the dimensions of a rectangle can be expressed as x-3 and x+8. If the area of the rectangle is 42 square feet. Find the dimensio
1 answer:
We know that
the area of a rectangle=length*width
let
length=x-3
width=x+8
area=42 ft²
so
42=(x-3)*(x+8)----------> x²+8x-3x-24=42--------> x²+5x-66=0
using a graph tool-------> to resolve the second order equation
see the attached figure
the solution is
x=6
hence
length=x-3------> 6-3-----> 3 ft
width=x+8 ------> 6+8----> 14 ft
the answer is<span>
the dimensions of the rectangle are 3 ft x 14 ft</span>
You might be interested in
Answer at very bottom of picture above
if explanation need comment
Answer:
I III and IV
Step-by-step explanation:
Answer:
2
Step-by-step explanation:
Answer:
counted down
Step-by-step explanation:
it was counting up and went down by couting down in 2
Answer:
8*12=96
Step-by-step explanation: