8. In a class there are 11 boys and 19 girls.
The mean weight of all 30 children is 32.85 kg.
The mean weight of the 11 boys is 31.9 kg.
Work out the mean weight of the 19 girls.

In the coordinate plan (-6,9) b (3,9) c (3,3) def is shown in the coordinate plan below

Nick and nora are married and have three children in college. they have an adjusted gross income of 47,400. if their standard deduction is 12,600 itemized deductions are 14,200 and they get an exemption of 4000 for each adult and each dependent what is their taxable income

What are the solutions of the system? solve by graphing. y = -x^2 - 3x + 2 y = -2x + 2