WHAT IS BAC a.50 b.80 c.100 d.130

Can someone please help me with this algebra

kykrilka [37]

Answer:

B

Step-by-step explanation:

Because i did this problem

8 0

3 years ago

The U.S. Energy Information Administration (US EIA) reported that the average price for a gallon of regular gasoline is $3.94 (U

tekilochka [14]

Answer:

a) 25

b) 49

c) 97

Step-by-step explanation:

The sample size is calculated using the formula, n = $(\frac{\sigma\times z}{\textup{Margin of error}})^2$

Now,

for 95% confidence level value of z-factor = 1.96

Given:

Mean = $3.94

standard deviation = $0.25

thus,

a) for margin of error = $0.10

n = $(\frac{\sigma\times z}{\textup{Margin of error}})^2$

or

n = $(\frac{0.25\times1.96}{\textup{0.10}})^2$

or

n = 4.9²

or

n = 24.01 ≈ 25 (Rounded off to next integer)

b) for margin of error = $0.07

n = $(\frac{\sigma\times z}{\textup{Margin of error}})^2$

or

n = $(\frac{0.25\times1.96}{\textup{0.07}})^2$

or

n = 7²

or

n = 49

c) for margin of error = $0.05

n = $(\frac{\sigma\times z}{\textup{Margin of error}})^2$

or

n = $(\frac{0.25\times1.96}{\textup{0.05}})^2$

or

n = 9.8²

or

n = 96.04 ≈ 97 (Rounded off to next integer)

6 0

4 years ago

is the relationship between the side length of a square and the area of the square an example of a function?

vekshin1

Yes. to find the area of a square when you know one side "s", you simply square that side since the area is equal to the base times the height, and the base and height will always be equal in a square since the sides are equal:

A = s^2

Represented in a function form:

f(s) = s^2

This means whatever you plug in for s, you will square it to get the area.

3 0

3 years ago

What is the value of x in the equation -5/8x =-160

Crank

Answer:

256

Step-by-step explanation:

1. Divide both sides by -5/8

-5/8x/-5/8 -160 divided by -5/8

When you do that you get 256

4 0

3 years ago

Find the greatest common factor 24 and 20 24 and 20

Pavel [41]

I believe the answer is 4

6 0

4 years ago