Find the first partial derivatives of the function. (sn = x1 + 2x2 + + nxn; i = 1, n. give your answer only in terms of sn and i.) u = sin(x1 + 2x2 + ⋯ + nxn)

If 24 people have the flu out of 360 people, how many would have the flu out of 900. choose many ways you could use proportion that david would use to solve this problem

Dakota earned $7.50 in interest in account a and $18.75 in interest in account b after 15 months. if the simple interest rate is 4% for account a and 5% for account b, which account has the greater principal? explain. to make it a little easier, there is an image. good luck!

20 ! brainliest ! add and simplify your answer.