In a group of kangaroos, the two lightest kangaroos weigh 25% of the total weight of the group. The three heaviest kangaroos weigh 60% of the total weight. How many kangaroos are in the group?

The first derivative of x^2+2y^2=16 is - x / (2y), the second is - (2y^2+x^2) / (4y^3). Find the third implicit derivative of x^2+2y^2=16.

Using a number line what is the equivalent fraction to 1/4

What is square root of 80 in simplified radical form? A. 8 square root over 10 B. 10 square root over 8 C. 5 square root over 4 D. 4 square root over 5

Given: ∠WXY and ∠YXZ are supplementary angles and m∠WXY=75° Prove: m∠YXZ=105°

How ofteten Do chemists study the elements

If a pizza could have some (or none) toppings out of cheese, pepperoni, ham, sausage, mushrooms, and pineapple.

Is "y=19x-5 proportional or non-proportional?

Sam wants to write an equation to represent a proportional relationship with a constant of proportionality of 6. He writes the equation y = 6 + x. Is he correct. If not, what is the correct equation? Explain your answer.

A street light is at the top of a "20" ft tall pole. a woman "6" ft tall walks away from the pole with a speed of "5" ft/sec along a straight path. how fast is the tip of her shadow moving when she is "50" ft from the base of the pole?

Which equation describes a relationship that is directly proportional? y = 9 y = 3x y =.20 y = x + 4