Mathematics, 30.03.2021 08:30 2021arabellacorsino
7) How many terms of the arithmetic sequence {1,3,5, 7,...} will give a sum of 961?
n(2a1 + (n - 1)d)
Sn
2
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You will need to factor to solve the quadratic equation
PLZ ANSWER
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Aman is 6 feet 3 inches tall. the top of his shadow touches a fire hydrant that is 13 feet 6 inches away. what is the angle of elevation from the base of the fire hydrant to the top of the man's head?
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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) = .
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7) How many terms of the arithmetic sequence {1,3,5, 7,...} will give a sum of 961?
n(2a1 + (n - 1)...
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