Answer:
45 is the answer
Step-by-step explanation:
Answer:12 43 am
Step-by-step explanation:
Find the equation of the line connecting (0, 5) and (-2, 0).
As we go from the first point to the second, x decreases by 2 and y decreases by 5. Thus, the slope of this line is m = rise / run = -5/(-2), or 5/2.
Starting with the general equation of a line in slope-intercept form, y = mx + b, substitute the knowns as appropriate to determine the value of b:
y= mx + b => 5 = (5/2)(0) + b. Then b = 5, and the desired equation is
y = (5/2)x + 5.
Check this! If we subst. the coordinates of (-2,0) into this equation, is the equation true?
0 = (5/2)(-2) + 5
Yes. So, y = (5/2)x + 5 is the desired equation.
Answer:
-2.23
Step-by-step explanation:
Calculate the length of the outside of the tire, which is the circumference of the tire.
Circumference = 2 x radius x PI
Circumference = 2 x 0.45 x 3.14 = 2.83 meters.
It travels 2.88 meters per second.
Divide the circumference by the amount of travel:
2.83 / 2.88 = 0.98 seconds to make one revolution.