Are the ratios 12:9 and 6:3 equivalent?

The sum of a certain number and 8 is 23 what is the number? I do not get this cause I also have to write the equation

Solve for x: 5x + 2 = 4x - 9.

Tyrone takes 3/4 hour to paint a wall. His brother takes 1/3 of the time he takes. How long will his brother take to paint five similar wall.

Slither io adds 5 to 1346787654323567, what does he get

3) If the total cost for 12 lessons is $214.20, how much does a single lesson cost?

How many solutions are there to the following system of equations? 4x - 8y = 0 -3x + 8y = - 7

A cube tank has a side length of 12 inches. what is the surface area of the fish tank, including the base lid?

What is 4x divied by 13

1.7 yard long and 14/5 yard long which one longer

Sandy is Working with a carpenter to frame a house. They are using 8 foot long boards, but each board must be cut to be 7 feet, 10 3/4 inches long. How much is cut off each board? a. 3/4 b. 1 1/4 c. 1 3/4 d. 7