Yara multiplies and divides a certain number by the same power of 10. The product she gets is 40,000 and the quotient she gets i
s 0.000004. Find yara’s Number and the power of 10 she used. Explain your reasoning
1 answer:
40,000 = 4 * 10^4
0.000004 = 4 * 10^-6
The power of 10 exactly in between 4 and -6 is -1.
She started with 4 * 10^(-1) which is 0.4.
0.4 * 100,000 = 40,000
0.4/100,000 = 0.000004
The number she started with is 0.4.
The power is 10^5.
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