Simplify the expression by using a double-angle formula or a half-angle formula.

7cos^2 (theta/9) - 7sin^2 (theta/9)

sin (theta/6) cos (theta/6)

Explain the meaning of the exponent 3 in the algebraic expression (x+y) ^3

Find the simplified form of (t^4/10y^4) ^-4

Find the perimeter of the figure

Ella created a board game that instructs players to roll a standard 6-sided number cube and pick a marble out of a bag without looking. On Colin's turn, the bag contains 1 red marble, 1 blue marble, and 1 green marble.

How might the graph be redrawn to emphasize the difference between the cost per doctor visit for each of the three plans? The scale on the y-axis could be changed to 0-100. The scale on the y-axis could be changed to 25-40.

Bruce wants to make sure that each tiger at the zoo has 1,000 square feet of space. He wants to write an equation to represent the relationship between the number of tigers, t, and the number of square feet of space, f.

What is 120 times 250

The circumference of the earth is approximately 24,901 miles. The circumference of the earth's moon is about 72.76% smaller than the earth's circumference. What is the approximate radius of the earth's moon? A. 1,079.55 miles B. 6,783.03 miles c.

What greater than. 375?

A triangle inscribed in a semicircle identified as a what triangle?