a) x=z-y/a-b
b) x=a-b/z-y
c) x=z-y/b-a
d) x=y-z/b-a

Ageologist had two rocks on a scale that weighed 4.6 kilograms together.rock a was 0.5 of the total weight.how much did rock a weigh?

The interior angles formed by the side of a hexagon have measures of them up to 720° what is the measure of angle a

Gabriel determined that his total cost would be represented by 2.5x + 2y – 2. his sister states that the expression should be x + x + 0.5x + y + y – 2. who is correct? explain.