Simplify. Assume that any variables are positive.

A.
B. 7
C.
D.


Answer: D

Mathematics

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Identify which graph matches the equation.f(x) = -4x2

A.

B.

C.

D.

Mathematics

Express the sum or difference as a product.cos  + cos 

A. 2 sin 2x sin 
B. 2 sin 2x sin x
C. 2 cos 2x
D. 2 cos 2x cos 

Mathematics

Solve the problem.A football team gained 26 yards on one play, lost 40 yards on another, and gained 37 yards on the last play of the first half. They had already gained 224 yards during the half. What was the total yardage gain for the first half?

A. 247 yd B. 287 yd C. 201 yd D. 327 yd

Mathematics

Simplify.9 + 2 - 2

A. 19
B. 9
C. 8
D. -8

Mathematics