so there are 9 girls and 11 boys in a class and two students will be chosen one after another. find the probability that both are boys. well i got to the 11/20 but my paper says i need to multiply it by something. What do i multiply it by?

The amount of money, in dollars, in an account after t years is given by a = 1000(1.03)^t. the initial deposit into the account was $_^a0 and the interest rate was _a1% per year. only enter numbers in the boxes. do not include any commas or decimal points^t. the initial deposit into the account was $__^a0 and the interest rate is % per year.

Joe has some money in his bank account he deposits 45$ write an expression that represents the amount of money in joe's account

The perimeter of an equilateral triangle is 4 cm more than the perimeter of a square and the length of a side of the triangle is 8 cm more than the length of a side of the aware. find the length of a side of the equilateral triangle