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3 years ago

The volume of a swimming pool is 4x^3 - 20x^2 + 3x - 15 . what is one of the dimensions of the pool

Mathematics

1 answer:

maxonik [38]3 years ago

5 0

Answer:

$Height = x - 5$ --- one of the dimension

Step-by-step explanation:

Given

$Volume = 4x^3 - 20x^2 + 3x - 15$

Required

The side dimension

Factorize the given expression

$Volume = 4x^2 (x- 5) + 3(x - 5)$

Factor out x - 5

$Volume = (4x^2 + 3)(x - 5)$

Volume is the product of base area and height'

Hence:

$Area = 4x^2 + 3$

$Height = x - 5$

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3 years ago

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In a sample with a number n of people surveyed with a probability of a success of $\pi$ , and a confidence level of $1-\alpha$ , we have the following confidence interval of proportions.

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In which

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323 blacks, 86% of blacks said that they would welcome a white person into their families. This means that $n = 323, p = 0.86$

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So $\alpha = 0.05$ , z is the value of Z that has a pvalue of $1 - \frac{0.05}{2} = 0.975$ , so $Z = 1.96$ .

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3 years ago

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3 years ago

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The sale price after both markdowns will be $336

<em><u>Explanation</u></em>

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and the selling price after first 6 months will be: $\$600-\$180=\$420$

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3 years ago

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Hi there! The answer is 10 miles.

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2 years ago

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