Are these right triangles or not?
(see attachment)

1. 8-1(2)2() = 8+72 = 802. -() = 203. - 1/18xy

The answer is 0.9660

1. here’s the expression: 5b+2a-g-b-5asimplify it to: 4b-g-3a2. first, since you gained 5 crates of bananas, i multiplied +5 by b for bananas to represent the amount of bananas earned. this is where i got 5b. next, you got 2 more crates of apples back, so you gained 2 crates of apples. this can be written as +2 multiplied by a (2a) to represent the amount of apples gained. after that, you dropped a crate of grapes which caused you to loose some. this must be written as negative or subtraction, since you are loosing grapes, not gaining any. so, i wrote it as -1 multiplied by g to get -g, to represent the grapes lost. next, you sold, or lost, a crate of bananas. this also must be written as subtraction, so i wrote -1 multiplied by b to get -b for the amount of bananas lost. after that, i sold, or lost, 5 crates of apples. again, i had to write this in subtraction form. so, i multiplied -5 by a to get -5a for the amount of apples lost. after all that, i combined it into the expression 5b+2a-g-b-5a. finally, i had to simplify this expression by combining like terms. 2a and -5a are like terms, so i combined them to -3a. 5b and -b are like terms, so i combined them into 4b. -g has no like terms, so i left it alone. at last, i combined that into my final expression: 4b-g-3ahope this ! comment if you have any questions! : )