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Lostsunrise [7]
4 years ago
9

Find the solutions to x2 = 12

Mathematics
1 answer:
nasty-shy [4]4 years ago
6 0

Answer:

x = ± 2\sqrt{3}

Step-by-step explanation:

Given

x² = 12 ( take the square root of both sides )

x = ± \sqrt{12} = ± \sqrt{4(3)} = ± 2\sqrt{3}

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B: quadrant 3

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Step-by-step explanation:

7 0
3 years ago
What would the sum of -18-(-12) be?
Mademuasel [1]
-18-(-12)=-6 
Since there is two negative sign, it turns into positive meaning the -12 becomes positive 12 and the -18 stays same. So -18+12=-6 because 18 is bigger than 12 and it's negative so the final answer should be negative. 
Hint: when you see two negative sign just turn them into plus sign.  

7 0
3 years ago
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The ratio of the measures of the three angle in a triangle is 15:8:13. Find the measure of the three angles.
Angelina_Jolie [31]

Answer:

a=15x; b=8x; c=13x

180°=a+b+c=15x+8x+13x=36x

=> x=180÷36=5

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6 0
3 years ago
X-y+z=-4<br><br> 3x+2y-z=5<br><br> -2x+3y-z=15<br><br> How do I solve this?
Lera25 [3.4K]
1)\ \ \ x-y+z=-4\ \ \ \Rightarrow\ \ \ z=-4-x+y\\\\2)\ \ \ 3x+2y-z=5 \\.\ \ \ \  \Rightarrow\ \ 3x+2y-(-4-x+y)=5 \\.\ \ \ \  \Rightarrow\ \ 3x+2y+4+x-y=5 \\.\ \ \ \  \Rightarrow\ \ 4x+y=1\\\\3)\ \ \ -2x+3y-z=15\\.\ \ \ \  \Rightarrow\ \ -2x+3y-(-4-x+y)=15\\.\ \ \ \  \Rightarrow\ \ -2x+3y+4+x-y=15\\.\ \ \ \  \Rightarrow\ \ -x+2y=11\\--------------------\\

z=-4-x+y\\.\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ and\\ \left \{ {{4x+y=1\ \ \ \ } \atop {-x+2y=11\ /\cdot4}} \right. \\\\\left \{ {{4x+y=1\ \ \ \ } \atop {-4x+8y=44}} \right. \\-------\\y+8y=1+44\\9y=45\ /:9\\y=5\\\\-x+2y=11\ \ \ \Rightarrow\ \ \ x=2y-11\ \ \ \Rightarrow\ \ \ x=2\cdot5-11=-1\\\\z=-4-x+y=-4-(-1)+5=-4+1+5=2\\\\Ans.\ x=-1\ \ \ and\ \ \ y=5\ \ \ and\ \ \ z=2
5 0
3 years ago
4. 150 men working in a factory produce 6000 articles in 15 working days. How long will it take, a. 50 men to produce the 6000 a
sergiy2304 [10]
<h2><u><em>Answer:</em></u></h2><h2><u><em></em></u></h2><h2><u><em>work done by 150 men on 1 day=6000/15.</em></u></h2><h2><u><em></em></u></h2><h2><u><em>work done by 1 man on 1 day=6000/(15*150).</em></u></h2><h2><u><em></em></u></h2><h2><u><em>work done by 50 men on 1 day=(6000*50)/(15*150).</em></u></h2><h2><u><em></em></u></h2><h2><u><em>let X days taken to produce 6000 articles by them, then</em></u></h2><h2><u><em></em></u></h2><h2><u><em>((6000*50)/(15*150))X=6000.</em></u></h2><h2><u><em></em></u></h2><h2><u><em>on solving X=45 days.</em></u></h2><h2><u><em></em></u></h2><h2><u><em>So 45 days will take for 50 men to produce 6000 articles.</em></u></h2><h2><u><em></em></u></h2><h2><u><em>Please mark me Brainliest</em></u></h2>
6 0
2 years ago
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