Answer:
x=9
Step-by-step explanation:
Area of a rectangle = length * width
84 = (x-2) * ( x+3); distribute
84 = x²+3x-2x-6; combine like terms and subtract 84 from both sides
0 = x² +x -90
if x= 9 will have 9² +9 -90= 81 +9 -90 = 90-90 = 0 so x=9 works
if x= 10 will have 10² +10 -90 = 100-80= 20 ≠0 so x= 10 does NOT work
if x= -10 and x= -9 will not make sense because we can NOT have a negative measurement
4 meters
I think It´s C
Answer: v=-81.92
Multiply both parts of the equation by 8:
Draw a vertical line at the number 4 on your x axis positive side which is x=4
Then anything on the left of this line you just created at x=4 will be less than 4. But since your inequality is x less than/equal to 4 it includes 4 as well.
