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evablogger [386]
3 years ago
7

Choose the equation that is the standard form of

Mathematics
1 answer:
Ronch [10]3 years ago
7 0
For this case we have the following equations:
 5y = 3-2x
 5y-3 = -2x
 2x + 5y = 3
 2x + 5y-3 = 0
 The standard form of the equations is given by:
 Ax + By = C
 Therefore, the equation written in its standard form is:
 2x + 5y = 3
 Where,
 A = 2
 B = 5
 C = 3
 Answer:
 
The equation that is the standard form is:
 
2x + 5y = 3
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Find the value of x <br> a. 2<br> b. 4<br> c. 6<br> d. 8
tiny-mole [99]

Answer:

B, 4

Step-by-step explanation:

To do this you can use the Pathagaryos thereom a^2+b^2=c^2

So we have (x-2)^2+x^2=20

We can expand (x-2)^2 and get

x^2-4x+4

so we have x^2 -4x +4 + x^2=20

We can combine like terms and subtract 20 from both sides to get

2x^2-4x-16=0

We can factor this and get (2x+4)(x-4)

which means that x=4 and -2

Obviously the length can't be a negative and so we reject x= -2 and we get x=4

We can double check it and see that

(4-2)^2+4^2=20

and it does

8 0
3 years ago
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aksik [14]
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3 years ago
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3 0
3 years ago
13x + 2y - 6x + 8<br> A little help
storchak [24]

Answer:

7x + 2y + 8

......................................................................................................................................................................................................................................................................................................

5 0
2 years ago
Read 2 more answers
Factor completely.<br><br> 3x^2 −147=
erica [24]

Answer:

3(x - 7)(x+7)

Step-by-step explanation:

To factor this, you must first take out the GCF (Greatest Common Factor), that 3x^2 and -147 both have. The terms only have 3 in common, which can be divided with

3x^2 - 147\\3(x^2 - 49)

However, we're still not done since 49 is a perfect square and (x^2 - 49) can be split into 2, like so:

3(x - 7)(x+7)

If you're unsure about the final answer, you can multiply it all together to see if you got the original expression.

5 0
2 years ago
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