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yulyashka [42]
3 years ago
7

" id="TexFormula1" title=" {7}^{2} - 3 + 9 \times 8 \div 2 \\ w = " alt=" {7}^{2} - 3 + 9 \times 8 \div 2 \\ w = " align="absmiddle" class="latex-formula">
​
Mathematics
2 answers:
taurus [48]3 years ago
7 0

Answer:

82

Step-by-step explanation:

49 - 3 + 72/2

= 46 + 36

= 82

il63 [147K]3 years ago
4 0

For this case we must find the value of the following expression:

7 ^ 2-3 + 9 * 8÷2 =

According to the PEMDAS algebraic order of operations:

P: Perform any calculation within parentheses

E: Simplify any exponential expressions.

MD: Do all the multiplications and divisions, from left to right, as they appear.

AS: Do all the addition and subtraction, from left to right, as they appear.

So:

49-3 + 9 * 8÷2 =

49-3 + 72÷2 =

49-3 + 36 =

46 + 36 =

82

ANswer:

82

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10$ is spent on 2 big pails and 1 small one. A smail pail cosf half as much as each big one. How much is spent on a big pail? Ho
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Answer:

<u>$4</u> is spent on a big pail and <u>$2</u> is spent on a small pail.

Step-by-step explanation:

Given:

10$ is spent on 2 big pails and 1 small one.

A small pail cost half as much as each big one.

Now, to find the amount spent on a big pail and on a small pail.

Let the cost of a big pail be x.

And the cost of small pail be \frac{x}{2} .

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According to question:

(x+x)+\frac{x}{2}=10

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<em>Multiplying both sides by 2 we get:</em>

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<em>Dividing both sides by 5 we get:</em>

x=4.

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<em>So, the cost of a small pail</em> = \frac{x}{2} =\frac{4}{2}=\$2.

Therefore, $4 is spent on a big pail and $2 is spent on a small pail.

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