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3 years ago

The ratio of the measurements of two complementary angles is 7:11. Find the measure of each angle.

Mathematics

1 answer:

Vadim26 [7]3 years ago

5 0

Answer:

70 and 110 degrees

Step-by-step explanation:

7+11=18 units

180 degrees/18 units=10 degrees per unit

7x10=70 degrees

11x10=110 degrees

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Musya8 [376]

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33/7

Step-by-step explanation:

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4 years ago

The thing is in the picture

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The answer should be C 20

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3 years ago

Find the missing coefficient (4d—4)(3d—2)=12d^2+ []d+8

sergij07 [2.7K]

<span>(4d-4)(3d-2)=12d^2 + []d + 8

Using FOIL method:
4d x 3d = 12d^2
4d x -2 = -8d
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-4 x -2 = 8

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3 years ago

A long distance runner does a first lap around a track in exactly 50 seconds.As she tires.Each subsequent lap takes 20% longer t

madreJ [45]

Answer:

182 seconds

Step-by-step explanation:

Given:

Time taken for first lap is 50 seconds and each subsequent lap takes 20% longer than previous

Solution:

Time taken for first lap = 50 sec

For second lap

Each subsequent lap takes 20% longer than previous

Previous lap time = 50 sec

second lap = 50 + 20% of 50

second lap $=50+(\frac{20}{100}\times 50)$

second lap $= 50 + 10$

second lap $= 60\ sec$

For third lap

Each subsequent lap takes 20% longer than previous

Previous lap time = 60 sec

Third lap = 60 + 20% of 60

$Third\ lap = 60 + (\frac{20}{100}\times 60)$

$Third\ lap = 60+2\times 6$

$Third\ lap = 60+12$

$Third\ lap = 72\ sec$

Time taken for 3 laps is equal to sum of all three laps time.

$Tiem\ taken\ for\ 3\ lap = 50+60+72$

$Tiem\ taken\ for\ 3\ lap = 182\ sec$

Therefore, it takes 182 seconds (3 min, 2 seconds) to run three laps

6 0

4 years ago