3 years ago

I need this ASAP! Solve:

Mathematics

1 answer:

mina [271]3 years ago

7 0

Ok the answer would be x=11

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HELP PLZZ<br><br> Which figure shows a reflection of pre-image DEFG over the x-axis?

scoray [572]

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3 years ago

An analyst from an energy research institute in California wishes to precisely estimate a 99% confidence interval of the average

Lena [83]

Answer:

190

Step-by-step explanation:

Data provided in the question:

Confidence level = 99%

Therefore,

α = 1% = 0.01

[ from standard normal table ]

z-value for $z_{\frac{\alpha}{2}}= z_{\frac{0.01}{2}}=$ = 2.58

Margin of error, E = $0.06

Standard deviation, σ = $0.32

Now,

n = $(\frac{z_{0.005}\sigma}{E})^2$

Here,

n is the sample size (or the minimum number of gas stations )

on substituting the respective values, we get

= $(\frac{z_{0.005}\sigma}{E})^2$

= $(\frac{2.58\times0.32}{0.06})^2$

= 13.76²

= 189.3376 ≈ 190

Hence,

minimum number of gas stations that she should include in her sample is 190

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3 years ago

Which of these ordered pairs is a solution to the inequality 3x + y > – 8 ? (–3, 0) (–2, –1) (0, –10) (2, –16)

Alenkinab [10]

I think that these ordered pairs would be the answer (-2,-1).

5 0

4 years ago

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Need help on this please

rodikova [14]

Answer:

The answer should be 113.04

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3 years ago

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GREYUIT [131]

Answer:

what even is this

Step-by-step explanation:

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3 years ago