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stepan [7]
3 years ago
9

Marcie can swim 20 laps in an hour. How many hours will it take her to swim 100 laps

Mathematics
2 answers:
ozzi3 years ago
7 0

Answer:

5 hours

Step-by-step explanation:

It takes Marcie 1 hour to swim 20 laps so to swim 100 laps divide by 20. 100/20=5

Margarita [4]3 years ago
4 0

Answer:

5 hours

Step-by-step explanation:

We can write a ratio

20 laps           100 laps

-------------- = --------------

1 hour            x hours

Using cross products

20x = 100

Divide by 20

20x/20 = 100/20

x = 5 hours

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kow [346]

Answer: 110, 35, 70, G, J, F, E, B, A, H, C, D, I

Step-by-step explanation:

8. For number 8, you will be using the exterior angle theorem. The exterior angle theorem states that the exterior angle equals the two angles inside the given triangle. Since we have 50 and 60, you will add 50 + 60 to get 110.

9. In this problem, you shall use the vertical angle theorem. The vertical angle theorem is simply that any angles vertical from one another are congruent. So a will be also 35 degrees.

10. This is an image depicting two lines cut by a transversal, creating multiple congruent angles. With this, you will be using the alternate interior angle theorem. Alternate interior angles are angles on different sides of the transversal but inside both of the lines that were cut into, as shown above. So,  b will also equal 70 degrees.

Part B:

1. G

2. J

3. F

4. E

5. B

6. A

7. H

8. C

9. D

10. I

8 0
3 years ago
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lara31 [8.8K]
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3 years ago
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Karolina [17]

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3 0
2 years ago
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Ber [7]

Answer:

D. 25%

Step-by-step explanation:

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