Acruise ship travels from port cassett north at speed of 34 km/h for 2.5 hours. then it turns 90° and travels west at 30 km/h for 7.3 hours. when it reaches green sea island how far is a ship from port cassett? explain

Prove that the value of the expression 7^8–7^7+7^6 is divisible by 43.

At a pizza shop 70% of the customers order a pizza 25% of the customers order a salad and 15% of the customers order both a pizza and a salad if s customer is chosen at random what is the probability that he or she orders either a pizza or a salad

Find the solution of this system of equations -7x+y=-20 9x-3y=36