Solve.The area of a circle is found by the equation A = ?r2. If the area A of a certain circle is 64? square centimeters, find its radius r.
A. 8 cm
B. 8
cm
C. ± 8 cm
D. 8? cm
Answer: A
Mathematics
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Solve.Andy wants to buy a refrigerator for $699, a stove for $459, and a dishwasher for $349. Round each cost to the nearest hundred to estimate the total cost.
A. $1400 B. $1600 C. $1300 D. $1500
Mathematics
Graph the solution set of the system.x - 2y ? 2 x + y ? 0
A. 
B. 
C. 
D. 
Mathematics
Solve the equation.
+ 
= - 
A. 
B. 
C. 
D. 
Mathematics
Find the square root.
A. 36
B. 6
C. 
D. 
Mathematics