Factor the difference of squares.25x2 - 25y2
A. 5(x + y)(x - y)
B. (5x + y)(5x - y)
C. 25(x - y)2
D. 25(x + y)(x - y)
Answer: D
Mathematics
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Find the product.(p - r)(p + r)
A. p2 - r2 B. 2p2 - r2 C. p2 - 2r2 D. p2 + r2
Mathematics
Find the missing length to the nearest tenth.
A. b = 3.3 m B. b = 429 m C. b = 28.7 m D. b = 20.7 m
Mathematics
Use the information below to determine the cardinality of the set. U = {q, r, s, t, u, v, w, x, y, z} A = {q, s, u, w, y} B = {q, s, y, z} C = {v, w, x, y, z}n(A ? B ? C)
A. 2 B. 1 C. 0 D. 8
Mathematics
Solve the problem.An arch in the form of a semiellipse is 52 ft wide at the base and has a height of 20 ft. How wide is the arch at a height of 12 ft above the base?
A. 41.6 feet B. 35.5 feet C. 20.8 feet D. 17.7 feet
Mathematics