The circumference of a circle is C=2πR, where R is the radius of the circle and π≈3.14.
So if we open the circumference of the circle into a straight line segment, the length of this segment is C=2πR≈2*3.14*R=6.28R
4 rotations mean 4 circumferences that is 4 segments of length 6.28R,
which makes a linear distance of 4*6.28R=25.12R
i: the radius of the smaller wheel is R=r, thus it covers a distance of 25.12r feet
ii: the radius of the smaller wheel is R=2r, thus it covers a distance of 25.12*2r=50.24r (feet)
50.24r is twice 25.12r, thus the larger wheel traveled Twice the distance of the smaller one.
Answer: the larger covered twice the distance of the smaller.
Answer:
Step-by-step explanation:
The inequality includes -53.
The interval notation is 
here, x = 2
putting the value of x in the equation we get:
6x-7y=-9
or, 6×2- 7×y=-9
or, 12- 7×y= -9
or, 7×y =-21
so, y = -3
Answer:
(-3,1)
Step-by-step explanation:
