Find the rate of change of the area of a square with respect to the length z, the diagonal of the square. what is the rate when z=2?

True or False cos^2x = (1-cos2x) / 2

Tammy walked 8500 steps according to her ap. If each of her steps are 20 inches long, how many miles did she walk? Round your answer to the nearest 10th. (hint: 1 ft = 12 in; 1 mile = 5280 ft)

What's the perimeter of a rectangle with length 12 m and width 5 m? A. 49 m B. 34 m C. 17 m D. 60 m

Juan is creating a rectangular garden in his backyard. The length of the garden is 20 feet. The perimeter of the garden must be at least 70 feet and no more than 86 feet.

Steve had 7 more than twice as many quarters as dimes. if the total value of her coins was $10.15, how many of each kind of coin did she have?

I need these answers

Their Anywhere plan charges 20 ¢ per check whereas their Acu-checking plan costs $1.43per month plus 9¢ per check. For what number of checks per month will the Acu-checking plan cost less?

Find the difference (10j-7) - (-9j+2)

X over 15 = 10 over 20. Solve.

4. Here are the ingredients needed to make 12 shortcakes. Shortcakes Makes 12 shortcakes 50 g of sugar 200 g of butter 200 g of flour 10 ml of milk Liz makes some shortcakes. She uses 25 ml of milk. (a) How many shortcakes does Liz make?