4x+5=45 (Show work to get brainliest)

A) 5
B) 10
C) 15
D) 20

x = 10

Step-by-step explanation: To solve for x in the equation you see here, our goal is to get x by itself on one side of the equation.

Our first step will be to isolate the term containing x which in this case is 4x. To isolate 4x, we have to get rid of the +5 by subtracting 5 from both sides of the equation.

On the left, +5 -5 cancels and we're left with 4x. On the right, 45 - 5 simplifies to 5.

So our equation now reads 4x = 40.

To get x by itself since it's being multiplied by 4, we just divide both sides of the equation by 4. On the left, the 4's cancel and we're left with x. On the right, 40/4 simplifies to 10 so our answer is x = 10.

10.416 meters per second

step-by-step explanation:

distance=1 00 meters

time= 9.6 seconds in decimal form or 9 3/5 as a mixed number

average speed= 100/9.6

=10.416 meters per second or 10 52/125 as a mixed number.