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3 years ago

Angle x = angle y =

Mathematics

1 answer:

Bezzdna [24]3 years ago

8 0

X-54
Y- 36

180-126 to find x
And 54+ y= 90

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In a sample of 700 gas stations, the mean price for regular gasoline at the pump was $2.894 per gallon and the standard deviati

frez [133]

Answer:

$P(x < 2.892) = 4.36\%$

Step-by-step explanation:

Given

$N = 700$ --- Population

$\mu = 2.894$ -- Mean

$\sigma = 0.009$ --- Standard deviation

$n = 55$ -- Sample

Required: $P(x < 2.892)$

This question will be solved using the finite correction factor

First, calculated the z score

$z = \frac{x - \mu}{\sqrt{\frac{N -n}{N -1}} * \frac{\sigma}{\sqrt n}}$

$z = \frac{2.892 - 2.894}{\sqrt{\frac{700 -55}{700 -1}} * \frac{0.009}{\sqrt {55}}}$

$z = \frac{-0.002}{\sqrt{\frac{645}{699}} * \frac{0.009}{7.42}}$

$z = \frac{-0.002}{\sqrt{0.92} * \frac{0.009}{7.42}}$

$z = \frac{-0.002}{0.95917 * 0.0012129}$

$z = -1.71$

So:

$P(x < 2.892) = P(z < -1.71)$

Using z table

$P(x < 2.892) = 0.043633$

$P(x < 2.892) = 4.36\%$

3 0

3 years ago

13.ERROR ANALYSIS Describe and correct the error in<br> the student's reasoning.

NNADVOKAT [17]

Answer:

Step-by-step explanation:

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1 year ago

An above ground swimming pool is leaking. After 1/2 hour the pool has leaked 7/8 of a gallon of water. How much gallons of water

miskamm [114]

The pool leaks 7/8 of a gallon in 1/2 hour. Times that by 2 to find out how many gallons per hour. 7/8 x 2 = 14/8 = 1 and 3/4 gal/hour. (1.75 gal/hour)

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3 years ago

Can anyone simplify this? (Apparently using the distributive property.)<br> -3(-5v-u+6)

raketka [301]

I could be wrong however, I'm sure it's: -3x-5= 15v (two negatives become a positive. -3-u becomes 3u. (Two negatives also become a positive), and -3+6 is -3x6= -18. Hence, the answer is: 15v+3u-18.

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4 years ago

Seven less than one-third of a number is 5

miskamm [114]

22 would be the answer. You reverse the equation so you multiply 3 and add 7 5x3 = 15 15+7= 22

3 0

4 years ago

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