X + 3y – 2z = 3
-x – 2y + z = -2
2x – 7y + z = 1

Use Gaussian Elimination to solve.

(1,0,-1

Step-by-step explanation:

Brainiest plz ?  

b. 1.25 hr

step-by-step explanation:

if you have a constant speed of 60 mph, then you have a ratio between 60 mi. to 1 hr. dividing both sides by 60 we get the ratio

1 mi. to

then mult. both sides by 75 we get the ratio

75 mi. to

simplifying we get

75 mi. to

or 1.25 hr.