Add or subtract. Assume all variables represent positive real numbers.
+ 
A. 13x + 78
B. 5x + 12
C. -
D. 5
Answer: D
Mathematics
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Graph.x2 + y2 = 4
A. 
B. 
C. 
D. 
Mathematics
Determine whether the number is divisible by 2, 3, 4, 5, 6, 7, 8, 9, and/or 10.83
A. 3, 5 B. 3 C. None D. 3, 7
Mathematics
Solve by factoring completely. If three identical cubes have a total volume of 3x3 + 27x2 + 81x + 81, find the length of one of the sides of one of the cubes.
A. x + 3 B. (x + 3)2 C. x - 3 D. 3(x + 3)
Mathematics
If the diameter of a wheel's rim is 23 in., what is the rim's circumference? Use the rules for working with measurements.
A. The length is 18.1 in. B. The length is 36.1 in. C. The length is 72.3 in. D. The length is 415 in. E. The length is 831 in.
Mathematics