Add: 2/3 + 4/9=
8/15
6/12=1/2
10/9=1 1/9
9/9=1
Correct Answer : C
To add fractions, find the least common divisor of the denominators of 3 and 9, which is 9.
Then
\(\frac{2}{3}+\frac{4}{9}=\frac{3\left(2\right)+4(1)}{9}=\frac{6+4}{9}=\frac{10}{9}=1\frac{1}{9}\)
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Related Questions
Correct Answer is C
Explanation
0.6 divided by 0.12 is determined using a calculator as follows
\(\frac{0.6}{0.12}=5\)
Correct Answer is A
Explanation
0.045 is less than 0.054
Correct Answer is ["2190"]
Explanation
We use dimension analysis to find the number of diapers the child uses in a year. In a day, the mother uses 6 diapers and a year has 365 days. Then, the number of diapers in one year becomes:
\(365\ days\ast\frac{6\ diapers}{1\ day}=2190\ diapers\)
In a year, the child will use 2190 diapers.
Correct Answer is D
Explanation
\(\frac{x}{4}\ =\ \frac{9}{x}\)
Cross-multiply the above proportion equation
\(X^2=9\ast4\)
\(X^2=36\)
Take square root on both sides
\(\sqrt{X^2}=\sqrt{36}\)
\(X=+6\ or-6\)
Taking the positive square root, X=6
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