Solve the system by substitution.

-x+8y=20

x=y+8

a woman buys a pair of shoes at a sale. she pays $45, saving $15 on the normal price. what is the the percentage discount of the pair of shoes?

Theodore says there are two weeks five days left in the year. How many days are left in the year?

The function f (x) = is translated up 4 units. Which equation represents the translated function?

Evaluate the surface integral S F · dS for the given vector field F and the oriented surface S. In other words, find the flux of F across S. For closed surfaces, use the positive (outward) orientation.

What distance was used to define the astronomical unit (AU)

How do you multiple the following (x-8) (x-7)

What is this 3*0.33 I don't no

Angle angle B is half the size of angle a the measure of angle C is equal to 1 less than 2 times the measure of angle B the sum of the angle a and angle B is 114 can the three angles form a triangle why or why not

Which number makes both number sentences true? 8x2x4=8x (? x4) 4x6 x2 = (4x6) x?

An arithmetic sequence is defined by the general term tn = 19 - (n - 1) 18, where n ∈N and n ≥ 1. What is the recursive formula of the sequence?