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2 years ago

Could someone help

Mathematics

2 answers:

zhenek [66]2 years ago

7 0

Answer: 3v^2w^2 + 10v^2w^3 (or the first option on the screen)

kondaur [170]2 years ago

6 0

The first one is right 3v^2 w^2 +10v^2 w^3

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The latest poll from ESPN asked fans what their favorite sport was, considering pro, college and highschool levels. Out of 1000

shepuryov [24]

Answer:

Confidence interval is $0.2911$

Step-by-step explanation:

Given that 32% of fans sport is basketball as favorite sport. So total number of fans is,

$32\%\times 1000$

$= \dfrac{32}{100}\times 1000$

$=320$

So 320 fans favorite sport is basket ball.

Now find sample proportion ,

$\widehat{p}=\dfrac{number\:of\:people\:in\:the\:sample}{total\:number\:of\:people}$

Substituting the value,

$\widehat{p}=\dfrac{320}{1000}$

$\widehat{p}=0.320$

Formula for confidence interval is,

$CI=\widehat{p}\pm z\sqrt{\dfrac{\widehat{p}\left (1-\widehat{p}\right )}{n}}$

To calculate the z value.

$Confidence Level=1-\alpha$

$0.95=1-\alpha$

$0.05=\alpha$

Now divide above value by 2,

$\dfrac{0.05}{2}=\dfrac{\alpha}{2}$

$0.025=\dfrac{\alpha}{2}$

To find the value of z score calculate the area under the curve as follows

$A=\dfrac{1+CL}{2}$

$A=\dfrac{1+0.95}{2}$

$A=\dfrac{1.95}{2}$

$A=0.975$

On z table, find the value of 0.975. So the row corresponding to 0.975 is 1.9 and column corresponding to 0.975 is 0.06. Adding these two values the z score is 1.96.

or find the value from excel by using command as follows,

=NORM.S.INV(0.025)= -1.959963985

Now substituting the value,

$CI=0.320\pm 1.96\sqrt{\dfrac{0.320\left (1-0.320\right )}{1000}}$

$CI=0.320\pm 0.02891$

Lower end of the interval is,

$CI=0.320- 0.02891$

$CI=0.2911$

Upper end of the interval is,

$CI=0.320+ 0.02891$

$CI=0.3489$

Therefore 95% confidence interval is $0.2911$

7 0

3 years ago

PLZ HELP ME!!! 18 packages of basil cost $54. How many packages can you buy for $9?

Gnoma [55]

Answer:

Step-by-step explanation:

5 0

2 years ago

Read 2 more answers

A linear function h models a relationship in which the dependent variable decreases 2 units for every 3 units the independent va

ratelena [41]

Answer:

Slope=-2/3, y-intercept=2, x-intercept=3

Step-by-step explanation:

Let the independent variable be x and dependent variable be y

y=h(x)

h is a linear function so it is represented in the general form of y=mx+c where

m is slope and c is the y-intercept.

Given "the dependent variable decreases 2 units for every 3 units the independent variable increases."

When x increases by 3, y decreases by 2

So the slope = rate of change of y / rate of change of x = -2/3

Given h(0)=2, h(0)=m(0)+c=2

c=2

Combining slope and y-intercept, y=-2/3*x+2

x-intercept is when y=0

0=-2/3*x+2

2/3*x=2

x=2*3/2=3

x-intercept=3

6 0

3 years ago

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The expression 2.85+2.70M gives the taxi fare in dollars for a trip of M miles. On Thursday you got a find Miss Hearst took a ta

horrorfan [7]

Answer:

Total fair of the two trips was $32.7

Explanation:

We are given that the expression that taxi fair is:

2.85 + 2.7M where M represents the number of miles

1- For Thursday:

Number of miles covered = M = 6 miles

Substitute with M=6 in the given equation to get the fair on Thursday as follows:

Fair on Thursday = 2.85 + 2.7(6) = $19.05

2- For Friday:

Number of miles covered = M = 4 miles

Substitute with M=4 in the given equation to get the fair on Friday as follows:

Fair on Friday = 2.85 + 2.7(4) = $13.65

3- The total fair:

Total fair = fair on Thursday + fair on Friday

Total fair = 19.05 + 13.65 = $32.7

Hope this helps :)

4 0

3 years ago

PLEASE HELP ILL CASHAPP IF CORRECT

tiny-mole [99]

Answer:

after two months because

40 + 10 + 10 = 60

AND

30 + 15 + 15 = 60

Step-by-step explanation:

5 0

3 years ago

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