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3 years ago

9

Problem page rita drive 420 miles using 18 gallons of gas. at this rate, how many gallons of gas would she need to drive 357 mil

es

1 answer:

bulgar [2K]3 years ago

3 0

The answer is 8,330
because you have to take 420 and divied it by 18 and youll get 23.33333 then you times it to 357

hope you are satisfied

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PLEASE HELP<br><br> Solve.<br><br> m^-5 = 1/32<br><br> m = ________ ?

4vir4ik [10]

$a^{-n}=\frac{1}{a^n}\\\\m^{-5}=\frac{1}{32}\iff m^5=\frac{1}{\frac{1}{32}}\to m^5=32\iff m=\sqrt[5]{32}\to m=2\\\\because\ 2^5=32\\\\Answer:\boxed{m=2}$

3 0

3 years ago

An experiment involves selecting a random sample of 256 middle managers at random for study. one item of interest is their mean

Nitella [24]

The standard error of the mean is 128.125.

The formula for standard error is:

$\sigma_M=\frac{\sigma}{\sqrt{N}}$

With our information, we have:

$\sigma_M=\frac{2050}{\sqrt{256}}=128.125.$

7 0

3 years ago

For every 5 boys, there are 3 girls. If there are 60 students how many boys are there?

adell [148]

Answer:

not solvable

Step-by-step explanation:

so there is a ratio of 5:3

that equals 8 parts

if you divide 60 by 8 that's 7.5

times 7.5 by 5 and you get 37.5

don't know how u get half a person but that's just how it is

8 0

3 years ago

Angelo rode his bike around a bike trail that was 1/4 of a mile long. He rode his bike around the trail 8 times. Angelo says he

bulgar [2K]

Teresa is correct because he rode a 1/4 mile bike trail 8 times and if you simplify 8/4 miles it would be 2 miles

7 0

3 years ago

McKenna and Lara work for their uncle Eddie who repairs skateboards and bicycles. Uncle Eddie is leaving for a vacation to the A

natali 33 [55]

Let x be a number of skateboards and y be the number of bicycles in Eddie's repair shop.

Eddie asks the girls to order 54 new wheels for 21 skateboards and bicycles, then

x+y=21.

One scateboard has 4 wheels, then x scateboards have 4x wheels, one bicycle has 2 wheels, then y bicycles have 2y wheels. In total there should be ordered 54 wheels, so

4x+2y=54.

Solve the system of equations:

$\left\{\begin{array}{l}x+y=21\\4x+2y=54.\end{array}\right.$

From the first equation $x=21-y.$ Substitute it into the second equation:

$4(21-y)+2y=54,\\ \\84-4y+2y=54,\\ \\-2y=54-84,\\ \\-2y=-30,\\ \\2y=30,\\ \\y=15.$

Then

$x=21-15=6.$

Answer: 6 scateboards and 15 bicycles.

8 0

2 years ago