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poizon [28]
3 years ago
15

√32+√42 ÷ √8 +√12 simplify

Mathematics
1 answer:
pav-90 [236]3 years ago
5 0

Note: It should be 48 instead of 42 because √42 cannot be simplified.

Given:

Consider the given expression is

\dfrac{\sqrt{32}+\sqrt{48}}{\sqrt{8}+\sqrt{12}}

To find:

The simplified form of the given expression.

Solution:

We have,

\dfrac{\sqrt{32}+\sqrt{48}}{\sqrt{8}+\sqrt{12}}

It can be written as

=\dfrac{\sqrt{16\times 2}+\sqrt{16\times 3}}{\sqrt{4\times 2}+\sqrt{4\times 3}}

=\dfrac{4\sqrt{2}+4\sqrt{3}}{2\sqrt{2}+2\sqrt{3}}

=\dfrac{4(\sqrt{2}+\sqrt{3})}{2(\sqrt{2}+\sqrt{3})}

=\dfrac{4}{2}

=2

Therefore, the simplified form of the given expression is 2.

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She worked a total of 15 hours. If she makes $15 per hour tutoring and $9 per hour at the grocery store and made a total of $159
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Answer:

11 hours she worked at the grocery store

Step-by-step explanation:

assuming,

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the number of hours worked at grocery store = y

which means,

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the amount she made at grocery store = y*$9

we have 2 equations

<em>total number of hours</em>

1) x+y= 15  

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2) x* $15+ y* $9= $159

From equation 1

x+y= 15  

x=15-y

<em>we replace this x value in equation 2</em>

x* $15+ y* $9= $159

(15-y)* $15+ y* $9= $159

(15*15)- 15y+9y=159

225-6y=159

225-159=6y

66=6y

66/6=y

<u>11=y</u>  <em>the number of hours she worked at grocery store. </em>

<em>we place y=11 in our derived x equation</em>

x=15-y

x=15-11

<u><em>x=4 </em></u><em>the number of hours she worked at tutoring. </em>

3 0
3 years ago
WILL GIVE BRAINLIST!<br> Which set of ordered pairs shows a functional relationship?
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( 6x ^2 - x + 3 ) +( - 2x + x^2 - 7 )​
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Answer:

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Step-by-step explanation:

<u>Step 1: Write expression</u>

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<u>Step 2: Combine like terms (x²)</u>

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<u>Step 3: Combine like terms (x)</u>

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A counting number is a multiple of 13 and is also divisible by 4 and 6. What is the smallest number that satisfies these conditi
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Answer:

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3 years ago
Duke has a spinner that is divided into six equal-sized sections. Each section is a different color. He spun the spinner multipl
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Answer:

C. 1/6

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If the previous number of trials were given then the probability would have been different.

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