Determine the equivalent system for the given system of equations.

4x - 5y = 2

10x - 21y = 10

a. 4x - 5y = 2

3x - y = 4

b. 4x - 5y = 2

24x - 47y = 22

c. 4x - 5y = 2

10x + 3y = 15

d. 4x - 5y = 2

14x + 26y = 12

Alexandra's bank statement shows a closing balance of $130.68. There are no outstanding checks or deposits. Her checkbook shows a balance of $127.93. What might account for the different balances?

Mark walks to school in 3 minutes. It takes Tom 4 times as long to walk to school as it does Mark. How long does it take Tom to walk to school? minutes

Subtract four times the quantity 2x + 5 from three times the quantity 7x-8

Numerical expressions 24+7 and 9•[24+7]

What is 5 minus 1/4?

Chemists measure the acidity of an aqueous solution using pH. The pH is pH=-log-10[H^+] where pH is a measure of hydrogen ion concentration [H^+] measured in moles of hydrogen per liter of a solution. Find the pH of a solution if [H^+]=5.5x10^-12.

I think of a number, multiply it by 2, subtract 5 and multiply the result by 3 Write it as a algebraic question and any number being x

Whats the area of 18 inches 24 inches and 26 inches

In how many ways can you choose a committee of 7 from a total of 20 people?

The new York giants gained 2 yards on a play. what is this as a signed number