Two airplanes leave an airport. Thirty minutes later, an observer on the ground sees the first plane with an angle of elevation measuring 56° and an altitude of 9,000 m. At the same time, the second plane has an
angle of elevation of 36° (in the opposite direction) and an altitude of 10,000 m. Find the air distance between the two planes, rounded to the nearest kilometre. Draw a picture to help you solve. [4]

Matilda and kathryn went on different road trips over spring break.the equation below represents the number of miles matilda drove in x hours.y = 60xthe table below shows the number of miles kathryn drove in x hours.time(in hours)distance(in miles)114228342456who drove at a greater speed? a. matilda drove at a greater speed.b. matilda and kathryn drove at the same speed.c. kathryn drove at a greater speed.d.there is not enough information to determine their speeds

You are a clerk at convenience store. a customer owes 11.69 for a bag of potatoes chips. she gives you a five dollar bill. how much change should the customer receive?

What is the answer to this question? i'm a bit stumped. also how do i do it? 5(x - 4) = 2(x + 5)