Find the product.7x2 y(-9x6y + 6x3)
A. -63xy + 42x
B. -63x8y2 + 42x5
C. -63x8y2 + 42x5y
D. -63x8y2 + 6x3
Answer: C
Mathematics
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Solve the problem.The number of periods needed to double an investment when a lump sum is invested at 2%, compounded semiannually, is given by n = log1.01 2. Use the change of base formula to find n, rounded to the nearest tenth.
A. 69.7 periods B. 72.7 periods C. 65.7 periods D. 74.7 periods
Mathematics
Solve.A cyclist bikes at a constant speed for 24 miles. He then returns home at the same speed but takes a different route. His return trip takes one hour longer and is 29 miles. Find his speed.
A. 7 mph B. 5 mph C. 6 mph D. 4 mph
Mathematics
Determine whether the following is a difference of squares.9x2 - 36y2
A. No B. Yes
Mathematics
Verify the identity.sec 
= -csc ?
What will be an ideal response?
Mathematics