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Wittaler [7]
4 years ago
7

How do you solve this?

Mathematics
1 answer:
Law Incorporation [45]4 years ago
6 0
Find the soluiton

2x+2y=16
3x-y=4

x+y=8
<u>3x-y=4+</u>
4x=12
x=3
3(3)-y=4
9-y=4
y=5
(3,5)
test them to see if get true statment
obviously the first equatons of 1,2,4 work
1 doesn't work
2, works
4. doesn't work

2 is the same as the first except both euations are just doubled

answer is 2
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Step-by-step explanation:

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Which expression is equivalent to 4/2. -2/3​
VashaNatasha [74]

A.) There are many different expressions that can be equivalent to 4/2 and -2/3, but you just need one expression. <em>4/2 is equivalent to 2/1 and -2/3 is equivalent to -4/6.</em>

Reason:

There are two ways you can find a fraction equivalent to another.

1.) First one is by reducing the fraction if possible.

Example: <em>5/10=1/2, 10/30=1/3, 9/16=3/4.</em>

<em />

2.) The second one is by multiplying the numerator and the denominator by the same number, usually by 2 or 3.

Example: <em>1/2 x 2/2 = 2/4, </em> so <em>1/2= 2/4.</em> Another: <em>1/3 x 3/3 = 3/9</em>, so <em>1/3=3/9</em>

<em>That said, 4/2 = 2/1 because it was reduced. While -2/3 = -4/6 because it was multiplied by 2/2. </em>

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Which equation describes the inverse of f(x) = 7x + 8?
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Given m\parallel nm∥n, find the value of x and y.
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Answer:

See below ↓↓

Step-by-step explanation:

<u>Finding x</u>

  • Both the angles containing the x variable are on the same side of the transversal
  • There is a property which states that : two angles on the same side of the transversal are supplementary
  • Therefore, they add up to 180°
  • ⇒ 8x + 12 + 2x + 18 = 180
  • ⇒ 10x + 30 = 180
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<u></u>

<u>Finding y</u>

  • The angles at the top are vertically opposite angles (VOA), meaning that they are equal
  • ⇒ 8x + 12 = 3y - 18
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