Solve the equation by factoring.x2 - 25 = 0
A. {5}
B. {25}
C. {-5}
D. {5, -5}
Answer: D
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Solve the equation. Round to the nearest tenth, if necessary.A rock falls from a tower that is 416 feet high. As it is falling, its height is given by the formula h = 416 - 16t2. How many seconds will it take for the rock to hit the ground (h=0)? Round to the nearest tenth of a second.
A. 20.4 sec B. 5.1 sec C. 10,816 sec D. 20 sec
Find the x-intercepts of: -4x²+8x-3
What will be an ideal response?
Solve using the elimination method. 8x + 9y = 81-3x - 6y = -54
A. (0, 9) B. (81, -54) C. (-1, 10) D. (0, 10)
The problem that follows refers to triangle ABC.
?
If 
and 
yd, find a.
?
Apply the rules regarding the use of significant digits after all computations are complete.
?
A. 49.1 yd B. 56.1 yd C. 53.1 yd D. 55.1 yd E. 54.1 yd