Arectangle has a length that is 10 less than 3 times the width. if the rectangle has an area of 8 square feet, what is the width of the rectangle? enter your answer as the correct value, with the correct unit of measurement, like this: 42 meters be sure to use the correct units from the context of the problem.

Step-by-step explanation:

let width w=x

length l=3x-10

then area= w*l=x(3x-10)=8

3x²-10x-8=0

3x²-12x+2x-8=0

3x(x-4)+2(x-4)=0

(x-4)(3x+2)=0

x=4,-3/2(rejected)

width=4 feet

c.

step-by-step explanation:

she should of added 9^2 and 12^2. that is because it is a^2+b^2=c^2. c^2 is the hypotenuse and should always be bigger than the other two numbers. which is why she should of added 9 squared and 12 squared together instead of 15 squared.

0,0

step-by-step explanation: