Solve equations by substitution and determine whether there is one solution, no solution, or infinite solutions
-2.6x+2.5y=-24.1
5.2x-5y=49.2

With finding limits of multi variable !

Find the common ratio of the sequence. -4, 8, -16, 32, a: -12b: -2c: 12d: -1/-2

The angle of depression from the top of the tree to the tip of the shadow is 25°. find the height of the tree to the nearest tenth. a. 16.8 feet b. 18.2 feet c. 23.4 feet d. 39.7 feet