Answer:
Step-by-step explanations:
<h2>
Length = 3m</h2><h2>
Width = 5m</h2><h3>
State where x is accordingly.</h3><h2>
</h2>
The length of a rectangle is seven less than twice the length of its width.
L = 2W - 7
A = W * L
A = 15
15 = W * L
Substitute the L in terms of W
15 = W * (2W - 7)
15 = 2W^2 - 7W
2W^2 - 7W - 15 = 0
Factorise:
(2W + 3) (W - 5) = 0
Solve for W:
2W + 3 = 0
2W = 0 - 3
2W = 3
W = 3/2
W = 1.5
W - 5 = 0
W = 0 + 5
W = 5
Use the original equation to find L:
L = 2W - 7
L = 2(5) - 7
L = 10 - 7
L = 3
L * W = 15
3 * 5 = 15
I am pretty much sertan that the answer is B. X = 9.
Hope this helps!!
The painter should charge you $3,250 to paint that house.
Missing info:
A painter charges by the square foot and charges you $1,875 to paint a 750 square foot rental house.
y = kx
y = total payment to painter
x = number of square foot painted
k = unit price of 1 square foot painted
Given: y = 1875 ; x = 750 ; k = ?
k = y / x ⇒ k = 1875/750 ⇒ k = 2.50 per sq. ft
y = ? ; x = 1300 ; k = 2.5
y = kx
y = 2.5 * 1300
y = 3,250