How do i write in algebraic expression twice the sum of t and 2

What's the answer to 10-4 - (6-4) + 4-1

Indicate the formula for the following conditions. C (n, r) = I got C (n, r) = (n r.) = n! r! (n-r) ! so far but I'm not sure what to do after this

Solve for x (-6/5) x-4=-46

Lin has a scale model train. The model is created at a scale of 1 to 48. The height of the model train is 102 millimeters. What is the actual height of the train In meters? Explain your reasoning

A group of ladies meet for an afternoon tea party. They bring all their cats. In all, there are 26 heads and 84 feet. How many ladies and how many cats are in the room

Which equation is 69 is greater than x

If x = 7, y = 1 and 2 = 1, then evaluate the following expression: X - y + z =

Solve 0.06*0.7+0.03=0.06 * (-0.2) + 0.03

What fraction of 1 pint is 1 cup

Solve m² + 8m = - 3 by completing the square. (Use a comma to separate multiple values.) What the answer for this?