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3 years ago

I will mark brainliest

Mathematics

1 answer:

dalvyx [7]3 years ago

6 0

Answer:

Step-by-step explanation:

This is 30°-60°-90° triangle, so the sides are in the ratio 1:√3:2

The side opposite the 30° angle is 10√3, so the side opposite the 60° angle is √3×10√3= 30, and the side opposite the 90° angle is 2×10√3 = 20√3.

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4 years ago

There were 48 runners to start a race. In the first half of the race, 2/5 of them dropped out. In the second half of the race, 1

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Step-by-step explanation:

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3 years ago

Read 2 more answers

The ratio of runners to swimmers was 3:2. When 28 runners dropped out of the competition, the ratio became 5:6. How many total s

xz_007 [3.2K]

The total of 42 swimmers are competing

Step-by-step explanation:

The given is:

The ratio of runners to swimmers was 3 : 2
When 28 runners dropped out of the competition, the ratio became 5 : 6

We need to find how many total swimmers are competing

∵ The ratio of runners to swimmers was 3 : 2

- Multiply each term of the ratio by x

∴ There are 3x runners and 2x swimmers

∵ 28 runners dropped out of the competition

∴ The number of runners who complete = 3x - 28

∵ The ratio became 5 : 6

- Equate the ratio between the new number of runners and the

number of swimmers by 5 : 6

∵ The new number of runners = 3x - 28

∵ The number of swimmers = 2x

∴ $\frac{3x-28}{2x}=\frac{5}{6}$

- By using cross multiplication

∴ 6(3x - 28) = 5(2x)

- Simplify both sides

∴ 18x - 168 = 10x

- Add 168 to both sides

∴ 18x = 10x + 168

- Subtract 10x from both sides

∴ 8x = 168

- Divide both sides by 8

∴ x = 21

∵ The number of swimmers is 2x

∵ x = 21

∴ The number of swimmers = 2(21) = 42

The total of 42 swimmers are competing

Learn more:

You can learn more about the ratio in brainly.com/question/2707032

#LearnwithBrainly

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3 years ago

if I had a triangle and one side was 45 degrees and the other side was 2k and the other side was k then what is the value of k?

DanielleElmas [232]

K = 45 180=45+2(45)+45

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3 years ago

I NEED HELP PLEASE !!!!!<br><br> answer needs to be in simplest radical form

AnnZ [28]

Answer:

Use the image as an example

Step-by-step explanation:

Use this image as an example to solve it may help.

Hopefully this helps:)

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3 years ago