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Answer:
25 candles.
Step-by-step explanation:
5x - 1x = 100
4x = 100
Divide both sides by 4.
You are then left with x = 25.
The store sold 206 sociology textbooks and 103 history textbooks.
To write in standard notation, move the decimal point on
7.4
over as many times as the power of ten given.
Move to the left if the given power has a negative exponent
Move to the right if the given power has a positive exponent
Therefore:
7.4
×
10
−
5
=
0.000074
