Mathematics, 30.12.2019 06:31, JS28boss

May someone me with these two questions i'm struggling with above.

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Mathematics, 21.06.2019 13:20, areanna02

Which equation and solution can be used to solve this problem? thirteen less than a number is sixteen. 13-n=16: add 13 to both sides. the answer is 29. n+13=16: subtract 13 from both sides. the answer is 3. n+16=13 subtract 13 from both sides. the answer is 3. n-13=16: add 13 to both sides. the answer is 29.

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Mathematics, 21.06.2019 16:30, tamya12234

If 10 men take 18 days to mow 60 acres of grass, how long will 15 men take to mow 80 acres?

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Mathematics, 21.06.2019 19:30, ochoanene822

Which of the following transformations will always produce a congruent figure?

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Mathematics, 21.06.2019 19:50, Roshaan8039

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) = .

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