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Mamont248 [21]
3 years ago
11

Express in simplest form (5a^2-3a+8)+ ( -4a^2-1)+(15a +11)

Mathematics
1 answer:
LekaFEV [45]3 years ago
6 0

Answer:

a^{2} + 12a + 18

Step-by-step explanation:

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The radius of a sphere is 11 cm.what is the surface area of the sphere? Round to the nearest tenth.
Vanyuwa [196]

Answer:

The answer is

<h2>1520.5 cm²</h2>

Step-by-step explanation:

Surface area of a sphere is given by

S = 4πr²

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From the question r = 11cm

So the surface area of the sphere is

4π(11)²

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3 years ago
Answer choices<br> a<br> b<br> c<br> d
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Answer:

<u><em>Either A or D</em></u>

Step-by-step explanation:

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Semmy [17]
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5 0
2 years ago
Given the triangle below, which of the following is a correct statement?
EleoNora [17]

ANSWER

(A)csc angle C equals 3 over 2

EXPLANATION

The cosecant is hypotenuse over opposite.

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\csc(B) = \frac{6}{5}

The secant is the hypotenuse over adjacent.

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\sec(B)  =  \frac{6}{4}

\sec(B)  =  \frac{3}{2}

The only correct choice is A

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