Solve the problem.A ball dropped from the top of a building has a height of s = 256 - 16t2 meters after t seconds. How long does it take the ball to reach the ground? What is the ball's velocity at the moment of impact?
A. 8 sec, -64 m/sec
B. 4 sec, -128 m/sec
C. 16 sec, -512 m/sec
D. 4 sec, 128 m/sec
Answer: B
Mathematics
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Round the number to the nearest ten, nearest hundred, and nearest thousand.3257
A.
| Ten | 3250 |
| Hundred | 3200 |
| Thousand | 4000 |
B.
| Ten | 3000 |
| Hundred | 3300 |
| Thousand | 3000 |
C.
| Ten | 3260 |
| Hundred | 3200 |
| Thousand | 3000 |
D.
| Ten | 3260 |
| Hundred | 3300 |
| Thousand | 3000 |
Mathematics
Simplify the expression.
A. 1 B. 25 C. -1 D. 2
Mathematics
Factor.x2 + 3xy - 10y2
A. (x - 5y)(x + y) B. (x + 5y)(x - 2y) C. (x - y)(x + 2y) D. (x - 5y)(x + 2y)
Mathematics
Write an expression for the ?nth term of the sequence 
, 
, 
, 
, ....
??
A. ?
B. ?
C. ?
D. ?
E. 
Mathematics