a gure is shrunk, the scale factor must be less than 0. ------> false

If a gure is enlarged, the scale factor must be between 0 and 1 ------> false

ta haure remains the same, the scale factoris 1 ------> correct

All images resulting from a dilation are not congruent, -------> correct

If a gure is shrunk, the scale factor must be less than 1. ------> false

If a beure is shrunk, the scale factor must be between 0 and 1 ------> correct

If a figure is enlarged, the scale factor must be greater than 1​ -----> correct

Answer:

36 more elves

Step-by-step explanation:

90 giants takes up 90/120 = 0.75 of the whole theater, leaving 0.25 empty for the elves.

0.25 * 144 = 36

36 more elves can fit.

Answer:

36 elves

Step-by-step explanation:

Hope this helps

Answer:

y=-1/4x+5/4

Step-by-step explanation:

M is equal to the X in the middle of the equation. B is equal to the Y Intercept. Hope this helps! If you're still having trouble understanding this, I would look up "Slope Intercept Equations" on (Y o u t u b e) and watch a video about it.

Answer:

See graph attached

Step-by-step explanation:

Our life is simple because the equation \(y=2x+2\) is already put in slope-intercept form.

This form is called slope-intercept because it states exactly what it's called: The number multiplied by \(x\) (the constant of proportionality, in this case, 2) is the slope - and the y-intercept is what is being added to the equation (in this case, also 2, since there is a +2 at the end.)

With this info, we can start graphing.

We know that the y-intercept is 2, meaning one point will be (0,2).

We also know that the slope is 2, meaning every time x increases by 1, y will increase by 2. So the next point is (1, 4), the next is (2, 6), and so on.

Hope this helped!

The graph of the function y = 2x + 2 is added as an attachment

From the question, we have the following parameters that can be used in our computation:

y = 2x + 2

The above function is a linear function that has been transformed as follows

Next, we plot the graph using a graphing tool by taking not of the above transformations rules

The graph of the function is added as an attachment

Read more about functions at

brainly.com/question/2456547

#SPJ6