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3 years ago

A. 192° b. 168° c. 84° d. 96°

Mathematics

1 answer:

grigory [225]3 years ago

7 0

Letter D because of the vertical angles theorem. Vertical angles are congruent.

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Ratling [72]

Answer:

Step-by-step explanation:

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3 years ago

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How would I work this out

liraira [26]

Answer:

10.1

Step-by-step explanation:

You can find the length of XY by first finding YZ using the Pythagorean theorem. Then subtract the length from 15 for the length of the other triangle. Use the Pythagorean theorem again to find XY.

The Pythagorean theorem is used for all right triangles and is the formula $a^2 + b^2 = c^2$ . Here a = 4, b is unknown and c = 7.

So $4^2 + b^2 = 7^2\\16 + b^2 = 49\\b^2 = 33\\b = \sqrt{33} =5.75$

Subtract 5.75 from 15.

15 - 5.75 = 9.25.

Repeat the Pythagorean Theorem again with a = 4, b = 9.25 and c is unknown. Solve for c. This is XY.

$4^2 + 9.25^2 = c^2\\16 + 85.56 = c^2\\101.6 = c^2\\10.1 = c$

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DIA [1.3K]

B. ?
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stira [4]

$\bold{\underline{Direction}}:$ Read the questions carefully then write the letter of the correct answer.

1. N% of 200 is 80.

A. 40%

2. What is the value of N in this equation? N is 80% of 60

A. 48

3. N is 25% of 140. What is N?

A. 35

4. What percent of 60 is 12?

B. 20%

5. What percent of 160 is 64?

C. 40%

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