Jim J.

Find four numbers proportional to the numbers 2, 4, 5, and 6 if the difference between the sum of the two last numbers and the sum of the first two numbers is equal to 4.8.

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a rectangular area of 120m^2 

what number is the closest to the number of times air must be pumped to fill an empty spherical balloon to a radius of 10cm.

systems of equations word problem

A canoe race team can paddle upstream 20 miles on a river in 4 hours and back down to their starting point in 2.5 hours. Determine what the speed of the river current is and the canoeing speed in... more

rewrite the series using summation notation. Use 1 as the lower limit or summation.   -1/3+1/6-1/9+...+1/18 (Type the expression using i as the variable)

need help putting in sentence 

I'm having trouble using the correct formula.

The sum of two numbers is 56. The smaller number is 18 less than the larger number. What are the numbers?

John, Mike, and Dillon are painting a fence. John paints 1/4 of the fence and Mike paints 2/5 of the fence. How much of the fence is left to paint for Dillion? Please break the common numerator... more

A rectangular field has a perimeter of 200 yards. The length of the field is 10 yards longer than twice the width. What are the dimensions of the field?

The train from A reaches B 9 hours after the 2 trains meet, and the train from B reaches A 4 hours after they meet.

how many cones and sundaes were sold? solve the equations by using the substitution method.