If you mean (3n-2m)^2 then the answer is
9n^2-12mn+4m^2
So B
Answer: B. 89
Step-by-step explanation:
-29.202x7= -204.414
-204.414+293.5= 89.086
So the answer is B. 89
90 cards in total and 30 in each stack
Answer:
87.8 square meters
Step-by-step explanation:
First of all, find the area of the three recthangles.They are all 9m long and 3m wide. 9*3 is 27, and since there are three of them, 27*3 is 81.
To find the area of the two triangles, you could do 3*2.6. Normally, you would halve the values because they are triangles but since there's two of them it cancels out.
3*2.6 is 7.8, and adding that to the area of the rectangles gets the equation 81+7.8 which comes out to 87.8 square meters.
