Multiply. Leave your answer in scientific notation.(4.0 × 10-5)(9.0 × 10-8)(2.0 × 103)
A. 7.2 × 10-9
B. 72 × 10-10
C. 7.2 × 10-10
D. 72 × 10-9
Answer: A
Mathematics
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Round the dollar amount to the nearest dime (tenth), but express the answer in dollars and cents.$7.446
A. $7.30 B. $7.50 C. $7.45 D. $7.40
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Find the indicated sum.
A. 4940 B. 4807 C. 4522 D. 4636
Mathematics
Find the expected value.Mr. Cameron is sponsoring an summer concert. He estimates that he will make $300,000 if it does not rain and make $60,000 if it does rain. The weather bureau predicts the chance of rain is 0.34 for the day of the concert. What are Mr. Cameron's expected concert earning?
A. $300,000 B. $360,000 C. $60,000 D. $218,400
Mathematics
Divide as indicated or state that the division is undefined.
A. - 
B. -26
C. -16
D. 16
Mathematics