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Mars2501 [29]
3 years ago
11

Solve the following system by any method. -8x-8y=0 and -8x+2y=-20

Mathematics
2 answers:
laiz [17]3 years ago
7 0

Answer:

x=2\\y=-2

Step-by-step explanation:

-8x-8y=0

Solve -8x-8y=0 for x

-8x-8y+8y=0+8y

-8x=8y

x=-1y

-8x+2y=-20

Substitute -1y for x

-8(-1y)+2y=-20

8y+2y=-20

10y=-20

y=-2

Substitute -2 for y

x=-1y

x=-1(-2)

x=2

Goryan [66]3 years ago
3 0

<em>X=</em><em>2</em>

<em>y=</em><em>-</em><em>2</em>

please see the attached picture for full solution...

Hope it helps...

Good luck on your assignment....

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3 years ago
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Svetlanka [38]

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Step-by-step explanation:

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What formula is used to show lines are parallel<br>to one another?​
larisa86 [58]

Answer:

To figure out if 2 lines are parallel, compare their slopes. You can find the slope of a line by picking 2 points with XY coordinates, then put those coordinates into the formula Y2 minus Y1 divided by X2 minus X1. Calculate the slope of both lines. If they are the same, then the lines are parallel.

Step-by-step explanation:

To figure out if 2 lines are parallel, compare their slopes. You can find the slope of a line by picking 2 points with XY coordinates, then put those coordinates into the formula Y2 minus Y1 divided by X2 minus X1. Calculate the slope of both lines. If they are the same, then the lines are parallel.

3 0
3 years ago
Read 2 more answers
Please answer 2 and 3 !!
Usimov [2.4K]

(2) So we know Ethan uses 1/4 cup of milk for his cake. And if he needs to make 3 times the amount of 1 cake, he'll make 3 cakes today. So we multiply the amount of cakes (3) by the amount of milk needed (1/4)

3 * 1/4 = 3/4

Ethan will need 3/4 cups of milk.

(3) We know Isabella need's 2/5 of a gallon of the food to make 1 gallon.

She want's to make 5 gallons, so like the other problem, we multiply the amount of gallons (5) by the amount of food needed (2/5):

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6 0
3 years ago
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Degger [83]

Answer:

80/7776

Step-by-step explanation:

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now

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4 0
3 years ago
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