The sum of two numbers is 43, and their product is 450. What is their difference?
2 answers:
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Answer:
Correct answer =
Step-by-step explanation:
Given:
Andrea multiplied 6.75 x 10^6 and 0.2 x 10^6 and got 6.95 x 10^6.
Question asked:
Explain Andrea’s mistake and give the correct answer.
Solution:
The above question is of <u>exponential question</u>:
Here Andrea simply <u>added </u>6.75 to 0.2 and got 6.95 and took 10^6 as common and written down wholly 6.95 x 10^6 which is incorrect.
Here we <u>multiply</u> 6.75 to 0.2 and get 1.35 and secondly to multiply 10^6 with 10^6 we have to understand the rule of exponents:-
<u>As we know:</u>
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Hence when we multiplied 6.75 x 10^6 and 0.2 x 10^6 originally we got