Use the reciprocal identities to find the indicated function value.cot ? = - 
, find tan ?
A. 
B. - 
C. - 
D. 
Answer: C
Mathematics
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Solve.A rock falls from a tower that is 53.9 m high. As it is falling, its height is given by the formula 
How many seconds will it take for the rock to hit the ground (h=0)? Round to the nearest tenth.
A. 7.3 sec B. 600 sec C. 10.9 sec D. 3.3 sec
Mathematics
Find an equation for the sphere with the given center and radius.Center (0, -5, -2), radius = 3
A. x2 + y2 + z2 + 10y + 4z = -20 B. x2 + y2 + z2 + 10y - 4z = -20 C. x2 + y2 + 3z2 + 10y + 4z = -20 D. x2 + y2 + 3z2 + 10y - 4z = -20
Mathematics
Find the volume.
A.
| 169.884 cm3 |
B. 18.4 cm3
C. 54.78 cm3
D. 49.830 cm2
Mathematics
Solve the problem.A manufacturer's cost is given by C = 400
+ 200,where C is the cost, in dollars, and n is the number of parts produced. Find the cost when 125 parts are produced.
A. $80 B. $1200 C. $4672 D. $2200
Mathematics