To irrigate crops, a farmer uses a boom sprayer pulled by a tractor. The nozzles are 50 cm apart and spray at an angle of 70°. To the nearest centimeter, how high should the sprayer be placed above the crops to ensure that all the crops are watered?

6n^2-7n-75=0 solve by quadratic formula

Can you simplify 4/7? 24 points will be awarded!

12. the amount of money in a bank account decreased by 21.5% over the last year. if the amount of money at the beginning of the year is represented by ‘n', write 3 equivalent expressions to represent the amount of money in the bank account after the decrease?