Answer:
x = 2, 16.
Step-by-step explanation:
x2 - 18x + 81 = 49
(x - 9)^2 = +/- 7
x - 9 = +/- 7
x = 7 + 9, -7 + 9.
x = 2, 16.
5:3 = 120 : x
72 girls and 48 boys
Hope that helps!
L = 3 + 2W
L + W = 54
3+2W + W = 54
6W = 54
W = 9ft
L = 3 + 2(9) = 21ft
The equation of a line in a point-slope form is
where m is a slope of the line and 
is the point that line is passing through.
If slope m=3, then the equation will be
The line is passing through the point (1,4), then the equation of the line is:
Answer: option A
Answer: 2x² - 8x + 9
Step-by-step explanation: this is our initial equation:
(4x² – 3x + 2) - (2x² + 5x - 7)
the subtraction sign which is to the left values is multiplying to the values into the parenthesis
(-) * (2x² + 5x - 7)
so this factor change the sign to every value into the parenthesis, then we get the following equation.
-2x² - 5x + 7
after this we get this final equation
4x² – 3x + 2 - 2x² - 5x + 7
then we resolve the equation with the similar values
4x² - 2x² = 2x²
– 3x - 5x = - 8x
+ 2 + 7 = 9
after this we place values in one equation, and we get the form simplified
2x² - 8x + 9
and this the last equation after resolve all the problems into the parenthesis.
