youve taken three tests and scored a 94.5%, a 87.4%, and a 85.1%. what will you have to score on your fourth test to average at least a 90%?

Find an equation of the line perpendicular to the graph of 28x-7y=9 that passes through the point at (4,1)

Each person in an it department of 25 people works on at least one of 3 major projects: system security, program implementation, platform development. 10 people work on system security, 13 work on program implementation, and 12 work on platform development. 4 people work on system security and platform development, 5 people work on program implementation and platform development, and 2 people work on all three projects. how many people work on system security and program implementation?

The school board administered a math test to all students in grade 66 at high achievers charter school and determined that 15\%15% of them were below grade level in math. based on this data, which of the following conclusions are valid? choose 1 choose 1