what is the first step used in solving this equation 2x+9y=28 and 3x-3y=14. Identify the variable that will be solved for when you add these equations

A car and a bus which are 280 miles apart are driving towards each other. The car is moving at 50 mph while the bus is moving at 55 mph. How long will it take them to meet?

Solve for x: |2x + 12| = 18 x = 3, x = - 3 x = 3, x = - 15 x = 15, x = - 15 x = - 3, x = 15

Write and solve an equation for : The difference between 1257 and 973 divided by 2

Given D = 5, E = 10 and F = 4, evaluate D• E/F 1/2 2 25/2

Is the time it takes you to run a 100-meter race a function of the speed you run. Explain?

Find the quotient of ' (16t^2-4) / (8t+4) '

The Science Club has 35 members, 10 girls and 25 boys. What is the ratio of girls to boys in the Science Club? A. 2:1 B. 2:5 C. 5:2

The cost of petrol rises by 2 cents a liter. last week a man bought 20 liters at the old price. This week he bought 10 liters at the new price. Altogether, the petrol costs $9.20. What was the old price for 1 liter?

1. Which equation represents the linear graph? A) y = 2x - 4 B) y = 2x + 4 C) y = 4x - 2 D) y = 4x + 2

Mary has $500 in her account. She makes a $350 withdrawal, deposits $100, and then gets charged a $20 fee. How much does she have in her account? A) $180 B) $230 C) $290 D) $340