In science experiments, the temperature of a substance is changed from 42 ºF to - 54ºF at an average rate of - 12 degrees per hour. Over how many hours does the change take place?

A golfer hit two shots for a total of 375 yards. her first shot was 240 yards. how far was her second shot. let s = length of her second shot.

A student is trying to solve the system of two equations given below: Equation P: x + y = 8 Equation Q: 2x + 5y = 24 Which of the following steps can be used to eliminate the x term? A. 2 (x + y = 8) B. - 2 (x + y = 8) C. - 1 (2x + 5y = 24) D.

Find the least common denominator for these two rational expressions - 4/a^2 and 5/3a

Selena's family went on a trip. The total hotel bill was $659. The cost of the airfare was $633. Use Mental Math to find the total cost for the hotel and the air Fare.

What would be the next number in the following series?2 ... 3 ... 6 ... 11 ... 18 ...?

If 48 men have ration for 16 days how long will the food last if a reinforcement of 16 men arrived

Explain how you know wether to choose grams or kilograms when measuring mass. Name an object you would measure each unit.

16:07:48 marks: Question: 1/20 The graph of which equation would be a circle with a center at (2.3) and a radius of 7? A. (x + 2y = (y - 3) = 7 B. (x - 2) = (y + 3) = 7 C. (x - 2y + (y + 3) 2 = 49 D.

Samuel wants to estimate what 5843 x. 00243 is. What should his first step be?

A jar contains 2 green marbles, 4 blue marbles, 3 yellow marbles, and 2 black marbles. A marble is chosen at random from the jar and replaced. Then a second marble is chosen at random.