Answer:
6
2
+
8
−
2
5
=
−
3
6a^{2}+8a-25=-3
6
2
+
8
−
2
5
−
(
−
3
)
=
0
Step-by-step explanation:
0/3
Paper he needs = total surface area
So to break it down into 2D shapes, that prism has 2 2D triangles, and 3 2D rectangles of different sizes.
The triangles are the same size, since you have 2, just multiply 2 by the formula for the area of a triangle: 1/2(base)(height) which is 2x1/2(5)(12) = 60
Next you'll need the area of all the rectangles: length x width. which would be (5 x 5) + (13 x 5) + (12 x 5) = 150
So the total amount of wrapping paper he'd need is 150mi^2
Heres the correct order from least to greatest: 3.9, 3 11/12, 3.98. To find the answer you divide 11 by 12 to see that is is .91,or 3.91 which is in between 3.9 and 3.98.
