Which of the following numbers is not divisible only by prime numbers, itself and 1?
1 answer:
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Answer:
Barbara's did not factor out 63.
Step-by-step explanation:
63 can be factorize as 63 = 7 9 and 7 d can be factorize as 7 d = 7
d
Therefore common term between 7 d and 63 is 7.
.
In Barbara's equation, it did not factorize 63 as it contains common term 7 in it. Therefore that is the error in Barbara's equation.
<span>"If one of you comes to our tree, then our population will be double that of yours."
So </span>
<span>"If one of you comes here, then our population will be equal to that of yours."
</span>
Rearranging these to make A the subject gives:
Then solve for B:
Substitute B back in to an equation:
<u>So there are seven birds in A, and 5 birds in B</u>
So </span>
<span>"If one of you comes here, then our population will be equal to that of yours."
</span>
Rearranging these to make A the subject gives:
Then solve for B:
Substitute B back in to an equation:
<u>So there are seven birds in A, and 5 birds in B</u>