Answer:
x=40
Step-by-step explanation:
Divide both sides of the equation by 4
0.2x-5=3
Move the constant to the right-hand side and change its sign
0.2x=3+5
Add the numbers
0.2x=8
Divide both sides of the equation by 0.2
x=40
The length of the hypotenuse is 10 feet
9.79 x 10^5 in standard notation is 979,000.
He put the comma in the wrong place so he has to replace his comma