First, the ratio is 3:5. which means 3 redfish for every 5 bluefish. Since there are 20 bluefish, that means that is 4x more than 3:5. The total number of redfish are 12.
Let
x--------> the total length of the water main
we know that
the number of 20 ft pipes is x/20
and
the number of 18 ft pipes is x/18
Since they differ by 14 pipes,
we have the equation
x/18 - x/20 = 14
Solve for x (by canceling fractions)
20x - 18x = 14*18*20
x = (14*18*20)/2
x = 2,520 ft
therefore
the answer is
the total length of the water main is 2,520 ft
Answer:
a line parallel to this line would be y=3
Step-by-step explanation:
parallel lines have the same slope, but different y-intercepts.
the slope of the line that passes through (4, 9) and (11, 9) is 0.
the equation is y = 9.
and that is identical to y = 3, because they both do not have a slope; they both form straight horizontal lines across the graph.
(ab)n=anbn......................................