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4 years ago

#28 please help i need help on 28

Mathematics

1 answer:

Lina20 [59]4 years ago

6 0

Answer: A

5.64-4.44 = 1.20

6.84-5.64 = 1.20

8.04-6.04 = 1.20

Each additional two hours adds $1.20 to the rental, so a slope of $0.60 per hour. That's the incremental cost per hour.

Two hours costs $4.44 so zero hours costs 4.44-1.20=$3.24. That's the y intercept, representing a fixed fee for every rental.

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Answer: 0.17 ± 0.096

Step-by-step explanation:

Confidence interval for difference between the population proportion :

$p_1-p_2\pm z^*\sqrt{\dfrac{p_1(1-p_1)}{n_1}+\dfrac{p_2(1-p_2)}{n_2}}$

, where $p_1$ = sample proportion for population 1.

$p_2$ = sample proportion for population 2.

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$n_2$ = Sample size from population 1.

As per given , we have

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$n_1=300\ \ \ \&\ \ n_2=400$

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Now , the 99% confidence interval estimate for the difference between the percentages of men and women who prefer Coca Cola over Pepsi :

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Hence, the correct answer is 0.17 ± 0.096.

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3 years ago

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3 years ago

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Complete Question:

You plant an 8-inch spruce tree that grows 4 inches per year and a 14-inch hemlock tree that grows 6 inches per year.

The initial heights are shown.

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Answer:

$s(x) = 8 + 4x$

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Step-by-step explanation:

Given

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$Initial\ Height = 8$

$Growth = 4$ (yearly)

Hemlock Tree (h):

$Initial\ Height = 14$

$Growth = 6$ (yearly)

Required

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