Answer:
SA = 124 cm²
Step-by-step explanation:
The lateral surface area is the area of all sides besides that base, so 93 cm² is the sum of 3 sides of the tetrahedron.
93/3 = 31 cm² per side, there are 4 sides, so 31(4) = 123 cm² is the total surface area
Answer:
The number is 23.
Step-by-step explanation:
5n + 7 = 122 Subtract 7 on both sides
5n = 115 Isolate the variable by dividing 5 on both sides
n = 23
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Answer: H
Step-by-step explanation:
Answer:
the last table
Step-by-step explanation:
Answer:
14:2
Step-by-step explanation:
1 coin is one part, one bill is one part
14:2