Use even and odd properties of the trigonometric functions to find the exact value of the expression.cos
A. 
B. - 
C. - 
D. - 
Answer: D
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Solve the problem.There are 12 more sophomores than juniors in an 8 AM algebra class. If there are 78 students in this class, find the number of sophomores and the number of juniors in the class.
A. 90 sophomores; 66 juniors B. 33 sophomores; 45 juniors C. 45 sophomores; 33 juniors D. 78 sophomores; 66 juniors
Expand and simplify the given expression by use of the binomial formula.(xy - z)5
A. x5y5 - z5 B. x5y5 + 5x4y4z + 10x3y3z2 + 10x2y2z3 + 5xyz4 + z5 C. -x5y5 + 5x4y4z - 10x3y3z2 + 10x2y2z3 - 5xyz4 + z5 D. x5y5 - 5x4y4z + 10x3y3z2 - 10x2y2z3 + 5xyz4 - z5
Solve.A square has an area of 49 square inches. If the same amount is added to the length and removed from the width, the resulting rectangle has an area of 45 square inches. Find the dimensions of the rectangle.
A. 3 in. by 4 in. B. 5 in. by 9 in. C. 5 in. by 10 in. D. 4 in. by 9 in.
Perform the indicated operation.
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A. - 
B. - 
C. 
D. 