What is that three effect cost per minute (the total cost divided by the number of minutes to talked) of talking eight hours? Of talking 20 hours?

Rewrite the hyperbolic equation 4y^2 -9x^2 +54x-8y-113=0

The marked price of an article is 25% above its selling price and the cost price is 30% less than its marked price . find the discount percent and gain percent. only a brainlest can solve it i will mark you brainlest

Lines b and c are parallel. what is the measure of 2? m2 = 31° m2 = 50° m2 = 120° m2 = 130°