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Vsevolod [243]
3 years ago
8

I do not understand this im lost

Mathematics
2 answers:
mote1985 [20]3 years ago
7 0
In such type of questions, all that you are supposed to do is, use basic mathematics to eliminate any one of the given two variables. Check out the equations if in case you can multiply any of the given ones with a -1 and add the two equations,eliminating one of the variables.
tester [92]3 years ago
4 0
2x-3y=9
-5x-3y=30
Multiply the first equation by negative one to cancel out the Ys
-2x+3y=-9
-5x-3y=30
Add the equations
-7x=21
X=-3 plug in X in one of the original equations

2(-3) -3y=9
-6-3y=9
-3y=15
Y=-5
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A circle has a radius of 3. An arc in this circle has a central angle of 20°. What is the length of the arc? Either enter an exa
Semenov [28]

Answer:

\frac{\pi  }{3}

2 * \pi * 3  * \frac{20}{360}

120\pi/360 = \frac{\pi  }{3}

Step-by-step explanation:

5 0
3 years ago
Is x = 30 a solution for 120 = 4x <br> please show your work like this:<br> m−9+9=11+9<br><br> m=20
Alexus [3.1K]

Answer:

Yes. x = 30 is a solution for 120 = 4x

Step-by-step explanation:

If x is 30 you substitute the X next to the four for 30 that means you multiply 30 x 4 and you get 120 so X does equal 30

5 0
3 years ago
Read 2 more answers
What is the area of this figure?
MissTica
Okay so here's what you do. The arrows mean the the sides are the same length so the > line is 20in. And then they cut this up into 2 triangles and a trapezoid. BUT If you look closely 1 of the Triangles and the Trapizoid make a Parallelogram. The formula for finding the area of a Paralellogram is just b*h. So then you just need to find the area of the other triangle which would be 8*20/2 (the formula is b*h/2 for triangles) and then you add those to answers together. (So it's 20*16+8*20)
5 0
3 years ago
Art Club Flyer
Finger [1]

The area of Erin's circle to the nearest hundredth is 50.24 in².

<h3>What is the area of the circle?
</h3>

A circle is a bounded figure which points from its center to its circumference is equidistant.

Area of a circle = πr²

Where :

  • π = pi = 3.14
  • R = radius

3.14 X 4²

(3.14) (4) (4) = 50.24 in²

To learn more about the area of a circle, please check: brainly.com/question/14351152

#SPJ1

8 0
2 years ago
Read 2 more answers
What is the value of tan(A) in the diagram?
levacccp [35]
Tan is opposite divided by adjacent and then square root the division answer
6 0
3 years ago
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