James is 4 years less than 7 times the age of his daughter, who is 4 more than half of her brother's age. The sum of their ages is 38. How old is James ? I need help solving multiple variable...

James is 4 years less than 7 times the age of his daughter, who is 4 more than half of her brother's age. The sum of their ages is 38. How old is James ? I need help solving multiple variable...

Assume the average mileage per gallon for all cars in America is 20mpg. Also assume that every car owner in America drives on average 10,000 miles per year. If 1 gallon of gas produces 18 pounds of...

If 6 men can harvest a field in 60 working hours, and a man works three times as fast as a boy: (a) How long will 10 boys take to harvest the field? (b) How many boys will be needed to help...

Kevin and Randy have a jar containing 87 coins, all of which are either quarters or nickels. The total value of the coins in the jar is $11.75. How many of each type of coin do they have? The...

the age of A is one third of the ge of B . after 15 years the age of A will be the half of the age of B . find their present age

Quadratic trinomials are obtained when binomial expressions are expanded. Consider the following: (x + a)(x + b) = x2 + bx + ax + ab This means that quadratic...

What should the length of the square be (rounded to two decimal places) to give you the maximum volume?

i don't understand math and need help on this question so I understand math alittle more

Write an equation. For the Phrase

Find three consecutive odd integers such that four times the largest is one more than nine times the smallest integer.

A total of $12,000 is invested in two funds paying 9% and 11% simple interest. If the yearly and trust is $1180, how much of the $12,000 is invested at each rate?

I need to find the shorter, longer and the hypotenuse

1-ax is width. 2x+1 is length. What expression gives the area, in square inches, of the decal, in terms of a and x?

i need help with my math homework that idk how to do

A shopper's discount club charges a monthly fee of $15 and sells gasoline for $2.05 per gallon. The gas station across the street sells gasoline for $2.35 per gallon and charges no fee. How many gallons...

Dan had $20,000 to invest. He invested some of it in an account that paid 7% simple interest per year, and he invested the rest in an account that paid 8% simple interest...

write an equation of the line that passes through the point (2,-3) and is perpendicular to the line -2x+5y=3

A square and a triangle have the same area. The base of the triangle is 3 feet more than the side length of the square. The height of the triangle is 1 foot less than the base of the triangle...

two vehicles? How do i solve this problem step by step?

When making a long distance call from a certain pay phone, the first three minutes of a call cost $2.15. After that, each additional minute or portion of a minute of that call costs $0.40. Find the...