A long distance runner starts a race at 1 m/s. he increases his speed to 3 m/s during the middle of the race and slows down to 2 m/s at the end. in total he runs 2,000 meters in 12 minutes (720 seconds). what is his average speed?

Example 2.3.6. Consider a fish tank that initially contains 150 liters of water with 20 grams of salt (pollutant) dissolved in it.

You are looking at two different houses. house #1 would have a daily 5-mile commute to work, while house #2 would have a daily 20-mile commute. how much more co2 would you produce annually if you buy house #2? (hint: driving 1 mile produces 1.

Moshe is playing cards and is grouping the cards that have already been played by suit (hearts, clubs, diamonds, and spades). Moshe is using what type of encoding?

Which measurements are the greatest 6kilometers 60 meters 600 centimeters 6000 milimeters

Which expression is equivalent to (5z^2+3z+2) ^2

Mr. Johnson sells erasers for $3 each. He sold 96 erasers last week and he sold 204 erasers this week. About how much more money did he make this week?

If 6t-3=-177 what is the value of the variable

What is the sum? - 0.3 + (-1.8)

Alejandro has 5 7/8 pizzas left over from a party. Is 1/4 of a pizza is a serving how many servings does Alejandro still have left?

Simplify 5 (R + 2) - 6. A. 5R + 4 B. 5R - 4 C. 5R - 6