The definition of parallel lines requires the undefined terms line and plane, while the definition of perpendicular lines requires the undefined terms of line and point.
X + y = 3
2x + 4y = 8
This is a system of equations. You can solve it using elimination. Start by multiplying the top equation by -2.
(x * -2) + (y * -2) = (3 * -2)
-2x - 2y = -6
Now add that and the bottom equation. This will cancel out x.
-2x - 2y = -6
+ 2x + 4y = 8
-----------------------
2y = 2
Solve for y.
2y = 2
y = 2/2
y = 1
Now plug 1 in for y in the first equation.
x + y = 3
x + 1 = 3
Solve for x.
x + 1 = 3
x = 3 - 1
x = 2
So x = 2 and y = 1.
The actual fountain is 6 ft tall.....1 ft = 12 inches...so 6 ft = (12 * 6) = 72 inches
72/27 = 2 2/3....u have a scale factor of 2 2/3 (or 8/3)
so the diameter will be :
63 * 2 2/3 =
63 * 8/3 =
504/3 =
168 inches.....12 inches = 1 ft...so 168 inches = (168/12) = 14 ft <==
<span>7/10 = 0.7
hope it helps</span>
