Divide.
A. r2 - 4
B. r2 + 4
C. r + 4
D. r - 4
Answer: D
Mathematics
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What property of whole-number multiplication justifies the equality?5(x + 8) = 5x + 5 ? 8
A. Commutative property B. Distributive property C. Multiplicative-identity property D. Associative property
Mathematics
Solve by completing the square.a2 - 2a - 3 = 0
A. 3, -1
B. -2, -1
C. -3, 1
D. ± 
Mathematics
Approximate the area under the graph of f(x) over the specified interval by dividing the interval into the indicated number of subintervals and using the left endpoint of each subinterval.f(x) = 
; interval [1, 5]; 4 subintervals
A. 0.4636 B. 2.0833 C. 1.4236 D. 1.4636
Mathematics
Do the addition. Simplify the result when possible.
?
?
A.
B.
C.
D.
E.
Mathematics