Parallel lines has equal slopes.
Line y = (-1/2)x - 8 has a slope of -1/2.
Required equation is y - 4 = (-1/2)(x - 10)
y = (-1/2)x + 5 + 4
y = (-1/2)x + 9
Write the system in augmented-matrix form:
Multiply through row 1 by 1/2:
Add -1(row 1) to row 3, and add -5(row 1) to row 2:
Swap rows 2 and 3:
Add -7(row 2) to row 3:
Multiply through row 3 by -1/42:
Add 5(row 3) to row 2:
Add -1(row 2) and -2(row3) to row 1:
So the solution to the system is
Essential h(40) is the equivalent of when y=40. Together, when y=40 x=1700, kind of like a coordinate pair (40, 1700).
-E :)
By definition, the circumference is given by:
C = 2 * pi * R
Where,
R: Radio
Substituting values we have:
C = 2 * pi * (27/2)
C = 84.82300165 in
Round to the nearest whole number:
C = 85 in
Answer:
The circumference of the wheel is:
B. about 85 inches