Answer:
1.1m
Step-by-step explanation:
Let L denote longer pipe and S denote shorter part
given:
L:S = 9:2
or L/S = 9/2
2L = 9S
S = (2/9)L-----(eq 1)
Also given:
L - 1.65 = 3S
L - 3S = 1.65 ----- (eq 2)
By substitution, sub eq 1 into eq 2
L - 3(2/9)L = 1.65
L - (2/3)L = 1.65
L [ 1 - (2/3) ] = 1.65
L/3 = 1.65
L = 1.65 (3) = 4.95 (substitute into equation 1)
S = (2/9)(4.95) = 1.1m
Combine the like terms
1.7m^2 + 2.5m^2 + 6.5n - 4n - n
4.2 m^2 + 1.5 n
The point-slope form of the equation through those points is
.. y -1 = (1/4)(x -12)
Multiply by 4 and subtract the left side to put into general form.
.. x -12 -4(y -1) = 0
.. x -4y -8 = 0
Add 8 to put into standard form
.. x -4y = 8
The answer is 492 feet.
If we picture the scenario as a right triangle, using trigonometric ratios, this problem can be solved.
cos 60° = x / 984
1/2 = x/984
x = 984/2
x = 492 feet
Answer:
63% maybe I'm not positive on that