Find the quotient.
A. 8x7y - 9x8y5
B. 8x7y - 9x8y4
C. 8x7 - 9x8y4
D. 8x8y - 9x8y4
Answer: B
Mathematics
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Simplify the expression.
+ tan ?
A. cos ? + sin ? B. sec ? C. 1 D. sin2 ?
Mathematics
Use mathematical induction to prove that the statement is true for all positive integers m.
Identify the first step of the solution.
A. Prove for 
.
B. For 
is true.
C. For 
. It's true.
Mathematics
Solve the problem.A vibrating wire has a vertical displacement given by 
Assume b and t are constants. Write y as a cosine function of x.
A. y = cos(2?x - bt) B. y = 6 cos(2?x - bt) C. y = 6 cos(2?x + bt) D. y = 12 cos(2?x + bt)
Mathematics
Use long division to divide.
a. -4x -22
b. 4x - 1
c. 
d. 
e. -4x + 1
Mathematics