Solve 2x+10y=-20 and - x+4y=28 by elimination

Which of the following expressions can be used to find the perimeter of the square? All sides are the same length. A. 4 x 9. B. 9 x 9. C. 9 + 9 + 9 + 9. D. 4 + 4 + 4 + 4.

Alex purchased a new car for 28,000. The cars value depreciates 7.25% each year. What will be value of the car 5 years after it is purchased? Round your answer to the newest dollar

Find the 50th derivative of y=cos2x? Find the 50th derivative of y=cos2x?

He coordinates of a polygon are (2, 3), (4,7), (8,5), and (7,2). If the polygon rotates 90° clockwise about the origin, in which quadrant will the transformation lie? What are the new coordinates?

A gallon of latex paint can cover 600600 square feet. Maria has a rectangular room whose dimensions are 2222 feet by 1616 feet, with 88 -foot ceilings. How many gallon containers of paint does she need to buy to paint two coats on each wall?

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 =