Slove the equation,-3x = 15 show ALL steps!

Step-by-step explanation:

Hi there! I'm glad I was able to help you!

There is only one step involved in solving this equation, which I'll explain in a minute. I want to focus on the equation itself, and break it down for you so you can understand the entire thing altogether.

When there is a variable beside a whole number, it means to multiply the already given whole number by the variable. We're also given what the equation is equal to, so it's much easier to solve for x!

We are given the equation below:

The opposite of multiplication is division. We are dividing to undo and cancel out the left side of the problem. When we solve the right side, it gives us our answer.

We have the correct answer, but sometimes if we are unsure, we can double check by replacing the variable by -5, and solving the equation as usual, and you can use a calculator for this part. If it comes out to be true, we're done!

I hope this helped you out! If you have any other questions, leave a comment below! I'd love to assist! :)

 See below

Step-by-step explanation:

4) You made an error in step 3

Step 1: -x³ + 22x² - 121x = 0

Step 2: -x(x² - 22x + 121) = 0

Step 3: -x(x - 11²) = 0       Error!

           -x(x - 11)² = 0        Correction

Step 4: -x = 0     (x - 11)² = 0

Step 5:    x = 0      x = 11

15) Your work is correct

    n = 8, n = -9      BOTH answers are correct

n = 8      Error!  

              n = 8, n = -9    Correction

18) The formula is: h(t) =at² + vt + h(0)

h(t) = -4.9t² + 24.5t + 117.6      option 3

19) Now that you have the correct equation, you can use the quadratic formula to solve for t

t = -3, t = 8

Since time cannot be negative, t = -3 is not valid

t = 8    option 1

20) It is given that h(t) = 49

Equation: 49 = -4.9t² + 24.5t + 117.6

                 0 = -4.9t² + 24.5t + 68.6

Use the quadratic equation to solve: t = -2, t = 7

Since time cannot be negative, t = -2 is not valid

t =7