Solve the problem.The sum of the reciprocals of two consecutive integers is 
. Find the integers.
A. 19 and 20
B. 8 and 9
C. 10 and 11
D. 9 and 10
Answer: D
Mathematics
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Simplify the expression. Assume that all variables are positive when they appear.
? 
A. 
B. 3
C. 
D. 3
Mathematics
First, write the value or values of the variable that make a denominator zero. Then solve the equation.
+ 
= 
A. -1, 1; ? B. none; {1} C. -1, 1; {2} D. -1; {1}
Mathematics
Find the exact value of the indicated trigonometric function of ?.sin ? = 
, sec ? < 0Find cos ? and tan ?.
A. cos ? = - 
, tan ? = - 
B. cos ? = - 
, tan ? = 
C. cos ? = 
, tan ? = 
D. cos ? = - 
, tan ? = - 
Mathematics
Multiply.(10 + 4x)(9 + 4x)
A. 4x2 + 76x + 76 B. 16x2 + 76x + 90 C. 16x2 + 75x + 90 D. 16x2 + 90x + 76
Mathematics