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Delicious77 [7]
2 years ago
12

What rational number is equal to -2/3

Mathematics
1 answer:
valkas [14]2 years ago
7 0

Answer:

Here is a little prompt to help you out.

Step-by-step explanation:

Two rational numbers are said to be equivalent if we divide each decimal value will be the same. that is if a/b is equivalent to c/d if a/b=p.

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vazorg [7]
Answer: what do you need help with

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6 0
3 years ago
I need help on questions 48 49 and 50 and u need to find the surface area of the 3 polyhedras please and thank you!
White raven [17]

48. The surface area of a cylinder is given by

... A = 2πr² + 2πrh = 2πr(r+h)

For r = 13 mi and h = 7 mi, this becomes

... A = 2π(13 mi)(13 mi + 7 mi) = 520π mi²

The surface area of the cylinder is 520π mi² ≈ 1634 mi².

49. The surface area of a rectangular prism is

... A = 2(LW + H(L+W))

For L = 20 m, W = 10 m, H = 7 m, this becomes

... A = 2((20 m)(10 m) + (7 m)(20 m + 10 m)) = 2(200 m² + 210 m²) = 820 m²

The surface area of the prism is 820 m².

50. The formula is the same as for problem 48.

For r = 10 m and h = 13 m, this becomes

... A = 2π(10 m)(10 m + 13 m) = 460π m² ≈ 1445 m²

The surface area of the cylinder is 460π m² ≈ 1445 m².

_____

When calculations are repetitive, it is convenient to let a calculator or spreadsheet do them.

7 0
3 years ago
Shelby will take a total of 6 tests. On the first 5 tests, her scores were: 80, 85, 73, 78, 90. If she wants a mean grade of 80,
Andrew [12]

Answer:

74

Step-by-step explanation:

4 0
3 years ago
Find the measure of missing angle 20 130
lana [24]

Answer:

30°

Step-by-step explanation:

130+20=150

180-150= 30

6 0
3 years ago
1. What are the parts of a simple paragraph?
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Answer:

The Answer is A.introduction,Body,and ending

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3 0
2 years ago
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