Explain why a change from 20 to 40 is 100% increase, but a change from 40 to 20 is a 50% decrease.

If a soldier lifts a 2-kg counterweight 0.5 meter, how much work is done?

Derek ms car average 30 miles per gallon. how much gas will he use if he is traveling 454.5 miles?

12 - 6y = 24, what is y?

How many solutions exhaust for the given equation? 3 (x+10) + 6=3 (x+12) a. zero b. one c. two d. infinitely many

The hypotenuse of a right triangle is 55 inches long. One leg is 2 inch (es) longer than the other. Find the lengths of the legs of the triangle. Round your answers to the nearest tenth of an inch. Answer: The lengths are

A random sample of 101 lightning flashes in a certain region resulted in a sample average radar echo duration of 0.81 sec and a sample standard deviation of 0.45 sec.

Jeanette can walk 1 km in 11 minutes. At the same rate, how far can she walk in 55 minutes?

Ella has 0.5 lbs of sugar. How much water should she add to make the following concentrations? Tell Ella how much syrup she will have in each case. 75% syrup?

What is the equivalent expression for 2/3 - 4/5?

Which is true regarding the function? The function f (x) is given by the set of ordered pairs. { (8, - 3), (0, 4), (1,-5), (2, - 1), (-6, 10); f (-3) = 8 f (3) = 5 f (8) = 0 f (-6) = 10