100-49r^2=

Solution for 100-49r^2= equation:

Simplifying
100 + -49r2 = 0

Solving
100 + -49r2 = 0

Solving for variable 'r'.

Move all terms containing r to the left, all other terms to the right.

Add '-100' to each side of the equation.
100 + -100 + -49r2 = 0 + -100

Combine like terms: 100 + -100 = 0
0 + -49r2 = 0 + -100
-49r2 = 0 + -100

Combine like terms: 0 + -100 = -100
-49r2 = -100

Divide each side by '-49'.
r2 = 2.040816327

Simplifying
r2 = 2.040816327

Take the square root of each side:
r = {-1.428571429, 1.428571429}