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puteri [66]
3 years ago
12

How do you solve number 27 and 28

Mathematics
1 answer:
Elanso [62]3 years ago
8 0

27) if a = 1/a

multiply both sides by a

a * a = 1/a * a

a^ 2 = 1

Answer is D) 1

28)

6 x 75 = 450

7 x 80  = 560

8 x 85 = 680

9 x 90 = 810

Total all students in class = 6 + 7 + 8 + 9 = 30 students

Total score of whole class:

450 + 560 + 680 + 810 = 2500

Average = 2500 /30 = 83.3 = 83 1/3

Answer is C) 83 1/3

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2 years ago
Helen plays basketball. For free throws, she makes the shot 75% of the time. Helen must now attempt two free throws. The probabi
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3 years ago
Miles had a piece of paper 1/4 of a large circle cut in three equal parts from the center point of the circle. What angle is the
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3 years ago
80 members decreased by 65%
LekaFEV [45]
Do a proportion
65/100= x/80

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5 0
3 years ago
HELP
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Answer:

c) 6

Step-by-step explanation:

This is a straight-forward application of the Law of Cosines:

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The best choice is c) 6.

3 0
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