Solve and check. Use the square root principle to eliminate the square.(x + 7)2 = 12
A. -7 ± 2
B. 2
± 7
C. -7 ± 2
D. ±2
Answer: C
Mathematics
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The graph below shows solution curves of a differential equation. Find an equation for the curve through the given point.
= sin x + cos x
A. y = sin x - cos x +1 B. y = sin x - cos x -2 C. y = sin x - cos x -1 D. y = sin x - cos x
Mathematics
Solve the problem.The distance, d, that a falling body falls in t seconds is given by the expressiond = 
gt2.Find d if g is 
and t = 8.0 s
A. 515 ft B. 2060 ft C. 129 ft D. 1030 ft
Mathematics
Find the LCD. Do not combine fractions.
, 
A. 24a3 B. 7a3 C. a3 D. 7a2
Mathematics
Simplify, where possible.7(3y - 4z) - y
A. 22y - 28z B. -4y - 4z C. 20y - 28z D. 20y - 4z
Mathematics