Simplify, where possible.30x - 9y - 20x - 7y
A. -10x - 16y
B. 10x - 16y
C. 10x - 2y
D. 10x - 9y - 7
Answer: B
Mathematics
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?Find the volume of a cube of dimension: s = 7 dm if a cube of dimension: s = 4 dm is cut out of it.
A. ?V = 27 dm3 B. ?V = 279 dm3 C. ?V = 343 dm3 D. ?V = 407 dm3 E. ?None of the above.
Mathematics
Reduce the fraction to simplest form.
A. Cannot be simplified
B. r - s
C. 
D. r + s
Mathematics
Simplify the expression by combining like terms. -5.51x + (-0.74x)
A. -6.25x B. 6.25x C. 4.77x D. -4.77x
Mathematics
Perform the indicated operation and write the answer in lowest terms. - 
+ 
+ 
A. - 
B. - 
C. 
D. 
Mathematics