2) Elimine os parênteses e calcule a) (-34) + (-12) =
b) (-84) + (-84) =
c) (+48) + (-66) =
d) (-91) + 0 =
e) 0 + (+77) =
f) (-3) + (+11) + (-8) =

Karl needs to build a stage that has an area of 72 square feet.the length of the stage should be longer than the width.what are the possible whole number measurements for the length and with of the stage complete the table with possible measurements of the stage

Which ratio is equivalent to 10: 85

An advertising firm has an old computer that can prepare a whole mailing in 6 hours. with the of newer model the job is complete in 2 hours. how long would it take the newer model to do the job alone?