Which expression is equivalent to cos (3x) sin x?

sin2x+sinx

sin2x-sinx

1/2 (sin 4x+sin 2x)

1/2 (sin 4x-sin 2x)

In 1971 there were 294,105 females participating in high school sports. Since then that number has increased by 8.5% per year. Estimate the number participating in 2015. Round to the nearest whole number.

Is 7/8 a whole number, integer or rantonal number

Which is a valid prediction about the continuous function f (x) ?

When a number is decreased by 79%, the result is 13. What is the original number to the nearest tenth?

The lengths of the side of a triangle are 5 cm, 12 cm, and 13 cm. Find the lengths, to the nearest tenth, of the segments into which the bisector of each angle divides the opposite side.

A student is given three triangles and must determine which triangles are congruent. The student is also told that C = D = Y. Which of the following statements is true? Justify your answer.

Antonio read 15 books over the summer at the end of july he had read 4/5 of the books how many books has he read

Find the measure of each minor arc formed by a regular octagon inscribed in a circle? Refer to a regular octagon.

Find all positive integer values of c that make x^2+6x+c factorable

Which activity did artists do during the enlightenment?