Which ratios in the list below are equivalent. Select all that apply.
a
24 : 12
b
...
Mathematics, 08.12.2020 02:00 gdhshwjfs
Which ratios in the list below are equivalent. Select all that apply.
a
24 : 12
b
14 : 28
c
10 : 5
d
18 : 2
e
9 : 4.5
Answers: 1
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Prove (a) cosh2(x) โ sinh2(x) = 1 and (b) 1 โ tanh 2(x) = sech 2(x). solution (a) cosh2(x) โ sinh2(x) = ex + eโx 2 2 โ 2 = e2x + 2 + eโ2x 4 โ = 4 = . (b) we start with the identity proved in part (a): cosh2(x) โ sinh2(x) = 1. if we divide both sides by cosh2(x), we get 1 โ sinh2(x) cosh2(x) = 1 or 1 โ tanh 2(x) = .
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Shape a is congruent to shape , as shown by a reflection across the y-axis and then a translation down units. shape b is congruent to shape , as shown by a reflection across the y-axis and then a translation down units.
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