The sum of the measures of three angles of a quadrilateral is 290. The measure of the fourth angle is..?

70

Step-by-step explanation:

In a quadrilateral the angles add up to 360 degrees and so 360 - 290 = 70 so the answer would be 70.

If correct please mark brainliest

to plot points   for x just start at the origin (middle) and go to the left however many times it say(if the number is a positive) if the number is a negative then go right however many times it says if it is 0 go nowhere

now keep you pencil there and go up however many times it says on y(if it is positive) if it is negative then go down however many times it says. if it says 0 go nowhere.

you have just plotted a point! now when you finish plotting all of them connect them with a ruler

plot each point as (-3, 7), (0,4), (3,1), (8,-4)   in the parenthesis on the left of the comma is x and the right is y.

  answer:

  write 548 as 500 + 40 + 8. multiply each addend by 5. then add the three products to get 2,740.