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antiseptic1488 [7]

3 years ago

14

Question 2

1 answer:

Masteriza [31]3 years ago

6 0

1.1, 0.10299, 0.1038, 0.9 im pretty sure

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A 48 and for 40 dollars you can buy 5 egg rolls

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2 years ago

1. Stewart had 30 candies in his pocket. If he gave of the

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3 years ago

Meow help me pls :(((

pentagon [3]

Answer:

a) 3x-5=16

b) 30cm

Step-by-step explanation:

a) 5(x-1)=2(x+8)

5x-5=2x+16

5x-2x-5=16

3x-5=16

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2 years ago

Find the cosine of angle B.

Alexandra [31]

$\boxed { \text {Cosine Rule : } a^2 = b^2 + c^2 - 2bc \cos(A) }$

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9² = 12² + 15² - 2 (12) (15) cos (B)

81 = 144 + 225 - 360 cos(B)

81 = 369 - 360 cos (B)

360 cos (B) = 369 - 81

360 cos (B) = 288

cos (B) = 0.8

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Answer: Cosine B = 0.8

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$\boxed { \text {Cosine Rule : } a^2 = b^2 + c^2 - 2bc \cos(A) }$

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12² = 15² + 9² - 2 (15)(9) cos (A)

144 = 225 + 81 - 270 Cos A

144 = 306 - 270 Cos A

270 Cos A = 162

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Answer: Cosine Angle A = 3/5

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2 years ago

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Step-by-step explanation: from my notes

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3 years ago