3 years ago

Which letter is A) B) C) D)

Mathematics

1 answer:

ANTONII [103]3 years ago

6 0

The answer to 7 is B

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Step-by-step explanation:

3+(a+4)(8-b)

3+(5+4)(8-6)

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3 years ago

Which property can be used to expand the expression -2(3/4*+7)?

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C. The distributive property

Step-by-step explanation:

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3 years ago

Mandy bought a sweater that cost d dollars. She paid the clerk $40.00. Which expression shows her purchase?

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thats the expression

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3 years ago

Mona wants to obtain a 94% confidence interval for the mean weight of turtles. She read in the Big Book of Turtles that the stan

mel-nik [20]

Answer:

Step-by-step explanation:

Population standard deviation = σ = 37 grams

Confidence interval = 94%

(1-α)×100% = 94

⇒α = 0.06

From table z table and interpolation

z = 1.881

L = Confidence interval length = 15

N = Number of samples

$L=2z_{\alpha/2}\frac{\sigma}{\sqrt N}\\\Rightarrow \sqrt N=2z_{\alpha/2}\frac{\sigma}{L}\\\Rightarrow \sqrt N=2\times 1.881\frac{37}{15}\\\Rightarrow \sqrt N=9.2796\\\Rightarrow N=86.11097616\approx 87$

∴ Number of turtles must she must weigh is 87

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4 years ago