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 D
Explanation
First step is to find the least common divisor of denominators 3, 6, and 5 which is 30. Then
\(\frac{2}{3}+\frac{1}{6}+\frac{2}{5}=\frac{2\left(10\right)+5+2\left(6\right)}{30}\)\(=\frac{20+5+12}{30}=\frac{37}{30}=1\frac{7}{30}\)
Correct Answer is D
Explanation
Use the relation, 1 gallon= 128 fluid ounces to convert between gallons and ounces. Then,
\(576\ fluid\ ounces\ast\frac{1\ gallon}{128\ fluid\ ounces}=4.5\ gallons\)
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
Correct Answer is A
Explanation
The ratio of females to students enrolling to nursing school is 7:8. So the percent of females in the class is:
\(\frac{7\ }{8\ }\ast100% =87.5%\)
Therefore, the class is made of 87.5% of females enrolling to a nursing school.
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