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creativ13 [48]
2 years ago
12

Find M A. 17 B. 16 C. 18 D. 20

Mathematics
1 answer:
mixas84 [53]2 years ago
7 0

Answer:

A. 17

Step-by-step explanation:

using the cosine rule (also see attached for reference):

AB² = BC² + AC² - 2·AC·BC cos C

2·AC·BC cos C = BC² + AC² - AB²

Given that AC = 18, AB = 12 and BC = 18, substituting these into the formula

2(18)(28) cos C = 28² + 18² - 12²

1008 cos C = 964

cos C = 964/1008

cos C = 0.9563

C = cos⁻¹ 0.9563

C = 16.99 ( = 17° rounded to nearest degree)

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Answer:

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Step-by-step explanation:

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6 x^2 - 4 x = 1

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Write the left hand side as a square:

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3 years ago
In triangle PQR, m∠P = 30°, m∠Q = 90°, and m∠R = 60°. If the triangle is rotated 90° clockwise about a point, what is the measur
bixtya [17]

m<P=60°

Refer to the attachments

8 0
2 years ago
Emy paid 24.50 for 4 baskets of apples. How much did she pay for each basket?
Neporo4naja [7]

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3 years ago
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Step-by-step explanation:

Given

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