Find the length of the latus rectum of the parabola.Focus: (2, 0); vertex (8, 0).
A. 
B. 6
C. 24
D. 12
Answer: C
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Solve the problem.If friction is ignored, the time t (in seconds) required for a block to slide down an inclined plane is given by the formula t = 
where a is the length (in feet) of the base and g ? 32 feet per second per second is the acceleration of gravity. How long does it take a block to slide down an inclined plane with base a = 11 when 
If necessary, round the answer to the nearest tenth of a second.
A. 0.3 sec B. 1.3 sec C. 1.2 sec D. 1.5 sec
Multiply and simplify.25 ? 
A. 
B. 125
C. 5
D. 
A piecewise function is given. Use the properties of limits to find the indicated limits, or state that the limit does not exist.f(x) = 
a. 
f(x)
b. 
f(x)
c. 
style="vertical-align: -21.0px;" />f(x) A. a. 5 b. 5 c. 4 B. a. 5 b. 5 c. 5 C. a. 4 b. 6 c. does not exist D. a. 5 b. 4 c. does not exist
Right triangle ABC has 
, 
, and 
style="vertical-align: middle;" data-wiris-created="true" varid="variable_id_field" variablename="impvar_14455ebf5b3b4469b28aa8009" />. Use this information to find cos A.
?
A. 
B. ?
C. ?
D. ?
E. ?