Solve each system by elimination. 3) -4x + 6 = -14
4x - 8y = 16
A) (2.-1)
C) (4.1)
B) (-1,2)
D) (2.1)

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?

Find the condition that the zeros of the polynomial f(x) = x^3+3px^2+3px+r may be in a.p.

How many heads would you expect if you flipped a coin twice? first, fill in the table below with the correct probabilities. hint: the sample space for flipping a coin twice is {hh, ht, th, tt}. a = b = c =