A = L * W
A = 75
L = W + 10
75 = W(W + 10)
75 = W^2 + 10W
W^2 + 10W - 75 = 0
(W + 15)(W - 5) = 0
W + 15 = 0
W = -15...not this one because it is negative
W - 5 = 0
W = 5 <=== width is 5 ft
L = W + 10
L = 5 + 10
L = 15 <=== length is 15 ft
Answer:
28
Step-by-step explanation:
1 in.=3.5
so 8×3.5=28
so it is 28 miles
Answer:
y = 7x
Step-by-step explanation:
Given that y varies directly as x the the equation relating them is
y = kx ← k is the constant of variation
To find k use the points given
k =
=
=
= 7
y = 7x ← equation representing the function
Answer:
5 to 12
Step-by-step explanation:
It works