Solve by using substitution.
a =5b-4
-2a +10b = 5

Step-by-step explanation:

step 1

(a =5b-4)(-2a +10b = 5)  equation

step 2

a=5b-4  solve for a

-2a+10b=5

-2(5b−4)+10b=5

8=5

step 3

8=5 simplify

step 4

8+(-8)=5+(-8)  add -8

0=-3

There are no solutions

an altitude of 15,000 feet

step-by-step explanation:

the answer is 0.3175 hope that you ^w^

also you might actually want to put this picture up if you want people to solve it luckily i remember this question