Determine whether the value of x = 12 is a solution of the equation.
?
?
A. No
B. Yes
Answer: B
Mathematics
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Verify the identity.
= cot y - tan x
What will be an ideal response?
Mathematics
Solve the problem.A rock falls from a tower that is 78.4 m high. As it is falling, its height is given by the formula 
with t in seconds. How many seconds will it take for the rock to hit the ground (h = 0)?
A. 1254.4 sec B. 4 sec C. 8.6 sec D. 8.9 sec
Mathematics
The given triangles are similar. Find the unknown length n. Be sure to include units in the answer.
A. 10 cm B. 5 cm C. 7 cm D. 15 cm
Mathematics
Express the given function H as a composition of two functions f and g such that H(x) = (f ? g)(x).H(x) = (9x + 16)5
A. f(x) = 9x5, g(x) = x + 16 B. f(x) = (9x)5, g(x) = 16 C. f(x) = x5, g(x) = 9x + 16 D. f(x) = 9x + 16, g(x) = x5
Mathematics