Answer:
The actual formula for the circumference is 2rpi. But the radius multiplied by 2 is the diameter. They are both right. Plug it the values in the formul and you will see. Sry if it doesn't make sense
Step-by-step explanation:
To find the distance traveled by a person riding once around the merry-go-round, you need to calculate the circumference. The correct calculation is based on the radius, which is 4 feet. The distance around the edge is about 8π feet.
To find the distance traveled by a person riding once around the merry-go-round, we need to calculate the circumference. The circumference of a circle can be calculated using either its radius or diameter. Clare's statement is correct: the radius of the merry-go-round is 4 feet, so the distance around the edge is about 8π feet.
Using the diameter of the merry-go-round, Andre's statement is incorrect. The formula for the circumference using the diameter is C = π * d, where d is the diameter. In this case, the distance around the edge is about 8π feet, not 4π feet as Andre suggested.
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b. x2 - 4x - 2
c. 3x2 - 4x - 2
d. x2 + 2x - 10