How to use mental strategy to add and subtract

Solve for x. 8x - 4 = 2x - 3

A city park is shaped like a right triangle. its base is 20 yards and its depth is 48 yards. what is the area of the park?

Re-write the quadratic function below in Standard Form y = 9 (x - 1) (x + 7)

Kwan wants to place a fence around a circular flower garden in his yard. If the radius of the garden is 4 yards, what is minimum amount of fencing that Kwan needs, to the nearest tenth of a yard A. 8.0 B. 12.6 C. 25.1 D. 50.2

For the function shown below, find f (3) : f (x) = 2x^4-8x^2+5x-7

Select the angle that correctly completes the law of cosines for this triangle. 72 + 252 - 2 (7) (25) cos ___ = 242 A. 180° B. 90° C. 16° D. 74°

What is 8/9 as a percentage

A right triangle has one leg with a length of 10 m and another left with a length of 12 m. What is the length of the third side of the triangle? OA) 22 meters OB) 15.6 meters OC) 6.6 meters D) 2 meters

Write each decimal as a fraction or mixed number in simplest form. 1.) 0.83 2.) 3.75 I need the answer to these two, for the 0.83 I got 83/100

How much is 3/4 cup & 3/4 cup =