Establish the identity.
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What will be an ideal response?
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Find the magnitude of u × v and the unit vector parallel to u × v in the direction of u × v.u = -5i + 4j + 2k, v = 10i - 8j - 4k
A. 0; no direction
B. 15; 
(5i - 4j - 2k)
C. 0; 5i- 4j - 2k
D. 3
; 
(5i - 4j - 2k)
Solve the problem.The price P of a certain computer system decreases immediately after its introduction and then increases. If the price P is estimated by the formula P = 120t2 - 1500t + 6100, where t is the time in months from its introduction, find the time until the minimum price is reached.
A. 25 months B. 12.5 months C. 6.3 months D. 7.5 months
Find the sum of the given infinite geometric series if possible. Write the answer as a decimal number if appropriate.8 - 2 + 
- 
+ . . .
A. 7.1 B. 7.4 C. 5.9 D. 6.4
Provide an appropriate response.A man standing on a pitcher's mound throws a ball straight up with an initial velocity of 32 feet per second. The height h of the ball in feet t seconds after it was thrown is described by the function h(t) = -16t2 + 32t + 8. Use a graphing calculator to graph the function.
What will be an ideal response?