A fraction is equivalent to 5/8. Its denominator and numerator add up to 91. What is the difference between the denominator and numerator of this fraction?

Asmall business produces and sells balls. the fixed costs are $20 and each ball costs $4.32 to produce. each ball sells for $8.32. write the equations for the total cost, c, and the revenue, r, then use the graphing method to determine how many balls must be sold to break even.

Which is greater, 7 p 5 or 7 c 5? 7p5 7c5

If cos(2x) = tan^2(y), show that cos(2y) = tan^2(x).