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Ghella [55]
3 years ago
11

Simultaneous eqations 3x + y = 7 2x + y = 6

Mathematics
1 answer:
bearhunter [10]3 years ago
3 0

Answer:

Hey there!

3x+y=7

2x+y=6

3x+y=7

-2x-y=-6

Add these two equations vertically so the y terms cancel out (this is known as the elimination method)

x=1

3x+y=7

3(1)+y=7

3+y=7

y=4

(x=1, y=4)

Hope this helps :)

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Answer:

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Step-by-step explanation:

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8 0
3 years ago
Here please helppppppppppppp
skelet666 [1.2K]

Answer:

  • Part 2 - ∠EGF = 105°
  • Part 3 - ∠D = 65
<h3>________________________________________________</h3>

Step-by-step explanation for Part-2:

<u>We know that:</u>

  • ∠EFG = 32°
  • ∠AEG = 137°
  • ∠EFG + ∠FGE + ∠GEF = 180°

<u>Work:</u>

  • ∠EFG + ∠FGE + ∠GEF = 180°
  • 32 + ∠FGE + (180 - 137) = 180°
  • => 32 + ∠FGE + 43 = 180°
  • => 75 + ∠FGE = 180°
  • => ∠FGE = 180 - 75
  • => ∠FGE = ∠EGF = 105°

Hence, the measure of ∠EGF is 105°.

<h3>________________________________________________</h3>

Step-by-step explanation for Part-3:

<u>We know that:</u>

  • CD = CA
  • This triangle is an isosceles triangle.
  • ∠D = ∠A

<u>Work:</u>

  • 50 + ∠D + ∠A = 180
  • => ∠D + ∠D = 130
  • => 2∠D = 130
  • => ∠D = 130/2
  • => ∠D = 65

Hence, the measure of ∠D is 65°

<h3>________________________________________________</h3>
7 0
2 years ago
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vlada-n [284]
Hope this helps..!!!

4 0
3 years ago
Can someone please help me answer this because it is due in a couple of minutes. Please help
Mama L [17]

Answer:

X=-2

Step-by-step explanation:

Hope it helps

4 0
3 years ago
Is x = 9 in the solution set of the inequality x + 14 &lt; 20<br> Yes or no
notsponge [240]

Answer: No

Step-by-step explanation:

Data: x+14<20

x=9? Is what your trying to find

<u>Step one, Isolate x by subtracting 14 on both sides</u>

X+14-14<20-14=X=6

Reason: Since you are trying to find if x=9, you have to isolate it. The way to do that is to get rid of +14 by subtracting it by 14. However, since what you do to one side you do to the other, you subtract +20 by 14 to get 6.

Since x=6 isn't x=9, the answer is No

Answer: No

I hope this helps!

7 0
3 years ago
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