The rectangle below has an area of x to the second power minus x minus 72 square meters and a length of x plus 8 meters. what expression represents the width of the rectangle?

Step-by-step explanation:

we know that

The area of rectangle is equal to

where

L is the length of rectangle

W is the width of rectangle

we have

substitute

Solve the quadratic equation in the numerator

The formula to solve a quadratic equation of the form

is equal to

in this problem we have

so

substitute in the formula

so

substitute in the expression of W

simplify

since the airplane is moving with constant speed then the distance travelled can be calculated by x=u*t

in km/h would be:

x=640*3.5=2.240 km

in m/s would be:

u=640 km/h= 640.000 m/h =640.000/ 3600 m/s =177.8 m/s

t= 3.5 h= 3.5 * 3600 s=12.600 s

then x=u*t= 177.8*12.600= 2.240.280 m

i would pic false cause it goes down towards negative

step-by-step explanation: