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Xelga [282]
3 years ago
11

Simplifying radicals

Mathematics
1 answer:
Xelga [282]3 years ago
8 0

♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️

\sqrt{12}  -  \sqrt{48}  =

\sqrt{12}  -  \sqrt{4 \times 12}  =

\sqrt{4 \times 3}  -  \sqrt{4 \times 4 \times 3}  =

\sqrt{ {2}^{2} \times 3 }  -  \sqrt{ {4}^{2} \times 3 }  =

2 \sqrt{3}  -  4\sqrt{3}  =

(2 - 4) \sqrt{3}  =

- 2 \sqrt{3}

♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️

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The greater of is 7 more than the lesser. three times the greater number is 5 more than r4 times the lesser number. Find the num
Ilya [14]
<h2>Steps:</h2>

(Let x = greater number and y = lesser number)

So this question is asking us for a system of equations. Using the info they provide, we can form these two equations:

x=y+7\ \textsf{("The greater of the numbers is 7 more than the lesser.")}\\3x=4y+5\ \textsf{("Three times the greater number is 5 more than 4 times the lesser number.")}

So for this, we will be using the substitution method. Since we know that x = y + 7, substitute x with (y + 7) in the second equation as such:

3(y+7)=4y+5

From here we can solve for y. Firstly, distribute 3 so that it multiplies with y and 7:

3y+21=4y+5

Next, subtract 3y on both sides of the equation:

21=y+5

Lastly, subtract 5 on both sides of the equation:

16=y

Now that we know the value of y, we can substitute it into either equation to solve for x:

x=16+7\\x=23\\\\3x=4(16)+5\\3x=64+5\\3x=69\\x=23

<h2>Answer:</h2>

<u>In short, 16 is the lesser number and 23 is the greater number.</u>

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Answer:D

Step-by-step explanation:

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Answer:

Colin will have £4,836.92 in his account after 3 years

Step-by-step explanation:

Please see the attached file for explanation

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