Solve the equation and state the solution set.
- 
= 
A. 
B. {-16}
C. {16}
D. {4}
Answer: B
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Write the number in expanded form.7,000
A. (7 ? 103) + (0 ? 102) + (0 ? 101) + (0 ? 100) B. (7 ? 100) + (0 ? 101) + (0 ? 102) + (0 ? 103) C. (7 ? 104) + (0 ? 103) + (0 ? 102) + (0 ? 101) D. (7 ? 101) + (0 ? 102) + (0 ? 103) + (0 ? 104)
Solve. Use ? ? 3.14 and round to the nearest hundredth.Ellie bought a circular etched-glass table top to use as her dining room table. The glass is 6 ft in diameter. Find the cost of the table top at $87 per square yard of glass.
A. $2458.62 B. $4370.88 C. $273.18 D. $1092.72
Find the mean. Round to the nearest tenth when necessary.The numbers of miles John ran over the last six days were as follows: 5, 6, 10, 6, 12, 10
A. Mean = 6.7 miles B. Mean = 9.8 miles C. Mean = 8.7 miles D. Mean = 8.2 miles
Solve the problem using matrices.A chemist has prepared two acid solutions, one of which is 4% acid by volume, another 11% acid. How many cubic centimeters of each should the chemist mix together to obtain 50 cm3 of a solution that is 
acid.
A. 3.12 cm3 of 4%; 46.88 cm3 of 11% B. 20 cm3 of 4%; 20 cm3 of 11% C. No solution D. 34 cm3 of 4%; 16 cm3 of 11%