Dan has some marbles. Ellie has twice as many marbles as dan. frank has 15 marbles. Dan, Ellie and frank have a total of 63 marbles. How many does dan have

Write an algebraic expression or equation five times the sum of 3 and a number

Today Nate has 100 bananas he with eat 2 of them everyday is the number of bananas Nate has left proportional to the number of days that pass?

Explorer 35's orbit measured 11,400 kilometers across its long dimension. What was the orbit's semimajor axis in kilometers? a. 5,700 kmb. 9,600 kmc. 11,400 kmd. 22,800 km

Read the following passage and answer the question. You are not rousing me from a deep sleep. You must know I've been shedding many tears and, in my wandering thoughts, exploring many pathways.

The area of a rectangle is 170 square feet if the perimeter is 54 feet find the length and width of a rectangle

A car travels 3 hours at 50mph; then travels 40mph for 7 hours. How many miles does it travel during the 10 hours?

A total of 449 tickets were sold for the school play. they were either adult tickets or student tickets. there were 51 fewer student tickets sold than adult tickets. how many adult tickets were sold?

The price of 1kg of apples is 0.85$. What is the price of 200 grams of apples?

Express 900 as a product of its prime factors in index form. Write the prime factors in ascending factors.

The equation 3x+4=5x-4 has the solution set {4}. explain why the equation (3x+4) + 4=5x-4) + 4 also has the solution set {4}