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MakcuM [25]
3 years ago
9

X + 2y = 10 y=x-4 Choices are: (0,4) (2,6) (6,2) (8,0) Work shown

Mathematics
2 answers:
LuckyWell [14K]3 years ago
5 0

Answer:

C) (6,2)

Step-by-step explanation:

Rewrite equations:

y=x−4;x+2y=10

Step: Solve y=x−4for y:

y=x−4

Step: Substitute x − 4 for y in x+2y=10:

x+2y=10

x+2(x−4)=10

3x−8=10(Simplify both sides of the equation)

3x−8+8=10+8(Add 8 to both sides)

3x=18

3x

3

=

18

3

(Divide both sides by 3)

x=6

Step: Substitute6forxiny=x−4:

y=x−4

y=6−4

y=2(Simplify both sides of the equation)

Hope this helps!

:)

Fed [463]3 years ago
5 0
It is c(6,2) brainliest plzzz

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Alex787 [66]

Answer:

\frac{-4+2i}{5}

Step-by-step explanation:

We are given the expression, \frac{\sqrt{-4}}{(3+i)-(2+3i)}

On simplifying, we have,

\frac{2i}{3+i-2-3i}

i.e. \frac{2i}{1-2i}

Now, we will rationalize the expression,

i.e. \frac{2i}{1-2i}\times \frac{1+2i}{1+2i}

i.e. \frac{(2i)\times (1+2i)}{(1-2i)\times (1+2i)}

i.e. \frac{2i+4i^{2}}{1-4i^{2}}

Since, i^{2}=-1, we get,

i.e. \frac{2i-4}{1+4}

i.e. \frac{-4+2i}{5}

So, the simplified expression is  \frac{-4+2i}{5}.

3 0
3 years ago
David conducted a study of how many college students consume coffee everyday. What type of study is this and why?
Hitman42 [59]

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Step-by-step explanation:

hope this helps! (:

7 0
3 years ago
If -2 + y = 4, then y = 6.<br> What property
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Answer:

Step-by-step explanation: 2-56 (Point -2 + 4

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MA_775_DIABLO [31]

Answer:

60%

Step-by-step explanation:

To obtain the percentage, express her score as a fraction of the total and multiply by 100%, that is

percentage score = \frac{15}{25} × 100% = 60%


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