Mira picked two numbers from a bowl. The difference of the two numbers was 4, and the sum of 1/2 of each number was 18. The system that represents Mira’s numbers is below.
x – y = 4
1/2x + 1/2y = 18
Which two numbers did Mira pick?
10 and 8
18 and 4
20 and 16
40 and 32

One of the complementary angles is 4 degrees mor than the other. find the angles (recall that complementary angles are angles whose sum is 90 degrees.) which of the following can not be used to solve the problem if x represents one of the angles? a. 2x-4=90 b. 2x+4=90 c. x+4=90