A sample of 30 randomly
selected tomatoes are
picked. The diameter of
each is measured. The
mean diameter is 91mm.
The standard deviation is
8mm.
Assuming normal
distribution, calculate the
99% confidence interval?

How many real and imaginary solutions does the equation x^2-3x=-2x-7 have?

Jacob signs up to work for 2 1/2 hours at the school carnival. if each work shift is 3/4 hour, how many shifts will jacob work? (i just want to double check : |, for anybody that responds! : )

The school that imani goes to is selling tickets to the annual dance competition. on the first day of the ticket sales the school sold 7 adult tickets and 5 child tickets for a total of $96. the school took in $40 on the second day by seling 3 adult tickets . find the price of an adult ticket and the price of a child ticket. solve by using substitution elimination college prep algebra math heres the 2 equations i came up with 7x+5y=96 and 3x+2y= -40 show all workiv be stuck on this.