Is the number 17.4×10−717.4×10−7 expressed in scientific notation? Why or why not?
1 answer:
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Answer:
384 cm²
Step-by-step explanation:
Since it is a square pyramid, the total surface area of the pyramid is the area of its square base plus the area of its 4 triangular faces.
Area of a triangular face
= ½ ×12 ×10
= 60 cm²
Base area of pyramid
= 12 ×12
= 144 cm²
∴ Surface area of pyramid
= 4(60) +144
= 240 +144
= 384 cm²
Answer:
C ≈-1 and x≈8.1
Step-by-step explanation:
-sqrt(x + 2) - 3 = 4 - 2 abs(x - 3)
Using graphing technology, (see the graph) they intersect at x≈-1 and x≈8.1
