3 years ago

Find the area of the triangle with the following measurements: B = 67°, a = 13 cm, c = 21 cm

Mathematics

1 answer:

Anarel [89]3 years ago

6 0

9514 1404 393

Answer:

125.6 cm²

Step-by-step explanation:

The relevant area formula is ...

Area = (1/2)ac·sin(B)

Area = (1/2)(13 cm)(21 cm)·sin(67°) ≈ 125.6 cm²

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Wilma earns $9 per hour at her job. Then she spent $15 on a birthday gift for her best friend. Write an expression to represent

frozen [14]

Answer:

Wilma has $12.

Step-by-step explanation:

Since we don't know how many hours she worked, we know that Wilma earned 9x dollars at her job. Then she spends $15, so we can just subtract 15 from 9x.

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We can just replace the x with 3 to get:

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3 years ago

Read 2 more answers

Find the area of the triangle be sure to include the correct unit in your answer

Vlad1618 [11]

Answer:

120 cm squared

Step-by-step explanation:

$Area \:of \:the\: triangle \\ = \frac{1}{2} \times base \times height \\ \\ = \frac{1}{2} \times 10 \times 24 \\ \\ = 12 \times 10 \\ \\ = 120 \: {cm}^{2}$