Assume that the expressions given are denominators of fractions. Find the least common denominator. 7a + 21, a2 + 3a
A. 7a(a + 3)
B. 7a2 + 3
C. 7a + 3
D. 7a2 + 21
Answer: A
Mathematics
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?Which of the following is not divisible by 6?
A. ?3,354 B. ?144 C. ?526 D. ?4,596 E. ?732
Mathematics
Find the exact value of the expression.tan 345°
A. 
B. 2 + 
C. -2 - 
D. 
Mathematics
For the point given in rectangular coordinates, find equivalent polar coordinates 
for 
and 
Approximate ? to the nearest hundredth of a radian.(-7, 24)
A. (25, 1.29) B. (50, 1.29) C. (25, 1.85) D. (25, 2.86)
Mathematics
Multiply.10x4(-4x4 + 12x2 - 8)
A. -40x8 + 120x6 B. -40x4 + 120x2 - 80 C. -40x8 + 12x2 - 8 D. -40x8 + 120x6 - 80x4
Mathematics