Answer:
B. Exactly one solution
Step-by-step explanation:
You can add (4x -8) to both sides:
5x +8 -7x +(4x -8) = -4x +1 +(4x -8)
Collect terms
2x = -7
x = -7/2 . . . . . divide by 2. One solution.
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As soon as you determine that the x-coefficients on the left and right are different, you know there is exactly one solution.
On the left, the coefficient of x is 5-7 = -2; on the right it is -4.
The formula for the area of a square with sides of length x is A = x2 so
x2 = 400 is the equation
This equation has 2 solutions, namely x = ±√400 = +20 or -20
The negative solution does not make sense because a length cannot be less than 0.
The total length needed to go around the painting is the perimeter of the square, which is
P = 4*x = 4*20 = 80 inches
Answer:
162
Step-by-step explanation:
6+3 = 9
k = 18*9
k = 162
Answer:
y=13.3333...
x=6
Step-by-step explanation:
y=20/1.5
y=13.3
x=9/1.5
x=6
