Which triangle is a 30°-60°-90° triangle?

Roger could feed 5 walruses with 4 kilograms of fish. how many walruses could he feed with 7.2 kilograms of fish?

Your friend uses c=50p to find the total cost, c, for the people, p, entering a local amusement park is the cost of admission proportional to the amount of people entering the amusement park? explain.

The difference of three and the reciprocal of a number is equal to the quotient of 20 and the number. find the number.