Is 81x squared minus 1 a perfect square

Simplify the trigonometric expression sin (4x) + 2sin (2x) using Double-Angle Identities. A. 8sin (x) cos^3 (x) - 8sin (x) cos (x) B. 8sin (x) cos^3 (x) + 8sin (x) cos (x) C. 8sin (x) cos^3 (x) - 4sin^3 (x) cos (x) D. 8sin (x) cos^3 (x)

Milly wrote the quadratic equation 0 = - x2 + 4x - 7 in standard form. What is the value of c in her equation?

To qualify for the championship, a runner must complete the race in no more than 50 minutes. Use t to represent the time in minutes of a runner who qualifies for the championship.

What is an equation for the line parallel to y=-3x+7.

Of the 60 books on a bookshelf, 24 are nonfiction. what percent of the books are nonfiction

What expression can be use to write the distributed property of 3x+15=?

The values in the table represent the graph of a continuous function. Which interval must contain an x-intercept? X Y -3.1 - 1.85 -2.7 - 0.84 -2.3 - 0.09 -1.9 0.44 -1.5 0.79 -1.1 1.00 -0.7 1.10 -0.3 1.13 0.1 1.13 A. - 3.1 < x < - 2.7 B. - 2.

18, 24, 26, 30 Mean: Median: Range:

How do you find the slope and the y-intercept if the y = 1

Maggie found the area of the irregular figure by dividing it into a triangle and a rectangle. Her work is shown below.