Answer:
x=13
Step-by-step explanation:
isolate the x by adding4 to each side of the equation
x - 4 = 9
+ 4 =+ 4
and then the -4 cancels out and you get x = 13
I hope this helps :)
Answer:
it will be 9 inches my guy
Step-by-step explanation:
Answer:
<u>b = 10</u>
Step-by-step explanation:
Divide 20 by 2 to get <em>b</em> by itself:
<em>20/2 = b</em>
<u><em>10 = b</em></u>
<em>MARK AS BRAINLIEST!</em>
There were 200 students that attend the dance.
The radicand of a quadratic is b^2-4ac.
If it is greater than zero, there are two real solutions
If it is equal to zero, there is one real solution
If it is less than zero, there are no real solutions (though there are two imaginary solutions)
In this case the discriminant is 256-2160 so it is less than zero.
Therefore there are no real solutions, though there are two imaginary solutions, specifically (16±i√-1904)/18