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3 years ago

Solving each system by substitution. 6x+8y=-22 y=-5

Mathematics

1 answer:

MAXImum [283]3 years ago

6 0

6x+8(-5)=22
6x -40 =22
6x= 22 +40
6x= 62
X= 62/6
X= 10.3

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Find the perimeter of triangle ABC.

Harlamova29_29 [7]

By definition, the perimeter of the triangle is the sum of its sides.
We must then use the formula of distance between points:
$d = \sqrt{(x2-x1) ^ 2 + (y2-y1) ^ 2}$
We now look for the longitus for each of the sides:

For L1:
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$L1 = \sqrt{32} 
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$L1 = 4\sqrt{2}$

For L2:
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$L2 = \sqrt{50}$
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For L3:
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Then, the perimeter is given by:
P = L1 + L2 + L3
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$P = 4\sqrt{2} + 5\sqrt{2} + \sqrt{82} 

P = 9\sqrt{2} + \sqrt{82}$

Answer:
the perimeter of triangle ABC is:
none of the above.

5 0

3 years ago

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katen-ka-za [31]

Answer:

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2 years ago

PLEASE HELP !!!!!!!!Solve the system of equations using the linear combination method.

vfiekz [6]

Answer:

The solution would be (5, -2)

Step-by-step explanation:

To use this method, start by multiplying the second equation by -1. Then add the two equations together.

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Now that we have the value of x, use it to solve either equation for y.

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3 years ago

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Leokris [45]

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3 years ago

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Sauron [17]

Answer:

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second part: y=2.08x

Step-by-step explanation:

1) 7.90 / 3 = 2.633333 (I rounded to 2.63)

2) 18.70 / 9 = 2.07777 (I rounded to 2.08)

I hope this what you were asking

3 0

3 years ago