Can you solve this using matrices by row operations

4x+y-2z=-6

2x-3y+3z=9

x-2y=0

Nhan is getting dressed. he considers 2 shirts, 3 pants and 3 different pairs of shoes. he chooses one of each of the articles at random. what's the probability that he'll wear his jeans but not his sneakers?

You have a large container of olive oil. You have used 22 and 1/2 quarts of oil. Twenty five percent of the olive oil remains. How many quarts of olive oil remain?

What is the percent of decrease from 8,000 to 400?

Does this equation represent a proportional relationship? y=x+1

4*62 = (4*n) + (4*2) how do I solve the problem?

find the total cost of a $55.00 dinner bill including 7% tax and 18% tip. how much change will you get back from $100.00

The number 4.124 has two 4s. Why does each 4 have a different value?

What is 3/10-2/5= Is it 1/2?

Solve for x 4x - 4 < 8

A zoo has 151515 Emperor penguins. The Emperor penguins make up 30%, percent of all the penguins at the zoo. How many penguins live at the zoo?