A rectangle's length is 4 more than twice its width. Its area is 240 square centimeters.
Complete the work to find the dimensions of the
rectangle.
w(2w + 4) = 240
2w2 + 4w = 240
2w2 + 4w - 240 = 0
2(w + 12)(w - 10) = 0
What is the width of the rectangle?
2w + 4 A = 240 cm2
What is the length of the rectangle?
w

Step-by-step explanation:

width = w

Length = 2w + 4

Area = 240 sq. cm

length * width = 240

(2w + 4) * w = 240

2w *w + 4*w = 240

2w² + 4w = 240

2w² + 4w -240  = 0

2(w²+2w - 120) = 0

2(w² + 12w - 10w - 10*12)=0

2 (w[w + 12] - 10[w + 12] ) = 0

2 (w + 12) (w-10) = 0

Ignore (w + 12) because measurement wont be in negative value

w - 10 = 0

w = 10

Width = 10 cm

length = 2w + 4 = 2*10 + 4 = 20 + 4

Length = 24 cm

Width = 10

Length = 24

Step-by-step explanation:

correct choice is b

step-by-step explanation:

when you calculate the average rate of change of a function, you are finding the slope of the secant line between the two points. for the function the average rate of change from point to point can be calculated as

to find the average rate of change from day 2 to day 10, note that at day 2, 8 houses were sold, so a(2,8) and at day 10, 2 houses were sold, so b(10,2). thus,

answer:   y=2x-3

step-by-step explanation: