Find the dot product, u ? v, for the given vectors.u = 
, v = 
A. -28
B. -6
C. 78
D. -12
Answer: D
Mathematics
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Write the number in scientific notation.0.0000013311
A. 1.3311 × 10-5 B. 1.3311 × 106 C. 1.3311 × 10-6 D. 1.3311 × 10-7
Mathematics
Solve the problem.Sue can sew a precut dress in 3 hours. Helen can sew the same dress in 2 hours. If they work together, how long will it take them to complete sewing that dress? Give your answer rounded to one decimal place, if necessary.
A. 1.8 hr B. 5 hr C. 2.5 hr D. 1.2 hr
Mathematics
Evaluate the expression without using a calculator, and write your answer in radians.
?
?
A. 0
B. 
C. 
D. 
E. 
Mathematics
Estimate the sum or difference by first rounding each number to the nearest ten.532.432 - 338.01
A. 170 B. 180 C. 200 D. 190
Mathematics