Use the distributive property to simplify the radical expressions.5(9 + 
)
A. 45
B. 6
C. 5
+ 45
D. 225
Answer: C
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Solve the problem.Consider the area of the region in the first quadrant enclosed by the curve y = 
cosh 8x, the coordinate axes, and the line x = 10. This area is the same as the area of a rectangle of a length s, where s is the length of the curve from 
to 
What is the height of the rectangle?
A. 
B. 8
C. sinh 80
D. 
sinh 80
Given a group of students: 
or 
list and count the different ways of choosing the following officers or representatives for student congress. Assume that no one can hold more than one office.A president, a secretary, and a treasurer, if the president must be a woman and the other two must be men
A. BAC, BAE, BCE, DAC, DAE, DCE; 6 B. BAC, BAE, BCE, DAC, DAE, DCE, BCA, BEA, BEC, DCA, DEA, DEC; 12 C. BAC, BAE, DAC, DAE; 4 D. ABD, CBD, EBD; 3
Divide. Leave your answer in exponent form. Assume that all variables in any denominator are nonzero.
A. s6t6 B. s10t8 C. s6t5 D. s6t7
Solve the problem.A domed ceiling is a parabolic surface. For the best lighting on the floor, a light source is to be placed at the focus of the surface. If 10 m down from the top of the dome the ceiling is 30 m wide, find the best location for the light source.
A. 16.8 m down from the top B. 11.2 m down from the top C. 22.5 m down from the top D. 5.6 m down from the top