Write an equation for each of the following problems and then solve. a number and 15 total 45

x+15=45

  -15 15

    x=30

30+15=45

Equation: x + 15 = 45

Solved: n = 30

Step-by-step explanation:

You can think of this as saying, "A variable plus 15 equals 45"

Now that you have the equation, you can solve for the variable (in this case it's "n"), using the inverse operation.

Step 1: Isolate n by subtracting 15 from both sides of the equation

Recommended: To check your answer, substitute the result you got for "n" into the original equation:

16.9 times 2.85

step-by-step explanation:

answer: the distance

step-by-step explanation:

to calculate the distance d of a line segment with endpoints (x1, y1) and (x2, y2) use the formula d (x2 x1)2 (y2 y1)2. to calculate the midpoint of a line segment with endpoints (x1, y1) and (x2, y2) use the formula