Does this system of equations have one solution, no solutions, or an infinite number of solutions?

2x + y = 5

2y + 4x = 10

1. a^3 - 9a^3 = 2. 10x^2+10-2x+x^4= 3. (6n^4+3) + (2n^3+4) =

The difference between two positive numbers is 5. their product is 104. find the numbers

Find the perimeter of an ellipse if the major axis is is 30mm and the minor axis is 12mm

At a school fair 70% of the people are under 16 years old. One third of the people remaining are teachers. If there are 21 teachers at the fair. How many people are there at the fair in total?

What all does the ASA postulate involve

In two years the value of a car chnaged from 14,000 to 11,200 what is the percent of change

What is the difference 4 1/3 - (-2/3)

Elaine is painting a fence. she knows that she needs 1 gallon of paint for each 10 feet of fencing. The fencing will enclose a rectangular yard that is 3 yards long and 2 yards wide. how much paint does Elaine need?

What is the square root of 2/9?

What is 75% of 200?