Pick a number 1 through 20. Now do it again. Now do it a third time. I am going to write
down my prediction of what numbers you
picked. Assuming no magic was used, what is
the probability I guessed right? Put your
answer in fraction form. (Note: Numbers CAN
be used more than once.)

The measure of the angles of triangle abc are given by the expressions in the table. angle-measure a-48 degrees b-(6x-28)degrees c- (2x) degrees find the value of x. then find the measures of angles b and c. enter your answers in the boxes. x= m m

Which expression is equivalent to (3^2)^-2 a.-81 b.-12 c.1/81 d.1/12

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?