Need substitution method. the system of equations : y= 35 + 5x , y=100 - 8x . in how many minutes will the tanks contain the same amount of water ?

We can substitute the expression for y from the first equation into the second equation, which just means setting the two equations to be equal:

35 + 5x = 100 - 8x

5x + 8x = 100 - 35

13 x = 65

x = 5

That's 5 minutes presumably, at which time each tank has 35+5(5)=60 units of water.

hi there!

the answer to this question is d: 35

step-by-step explanation:

5 to the power of 2 is 25

2 multiplied by 5 is 10

then you add the 2 numbers and you get 35