An ellipse is represented by the b
-=
1
225
Each dir...
Mathematics, 22.04.2020 23:18 deelashasharma
An ellipse is represented by the b
-=
1
225
Each directrix of this ellipse is a
from the center on the major axis.
horizontal line that is 20 units
vertical line that is 20 units
horizontal line that is 31.25 units
vertical line that is 31.25 units
Answers: 3
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Prove (a) cosh2(x) ā sinh2(x) = 1 and (b) 1 ā tanh 2(x) = sech 2(x). solution (a) cosh2(x) ā sinh2(x) = ex + eāx 2 2 ā 2 = e2x + 2 + eā2x 4 ā = 4 = . (b) we start with the identity proved in part (a): cosh2(x) ā sinh2(x) = 1. if we divide both sides by cosh2(x), we get 1 ā sinh2(x) cosh2(x) = 1 or 1 ā tanh 2(x) = .
Answers: 3
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Huong is organizing paperback and hardback books for her club's used book sale. the number of paperbacks is 12 less than three times the number of hardbacks. huong had 162 paperbacks. how many hardback books were there?
Answers: 1
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The slope of the line passing through the points (2, 7) and (-4, 8) is
Answers: 2
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