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3 years ago

Eight less than the sum of a number and 5 is 12. what is the number?

2 answers:

8 0

X+5-8=12
This is the equation you use. Then add 8 from both sides. You get x+5=20 then subtract 5 from both sides and you'll get x=15 which is the number. Hope it helps and mark as brainliest!

ankoles [38]3 years ago

5 0

X-8+5=12
x=12+8-5
x=15

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Answer:

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3 years ago

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Answer:

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3 years ago

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drek231 [11]

Answer:

95% Confidence interval: (96.06,103.94)

Step-by-step explanation:

We are given the following in the question:

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Population standard deviation, σ = 11

95% Confidence interval:

$\mu \pm z_{critical}\frac{\sigma}{\sqrt{n}}$

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$z_{critical}\text{ at}~\alpha_{0.05} = 1.96$

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(96.06,103.94) is the 95% confidence interval for the population mean test score.

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