Mamadou has two summer jobs. During the week he works in the grocery store, and on the weekend he works at a nursery. He gets paid $17 per hour to work at the grocery store and $18 per hour to work at the nursery. How many total hours does he work if he does 12 hours at the grocery store and 11 hours at the nursery? How many total hours does he work if he does g g hours at the grocery store and n n hours at the nursery?

b

step-by-step explanation:

a difference is the result of subtraction. while each of these expressions has subtraction in it, a difference will be the result when subtraction is the last operation applied in the order of operations for the expression. this means subtraction must be outside of the parenthesis. only b has this.

d) by the cross product property, ab^2 = bc multiplied by ad

step-by-step explanation:

we are given

in the given triangle abc

angle a is 90° and segment ad is perpendicular to segment bc

we can see that

triangle(abc) and triangle(abd) are similar because they have common side and same angle (90 degree)

so, triangles(abc) and abd are similar

since, they are similar

so, the ratio of their sides must be equal

we get

now, we can cross multiply

and we get

so, this could be step to prove it