Solve using linear combination

x-y=-7

x+y=7

A. (-7,0)

B. (7,0)

C. (0,7)

D. (0,-7)

Emily sells bracelets for $12 each. She wants to discount them so that they only cost $9. What percent will she need to discount her bracelets?

Is 90 ft greater or less than 32 yards

Find all zeros for h (x) = 2 (x-1) (x-2) (x+2)

The value of 2 in 2000 is 200 times the value of 2 in =

What do 5+5 mean divided by 2

There are two less nickels than dimes, and as many quarters, as nickels and dimes together. The total amount of money is $5.25. How many quarters, dimes, and nickels are there?

What type of angle has a measure of 90°

Factor as the product of two binomials. 81 + 18x + x^2

Write a real world situation for the function f (x) = 3 (1.06x) + 2. Be sure to identify all key features of the function as what they represent in your situation.

A one year membership to a gym Costa $725 the registration fee is $125 and the remaining amount la paid monthly define a variable then write and solve and equation to find how much new members pay each month