2 years ago

My brain hurts trying to solve this. Im pretty sure x = 42 but im not sure about the equation.

Mathematics

2 answers:

SVEN [57.7K]2 years ago

6 0

<h2>Answer:</h2><h2>x+12 = 30</h2><h2>x = 18 students</h2><h2>Step-by-step explanation:</h2>

mart [117]2 years ago

6 0

Answer:

<em> $x + 12 = 30 \\ x = 30 - 12 \\ \timex \\ x = 18$ </em>

<em>1</em><em>8</em><em> </em><em>students</em><em> </em><em />

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Assume that women's heights are normally distributed with a mean given by mu equals 62.3 in, and a standard deviation given by

Salsk061 [2.6K]

Answer: a) 0.6141

b) 0.9772

Step-by-step explanation:

Given : Mean : $\mu= 62.3\text{ in}$

Standard deviation : $\sigma = \text{2.4 in}$

The formula for z -score :

$z=\dfrac{x-\mu}{\dfrac{\sigma}{\sqrt{n}}}$

a) Sample size = 1

For x= 63 in. ,

$z=\dfrac{63-62.3}{\dfrac{2.4}{\sqrt{1}}}=0.29$

The p-value = $P(z$

$0.6140918\approx0.6141$

Thus, the probability is approximately = 0.6141

b) Sample size = 47

For x= 63 ,

$z=\dfrac{63-62.3}{\dfrac{2.4}{\sqrt{47}}}\approx2.0$

The p-value = $P(z$

$=0.9772498\approx0.9772$

Thus , the probability that they have a mean height less than 63 in =0.9772.

8 0

3 years ago

A company charges a $12 fee to make a house call plus an hourly rate for labor. If the total bill for a job that takes 2.5 hours

Ilia_Sergeevich [38]

$95.75 = 12 + 2.5r
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7 0

2 years ago

Which angle number represents <KHI?

tatiyna

Answer:

8,9,11

Step-by-step explanation:

A-1

B-2

C-3

D-4

E-5

F-6

G-7

H-8

I-9

J-10

K-11

L-12

M-13

N-14

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2 years ago

Gavin, Harry and Isabel each earn the same monthly salary. Each month, Gavin saves 28% of his salary and spends the rest of his

Phoenix [80]

Answer:

ok then

Step-by-step explanation:

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2 years ago

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yKpoI14uk [10]

Answer:

it would be C.) no distance was covered

Step-by-step explanation:

because the graph did not move on the y-axis

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3 years ago