Write 11/3 as a mixed number Write 2 4/5 as an improper fraction Please help!!

Mathematics

1 answer:

kaheart [24]2 years ago

4 0

Answer:

11 over 3 is 2 and 2/3. 2 4/5 is 14/5

Step-by-step explanation:

When making a fraction a mixed number, divide the numerator by the denominator. What ever number you have left will be ur numerator,and denominator always stays the same. Making fractions improper: multiply denominator by the whole number (2) and then add the numerator to the answer. denominator stays the same.

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One person can do a certain job in 15 minutes and another person can do the same job in 30 minutes. How many minutes will it tak

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Hello! Your answer is B, 10 minutes.

Say the x = minutes taken to do the job. You can set up an equation like this to solve this.

$\frac{1}{15} x + \frac{1}{30} x = 1$

This is representative of the situation. The fractions each represent how much each person does in a minute, and when they're multiplied by x, that's how much of the project they get done based off of the minutes they work together on the job. Add the two together, and you get how much of the project is finished in x amount of time. Set it equal to 1, as you are looking for 100% completion.

Once you have this equation, find a common denominator, add, and solve.

$\frac{1}{15} x + \frac{1}{30} x = 1$

$\frac{2}{30} x + \frac{1}{30} x = 1$