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3 years ago

Can anyone please help me ASAP?I have included a picture.

Mathematics

2 answers:

Sedaia [141]3 years ago

7 0

Answer:

see explanation

Step-by-step explanation:

The formula for v is

v = $\frac{s}{t}$

When t = 3 and s = 180 , then

v = $\frac{180}{3}$ = 60 mph

Nonamiya [84]3 years ago

6 0

Answer:

$Formula\: v =\frac{s}{t} \\\\v = 60\: mph$

Step-by-step explanation:

Formula:

$v = \frac{s}{t} \: mph \\ \\ when \: t = 3 \: and \: s = 180 \\ \\ v = \frac{180}{3} \\ \\ v = 60 \: mph$

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Two college roommates have each committed to donating to charity each week for the next year. The roommates’ weekly incomes are

schepotkina [342]

Answer:

C. 5 weeks.

Step-by-step explanation:

In this question we have a random variable that is equal to the sum of two normal-distributed random variables.

If we have two random variables X and Y, both normally distributed, the sum will have this properties:

$S=X+Y\\\\\ \mu_S=\mu_X+\mu_Y=30+60=90\\\\\sigma_S=\sqrt{\sigma_X^2+\sigma_Y^2}=\sqrt{10^2+20^2}=\sqrt{100+400}=\sqrt{500}=22.36$

To calculate the expected weeks that the donation exceeds $120, first we can calculate the probability of S>120:

$z=\frac{S-\mu_S}{\sigma_S} =\frac{120-90}{22.36}=\frac{30}{22.36}=1.34\\\\P(S>120)=P(z>1.34)=0.09012$

The expected weeks can be calculated as the product of the number of weeks in the year (52) and this probability:

$E=\#weeks*P(S>120)=52*0.09012=4.68$

The nearest answer is C. 5 weeks.

6 0

3 years ago

Find the area of the shape . ( exact answer )

tangare [24]

Answer:

84.78

Step-by-step explanation:

A=π r²

6*6(r²)=36

36*3.14(π)=113.04

113.04*3/4(it is 3/4 of a circle)=339.12/4

339.12/4=84.78

7 0

4 years ago

I don't understand the bottom questions. Please help, it's due for tomorrow!

Elena-2011 [213]

I am giving the answers only.

2/5

4/7

5/11

1/5

2/3

3/5

2/15

1/2

3 0

3 years ago

Walter has 124 bills consisting of 5 dollar bills and 10 dollar bills. If his total amount of money is $840, how many bills of e

Romashka [77]

For this question here are the formulas,
Let T be the number of 10's
Let F be the number 5's

Let us find the 10's first by this formula.
5(124 - T) + 10T = 840
620-5T + 10T = 840
then
5T = 220
5 5

T=44
Now let's find the F using this formula.

5F + 10T = 840
Sustitute T
5F + 10(44) = 840
5F = 400
5 5
F = 80

to Check
F + T = 124
80 + 44 = 124

8 0

3 years ago

I will mark you brainliest!!! Identify the type of function.

Ymorist [56]

Answer:

quadratic

Step-by-step explanation:

8 0

3 years ago

Read 2 more answers