Which system of equations has no solution?

4x + 4y = 22 and 6x + 6y = 33
3x + 6y = 11 and –8x – 16y = –18
4x – 10y = 8 and 10x – 25y = 20
–12x + 15y = –5 and 16x + 20y = 4

You can ride your bike around your block 6 times and the whole neighborhood 5 times in 16 minutes. you can ride your bike around your block 3 times and the whole neighborhood 10 times in 23 minutes. how long does it take you to ride around the neighborhood?

In dire need~! describe how to use area models to find the quotient 2/3 divided by 1/5. check your work by also finding the quotient 2/3 divided by 1/5 using numerical operations only.

Look at the example below which shows how the product property of radicals is used to simplify a radical. use the product property of radicals to simplify the following radical.