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Lubov Fominskaja [6]
3 years ago
9

There are 3 ¼ packages of pencils on the desk. One full package weighs 1 ½ pounds. How much do all the containers weigh?

Mathematics
1 answer:
zimovet [89]3 years ago
5 0

<u>Answer and Explanation</u>

4\ \frac{3}{4} or \frac{19}{4} = 4.75

__________________________________________________________

<em>We can prove this is correct by adding and multiplying some of the fractions.</em>

<em></em>\frac{1}{2}\cdot\frac{2}{2} = \frac{2}{4}

<em>There.</em>

__________________________________________________________

<em>Now, we will add the fractions.</em>

\frac{1}{4}+\frac{2}{4} = \frac{3}{4}

3+1 = 4

4+\frac{3}{4} = 4\ \frac{3}{4}

__________________________________________________________

<em>So, the answer is  </em>4\ \frac{3}{4}.

__________________________________________________________

<em>Hope this helps! <3</em>

__________________________________________________________

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Step-by-step explanation:

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We'll give here both answers.

We have to calculate:

6.72\cdot 10^{5}+3.2\cdot 10^{4}

Since the numbers don't have the same exponent, we must make them equal. Let's make the second number have an exponent of 5, by dividing by 10:

6.72\cdot 10^{5}+3.2\cdot 10^{4}=6.72\cdot 10^{5}+3.2/10\cdot 10^{5}

6.72\cdot 10^{5}+3.2\cdot 10^{4}=6.72\cdot 10^{5}+0.32\cdot 10^{5}

Now we add:

6.72\cdot 10^{5}+3.2\cdot 10^{4}=7.04\cdot 10^{5}

It's correctly expressed in scientific notation. Now to convert to 'standard form', multiply by 10^5=100,000:

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