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mash [69]
4 years ago
15

4. Explain and correct the error made by a student who simplified this expression.

Mathematics
1 answer:
Fiesta28 [93]4 years ago
3 0

Answer:

I notice that the first equation has a 7x, term and the second equation has a -7x term. These terms will cancel if we add the equations together—that is, we'll eliminate the the x terms:

Step-by-step explanation:

2y+7x= -5 + 5y-7x=12

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Solve the following equations. Show your work. Submit to your teacher when you have completed the sheet.
DochEvi [55]

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1. y=3  

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3 years ago
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4 0
3 years ago
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| 2. On rectangle ABCD below, if A is located at
vovangra [49]

Answer:

-2

Step-by-step explanation:

Given that:

A = (3, 4) ; B = (7, 6)

In triangle ABCD, AB and BC are Perpendicular lines :

Slope AB = Rise / Run = (y2 - y1) / (x2 - x1)

y2 = 6 ; y1 = 4 ; x2 = 7 ; x1 = 3

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To obtain the slope of BC:

RECALL:

product of the slope of 2 Perpendicular lines = - 1

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HENCE, slope of BC = - 2

6 0
3 years ago
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