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Free_Kalibri [48]
3 years ago
7

What is the value of X? Make sure to show all of your work!

Mathematics
1 answer:
Rzqust [24]3 years ago
4 0
Since this is a equilateral triangle all angles are equal to each other. All angles in a triangle always add up to 180 degrees.

So you would set up your equation like so
3(7x - 3) = 180
The 3 outside the parenthesis resembles the 3 angles.
You equal the equation to 180 since all the angles in a triangle = 180
So distribute the 3
21x - 9 = 180
Add 9 to both sides
21x = 189
Divide 21 on both sides
x = 9
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Answer:51 Groups

Step-by-step explanation:

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5 0
3 years ago
Analyze the student’s work. Is the answer correct? Explain.<br><br> Ik its not B
neonofarm [45]

Answer:

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Step-by-step explanation:

6 0
2 years ago
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notka56 [123]
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6 0
3 years ago
Please help!!!!!
sergeinik [125]

-8.1

Step-by-step explanation:

\frac{ - 4}{9} x + 2.4 = 6

<em>Times </em><em>all </em><em>by </em><em>9</em><em> </em><em>to </em><em>get </em><em>rid </em><em>of </em><em>fraction</em>

<em>- 4x + 21.6 = 54</em>

<em>Take </em><em>2</em><em>1</em><em>.</em><em>6</em><em> </em><em>away</em><em> </em><em>from</em><em> </em><em>both</em><em> </em><em>sides</em>

<em>- 4x = 32.4</em>

<em>Divide</em><em> </em><em>by </em><em>-</em><em>4</em>

<em>x =  - 8.1</em>

8 0
2 years ago
Read 2 more answers
If you are able to help that will be great:)
Schach [20]
1. 14.3-2*5²÷5=14.3-10=4.3
2. Result is Twenty one
7 0
3 years ago
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