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2 years ago

Which of the following values of r will result in a true statement when substituted into the given equation?

Mathematics

2 answers:

galben [10]2 years ago

4 0

Answer:

B. r = -5 is the answer.

Charra [1.4K]2 years ago

3 0

Answer:

the right answer is -5 (B)

Step-by-step explanation:

-(-5) +5(-5+2)

5 + -15 = -10

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2 years ago

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Alik [6]

Answer:

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Step-by-step explanation:

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Hitman42 [59]

Answer:

156.5

Step-by-step explanation:

Thinking process:

The area can be calculated using the formula:

$S = \int\limits^4_3 {2\pi x\sqrt{1+}(2x)^{2} } \, dx$

We let the substitution take place.

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Thus, $du = 8dx.$

So,

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Thus,

$S = \int\limits^4_3 {2\pi \sqrt{1+4x^{2} } } \, dx \\= \int\limits^65_35 {2\pi \sqrt{\frac{1}{8}u } } \, dx$

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2 years ago

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Tamiku [17]

Answer:

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Step-by-step explanation:

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