Mathematics, 05.05.2020 08:29 zoeybuch5
The perimeter of a rectangle is 56 inches. The rectangle is 20 inches long. How wide is the rectangle?
A
8 inches
B
36 inches
C
18 inches
D
16 inches
Answers: 1
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Simplify 6sin θsec θ. choices a) 6 tan θ b) 6 cos θ c) 6 cot θ d) 6
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The reflexive property of congruence lets you say that ∠pqr ≅
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Prove (a) cosh2(x) − sinh2(x) = 1 and (b) 1 − tanh 2(x) = sech 2(x). solution (a) cosh2(x) − sinh2(x) = ex + e−x 2 2 − 2 = e2x + 2 + e−2x 4 − = 4 = . (b) we start with the identity proved in part (a): cosh2(x) − sinh2(x) = 1. if we divide both sides by cosh2(x), we get 1 − sinh2(x) cosh2(x) = 1 or 1 − tanh 2(x) = .
Answers: 3
The perimeter of a rectangle is 56 inches. The rectangle is 20 inches long. How wide is the rectangl...
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