2 years ago

Brainliest for correct answer

Mathematics

1 answer:

Finger [1]2 years ago

3 0

D hope this helps xx

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If y varies inversely as x and y=-11 when x=1, what is y when x =11?

faust18 [17]

Answer:

I thinks it is -11

Step-by-step explanation:

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3 years ago

Each year, all final year students take a mathematics exam. It is hypothesized that the population mean score for this test is 8

drek231 [11]

Answer:

95% Confidence interval: (96.06,103.94)

Step-by-step explanation:

We are given the following in the question:

Population mean, μ = 85

Sample mean, $\bar{x}$ = 100

Sample size, n = 30

Alpha, α = 0.05

Population standard deviation, σ = 11

95% Confidence interval:

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

Putting the values, we get,

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

$100 \pm 1.96(\frac{11}{\sqrt{30}} ) = 100 \pm 3.94= (96.06,103.94)$

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

8 0

3 years ago

List 3 values that would make this inequality true y + 7 > 18

blsea [12.9K]

Answer:It

It can be 12, 13, 14 and more up

Step-by-step explanation:

Is that because 12+7= 19 which is bigger than 18

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3 years ago

Madison wants to buy a new iPhone. The regular price is $989. Apple is offering a 15% discount and a sales tax of 7% is added af

Rzqust [24]

Answer: $899.50

Step-by-step explanation:

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2 years ago

Please help, thank you

abruzzese [7]

Answer:

sorry but the question won't load i would love to help though

Step-by-step explanation:

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