Rewrite the sum using sigma notation.4 + 6 + 8 + 10 + 12
A. 
B. 
C. 
D. 
Answer: B
Mathematics
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Find the exact value of the expression.cos
A. 
B. 
C. 
D. 
Mathematics
Solve the equation by the square root property.(7x + 4)2 = 4
A. 
B. 
C. 
D. 
Mathematics
Perform the indicated operations and simplify the result. Leave the answer in factored form.
÷ 
A. 
B. (x - 9)(x - 8)
C. 
D. 
Mathematics
Factor the four-term polynomial by grouping.xy + y + 5x + 5
A. (5x + 5)(y + 1) B. (x + 1)(y + 5) C. (x + 5)(y + 1) D. (x + 1)(5y + 5)
Mathematics