3 years ago

SIMPLIFY the expression! Please!

Mathematics

2 answers:

Levart [38]3 years ago

5 0

1+3^2 = 1+9 = 10

10/5 = 2

2-6+2 = -4+2

answer is -2

Misha Larkins [42]3 years ago

5 0

Your answer is -2 hope this helps!

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What is the area of a circle that has a circumference of 42 inches? A. 140.4 in2 B. 126.60 in2 C. 132.62 in2 D. 21.04 in2

tankabanditka [31]

Circumference = 2 $\pi$ r
   42 = 2 $\pi$ r
42/(2 $\pi$ ) = r
21/ $\pi$ = r

Area = $\pi$ r²
   = $\pi$ (21/ $\pi$ )²
   = 21²/ $\pi$
   = 140.37
   ≈ 140.4

Answer: A

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3 years ago

Evaluate the expression.

koban [17]

Answer:

-5

Step-by-step explanation:

-10 - (-5) is equal to -10 + 5

-10 + 5 is equal to -5

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4 years ago

Which fraction is not equivalent to 9/12 a.24/32 b.6/8 c.15/20 d.16/24

stiv31 [10]

The answer is D.

9/12 = 3/4
16/24 = 2/3

2/3 is not equivalent to 3/4

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3 years ago

Simplify the expression -1/2(-5/6 + 1/3)

alexira [117]

Answer: 1/4

Step-by-step explanation:

-

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3 years ago

The surface area of a cone is 54 square inches. What is the surface area of a similar cone that is three times as large?

12345 [234]

Given:

Given that the surface area of the cone is 54 square inches.

We need to determine the surface area of the cone that is similar to the cone three times large.

Surface area of the similar cone:

Let us determine the surface area of the similar cone.

The surface area of the similar cone can be determined by multiplying the surface area of the cone by 3. Because it is given that the similar cone is three times large.

Thus, we have;

$SA = 3 \times 54$

$SA=162$

Thus, the surface area of the similar cone is 162 square inches.

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3 years ago