3 years ago

For which of the following situations would a sample be used versus a population? Select all that apply.

Mathematics

1 answer:

muminat3 years ago

8 0

Answer:

Step-by-step explanation:

A biologist is interested in the average wingspan of hawks in the United States.

and

A researcher is interested in the average birth weight of newborn babies born in the United States.

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Natali [406]

B, D, A
No problem make sure to heart my comment Helps

4 0

3 years ago

Find the midpoint of each line segment

devlian [24]

Answer:

( $\frac{7}{2}$ , $\frac{1}{2}$ )

Step-by-step explanation:

For this you use the midpoint formula

$(\frac{x_{2} +x_{1} }{2} ,\frac{y_{2} +y_{1} }{2} )$

the points would be (2,1) and (5,2)

The midpoint would be ( $\frac{7}{2}$ , $\frac{1}{2}$ )

5 0

2 years ago

You will have 27 points if you can help me with this please!!!!

KatRina [158]

Answer:1: P 2: d 3:a

Step-by-step explanation:

5 0

3 years ago

Read 2 more answers

An Internet service provider charges $9.95/month for the first 20 hours and $0.50 for each additional hour. Write an expression

inn [45]

I= 9.95 + .5h

20-35=15
I = 9.95+.5(15)
9.95+7.5
I = 17.45

If you used the internet for 35 hours, your bill would be $17.45

3 0

3 years ago

Read 2 more answers

A ball is thrown directly up in the air from a height of 5 feet with an initial velocity of 60 ft/s. Ignoring air resistance, ho

Mice21 [21]

Answer:

3.8 seconds

Step-by-step explanation:

Given equation

$h= -16t^2 + 60t + 5$

When the ball hits the ground then height is 0

So we replace h with 0 and solve for t

$0= -16t^2 + 60t + 5$

a= -16 , b= 60 and c= 5

Apply quadratic formula to solve for t

$t=\frac{-b\pm \sqrt{b^2-4ac}}{2a}$

= $\frac{-60+\sqrt{60^2-4\left(-16\right)\cdot \:5}}{2\left(-16\right)}[/tex[tex]=\frac{-60+-\sqrt{3920}}{-32}$

$=\frac{-60+-28\sqrt{5}}{-32}$

$=\frac{4(-15+-7\sqrt{5})}{-32}$

$=\frac{(-15+-7\sqrt{5})}{-8}$

Now make two fractions and solve for x

t= $-\frac{7\sqrt{5}-15}{8}$ =-0.0815

t= $\frac{7\sqrt{5}+15}{8}$ =3.83

So answer is 3.8 seconds

4 0

3 years ago