13. Ship A is 15 miles east of P and is moving west at 20 mph; ship B is 60 miles south of P and is moving north at 15 mph. At what rate is the distance between them changing after 1 hour? Is the distance

increasing or decreasing?

14. Two cars start at same time from the junction of two roads one on each road, with uniform speed v m. p.h. If the roads are inclined at 120°, show that the distance between them increases at the rates of√3 v. m.p. h.

the answer to the expression is 83

answerthe vertex form

step-by-step explanation:

the inequality is:

250c+180g≥950

step-by-step explanation:

let c denotes the number of days in a week   miyoko worked as a cryptographer.

and g denotes the number of days in a week she works as a geologist.

now we are given that she earns $250 for every day she works as a cryptographer,and earns $180 for every day she works as a geologist.

now miyoko's goal is to earn more than $950 this week.

hence, the inequality could be represented as:

250c+180g≥950

the answer is 24

step-by-step explanation: