x
2
+
9 has no (Real) factors (Unlike x
2
−
9
)
Explanation:
The most you could do with this is use the quadratic formula on
XXXX
x
2
+
0
⋅
x
+
9
to get
XXXX
±
3
i
So you could factor using Complex values:
XXXX
x
2
+
9
=
(
x
+
3
i
)
(
x
−
3
i
)
Well, check the picture below, that's a triangular prism
so.. if you notice, is really just 2 triangles and 3 rectangles stacked up to each other at the edges
so.. if you just find the area of the 3 rectangles, and the two triangles, sum all five areas up, and you're golden
in your picture, notice the tickmarks, that triangle has all sides equal to each other, so.. if one is 6 units, so are the other sides as well
now.. to get the area of a triangle is 1/2bh as you'd know... so.. what the dickens is the "h" or height of the triangle anyway, well

that's the altitude or height, you already know the base, notice the tickmark
so, get the area of those 2 triangles, and the 3 rectangles and sum them up, and that's the surface area of the triangular prism
Yes! Anything is possible!!
Answer: 15 boxes
Step-by-step explanation:
From the question, we are informed that Denise wants to cover a 21.75 square foot wall with weathered wood and that each box of weathered wood contains 1.5 square feet of wood.
The number of boxes of weathered wood that she need will be calculated by dividing 21.75 square feet by 1.5 square feet. This will be:
= 21.75/1.5
= 14.5
= 15 boxes approximately
Answer: ⬇️⬇️⬇️⬇️
Lateral area = 505 m² ; Surface area = 519 m²
Hope I helped