a roller coster can accomodate 18 riders in 8 minutes .Complete the table with equivalent ratios savas realize

The circumference of a circle is 5 pi cm. what is the area of the circle?

Which of the following are accepted without proof in a logical system? check all that apply.

Write a polynomial function f of least degree that has rational coefficients, a leading coefficient of 1, and the given zeros. 3, 4+2i, 1+(sqrt)7 the answer is supposed to be: f(x)=x(^5)-13x(^4)+60x(^3)-82x(^2)-144x+360 what am i doing wrong?