A hall 200 feet in length is to be designed as a whispering gallery. If the foci are located 20 feet from the center, how high will the ceiling be at the center

What term makes it inconsistent y=2x - 4

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.

Angles r and s are complementary. the measure of angle r is 31 degrees. which equation can be used to find angle s?