Answer:
Step-by-step explanation:
Add 9x to both sides:
Simplify:
Solve with the quadratic formula:
For a quadratic equation of the form the solutions are:
For
The solution to the quadratic equation are:
Hope I helped. If so, may I get brainliest and a thanks?
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Answer: х=3.
Step-by-step explanation:
А point is missing here: determining the allowable values of x for this equation.
1. Consider the right side of the equation:
The root expression 2x+3 must be greater than or equal to 0.
2x+3≥0
2x≥-3\ |:2
x≥-1,5.
2. Consider the left side of the equation:
the left side of the equation must be greater than or equal to 0.
x≥0.
We get x≥0. ⇒
х=3 ∈ х≥0
х=-1 ∉ х≥0.
When you have parallel lines cut by a transversal, alternate interior angles are congruent.
The 80 degree angle and the (20 + x) angles will be congruent.
Therefore, x = 60 degrees.
I believe yo meant c=2pir but ok
c=2r
divide both sides by 2
c/2=r
if you forgot tthe pi
c=2pir
divide by 2pi
c/(2pi)=r