A 15 foot building casts a 9 foot shadow. How tall is the building if it casts a 30 foot shadow at the same time?
1 answer:
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Answer:
2
Step-by-step explanation:
When given a fractional power, you want to try to see if the base has any power that can be used to simplify the power.
Since a^b/c =
8^1/3=
8 times by it self it 8
cube root of 8 is three numbers that are the same and times by each other to give 8
2×2×2=8
》2