A model train has a scale of 1 inch to 9 feet. If the real train is 36 feet tall, how tall is the model train?

What is the value of x when x + 7 = 21?

Look at this pattern ; 1,4,9, number 10000 belongs in this pattern . what’s the place of this number?

How many heads would you expect if you flipped a coin twice? first, fill in the table below with the correct probabilities. hint: the sample space for flipping a coin twice is {hh, ht, th, tt}. a = b = c =