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Mamont248 [21]
3 years ago
8

3x+6y=-18

Mathematics
2 answers:
leva [86]3 years ago
4 0
-3x +2y=-22 is the answer

Dafna11 [192]3 years ago
4 0
The answer is -3x+2y=-22
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{(−1, 5), (2, 8), (5, 3), (13, −4)} what are the range
makkiz [27]
(x;\ y)\\\\(-1, \fbox5), (2, \fbox8), (5, \fbox3), (13, \fbox{-4})\\\\\boxed{The\ range:y\in\{-4;\ 3;\ 5;\ 8\}}
7 0
4 years ago
If four of the exterior angles of a convex pentagon measure
MakcuM [25]

Answer:

120 degrees.

Step-by-step explanation:

The 5 exterior angles sum to 360 degrees.

So the 5th exterior angle = 360 - 4(60)

= 360 - 240

= 120 degrees.

3 0
4 years ago
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-2x-9y=-25 -4x-9y=-23 system with elimination
REY [17]
Multiply the first equation by -2. It turns into 4x+18y=50 and the other one stays -4x-9y=-23. Then you "eliminate" the equations by "adding" them. Set it up like this: 
4x+18y=50
      +
-4x-9y=-23
4x-4x= 0. 18y-9y= 9y and 50-23= 27
SO: 9y= 27 and y= 3
And then you plug that in to one equation: 4x +18(3)= 50. 4x= 50-(18*3)
4x= -4, so x=-1.
Plug it back in to check! 
Hope this helps. Happy solving! :)
4 0
3 years ago
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I need help on this question
Setler79 [48]
N, O, S, and Z all have rotational symmetry
3 0
4 years ago
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The volume of a right triangular prism is 72 cubic feet. The height of the prism is 9 feet. The triangular base is an isosceles
Maslowich

Answer:

<h2>The area of the triangular base = 8 ft²</h2>

Step-by-step explanation:

The formula of a volume of a prism:

V=A_BH

A_B-area\ of\ a\ base\\H-height

We have

V=72\ ft^3,\ H=9\ ft

Substitute:

72=9A_B             <em>divide both sides by 9</em>

8=A_B\to A_B=8\ ft^2

3 0
3 years ago
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