Answer: $11.2
Step-by-step explanation:
Given
Cora bought 90 feet cable for
So, the price of a foot is the division of rate and length
for additional 40 feet, the cost is
Thus, Cora pays $11.2 for extra 40 feet
Answer:
length;12cm
L speed
m² -12 = m
m² = m + 12
m =
y = 6/5x + 8
m = 6/5
y - y1 = m (x - x1)
y - (-2) = 6/5(x - 5)
y + 2 = 6/5 x - 6
3x + 50 = 6x - 10
Bringing like terms on one side
50 + 10 = 6x - 3x
60 = 3x
60/3 = x
20 = x