Solve the radical equation, and check all proposed solutions.
- 
= 1
A. ?
B. {-3, -1}
C. {-1, 3}
D. {3}
Answer: C
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Solve the problem.A cashier has a total of 140 bills, made up of fives and tens. The total value of the money is $910. How many ten-dollar bills does the cashier have?
A. 42 ten-dollar bills B. 21 ten-dollar bills C. 63 ten-dollar bills D. 98 ten-dollar bills
Find the exact interest to the nearest cent.$4,900 at 5% for 189 days
A. $12.69 B. $126.86 C. $12.86 D. $128.63
Find the expected value.A new light bulb has been found to have a 0.02 probability of being defective. A shop owner receives 500 bulbs of this kind. How many of these bulbs are expected to be defective?
A. 20 B. 100 C. 10 D. 500
Provide an appropriate response.Which one of the following ratios is not the same as 5 to 6?
A. 6 to 5 B. 50 to 60 C. 10 to 12 D. 200 to 240