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3 years ago

13

I need which other form can you represent the number 2 1/3

1 answer:

navik [9.2K]3 years ago

6 0

You can make the number an improper fraction.

To keep the same denominator, multiple the number two by three.
You should get the number 6.
Once you have this number, add it to the remaining 1/3.

It should look like this:
7/3

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Julio bought 4 pencils and 3 erasers for $0.37 and David paid $0.33 for 3 pencils and 4 erasers. What is the cost of one pencil?

nirvana33 [79]

Answer:

Each pencil costs $0.07 and each eraser costs $0.03

Step-by-step explanation:

System of linear equations

It refers to the study of systems when n variables are related in m linear equations, each one is not independent from the others. Solving such systems can be done following very diverse approaches.

Let p=the price of each pencil while e is the price each eraser

Julio bought 4 pencils and 3 erasers, spending

$4p+3e=0.37$

David bought 3 pencils and 4 erasers, spending

$3p+4e=0.33$

The system of equations is written in the form

$\left\{\begin{matrix}4p+3e=0.37\\ 3p+4e=0.33\end{matrix}\right$

We'll solve it by reduction. Multiplying the first equation by -3 and the second by 4:

$\left\{\begin{matrix}-12p-9e=-1.11\\ 12p+16e=1.32\end{matrix}\right.$

Adding both equations:

7e=0.21

e=0.03

Multiplying the first one by -4 and the second by 3

$\left\{\begin{matrix}-16p-12e=-1.48\\ 9p+12e=0.99\end{matrix}\right.\end{matrix}\right.$

Adding both equations:

-7p=-0.49

p=0.07

Solution: Each pencil costs $0.07 and each eraser costs $0.03

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Rueben has some photographs printed. The cost is £1.50 for postage and 15p for each print. The total cost for Rueben is £3.90. H

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Answer:10

Step-by-step explanation:if i did this right you just do 15 divided by 1.50 and you get 10

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Answer:

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Therefore the corect answer is option b.

Step-by-step explanation:

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