Tell how to find 81-36 using mental math

The product of 2 and the sum of a number and 8 is equivalent to 16 math form

let f=cos^2x and g=sin^2x which of the following lie in the space spanned by f and g a) cos2x b) 3+x^2 c) 1 d) sinx e) 0 ... ?

In preparation for a storm, the town council buys 13,750 pounds of sand to fill sandbags. Volunteers are trying to decide whether to fill bags that can hold 25 pounds of sand or bags that can hold 50 pounds of sand.

What type of angle is formed by a clock's hands when it is 3; 00

The mean grade on the last Geometry test was 78. If Kate scored a 90 and her z-score was 2.5, find the standard deviation for the test.

Penelope wants to buy two necklaces, one for his sister and one for herself. The necklace for her sister cost $42.00, and the necklace for herself costs $28.00. The sales tax on the purchases is 8%.

Which of the following expressions is true? A. 43 • 45 < 412 B. 52 • 53 > 55 C. 32 • 34 = 32 D. 52 • 54 = 58 I think that it's C, but I want to make sure.

7. What are the factors of x2 - x - 30? a. (x + 1) (x - 30) b. (x + 5) (x-6) c. (x + 6) (x - 5) d. (x - 1) (x + 30)

Jacob Needs to graph - 6 2/5 on a horizontal nmber line. Should he Graph it to the left or right side of - 6?

Which statements describe a parallelogram that must be a rectangle? Select each correct answer. parallelogram with opposite sides congruent parallelogram with a right angle parallelogram with congruent diagonals parallelogram with perpendicular