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3 years ago

11x - 6y = -19 -11x + 5y = 14

Mathematics

1 answer:

Vsevolod [243]3 years ago

5 0

Answer:

y=5

Step-by-step explanation:

Use the process of deletion. It means to add all the like variables. 11x+(-11x) is just 0 so it cancels out. -6y+5y is -y. -19+14 is -5. This leads to -y=-5. The variable can NEVER be negative. To get rid of the negative, just divide by -1 on both sides.

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XZ = 15 and the perimeter of XWZ is 50. What is the length of WZ?

Rom4ik [11]

Answer:

17.5

Step-by-step explanation:

The perimeter is the sum of the side lengths:

perimeter = XZ +WZ +WX

The figure shows us WX = WZ, so we can rewrite the formula as ...

perimeter = XZ +2·WZ

Filling in the given values, this becomes ...

50 = 15 + 2·WZ

35 = 2·WZ

35/2 = WZ = 17.5

The length of WZ is 17.5 units.

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3 years ago

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Step-by-step explanation:

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Answer & Step-by-step explanation:

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3 years ago

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Answer:

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Step-by-step explanation:

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