How can I Factor the expression below 9x2-1

Ax+4y=43 I need someone to tell me what the hell this is.

What the common ratio for 28 14 7 and3.5

Suppose you have 40 blue socks and 40 brown socks in a drawer. How many socks must you take from the drawer without looking to be sure of getting a pair of the same color?

What is the meaning of the word lean in this sentence? With no relatives living nearby, and no one else to depend on, Robert had to leg on his friends during emergencies.

Oscars aunt leaves 50 miles away, this is 6 times times as far as Oscar's grandpa lives. how far does oscars grandpa live

How do we know that it's a parallel line

The Rivera family drove 267.9 miles from their home to Cape Cod, Massachusetts. They used 9.5 gallons of gas. How many miles per gallon of gas did they get on the trip?

What is the product? - 3 4 2 - 5 3 - 2 1 0

Sahir took 1 h 22 min to do his english homework 45 min to do his maths homework, and 10 min to do his urdu. How long did he take to complete all his homework?

Y=3x-16 rate of change?