Find all real numbers in the interval [0, 2?) that satisfy the equation.2 cos2x =  cos x

A.
B.
C.
D.


Answer: D

Mathematics

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Find the product. Write the answer in standard form.(6 + 8i)(6 - 8i)

A. -28 B. 100 C. 36 + 64i2 D. 36 - 64i2

Mathematics

Solve the equation. logx = 1

A. 2
B.
C. 1
D.

Mathematics

Cream is approximately 22% butterfat. How many gallons of cream must be mixed with milk testing at 2% butterfat to get 23 gallons of milk containing 6% butterfat?__________ gallons

Fill in the blank(s) with the appropriate word(s).

Mathematics

The polar coordinates of a point are given. Find the rectangular coordinates of the point.(400, 130°) Round the rectangular coordinates to two decimal places.

A. (-257.12, 306.42) B. (306.42, 257.12) C. (306.42, -257.12) D. (-257.12, -306.42)

Mathematics