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Akimi4 [234]
3 years ago
14

X + y=-4 X +2y=13 Using elimination method

Mathematics
1 answer:
laila [671]3 years ago
6 0
\begin{array}{lrlll}
x+y=-4&\times -1\implies &-x-y=4\\
x+2y=13&\implies &\ x+2y=13\\
&&\textendash\textendash\textendash\textendash\textendash\textendash\textendash\textendash\textendash\textendash\textendash\\
&&\boxed{?}+\boxed{?}=\boxed{?}
\end{array}
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PLEASE HELP ASAP!!<br><br> Solve the equation<br><br> |x−7|=8
steposvetlana [31]

here you go -brainliest

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4 years ago
Suppose that a regression line for some data transformed with logarithms predicts that when x equals 4, log(y) will equal 3.331.
deff fn [24]

Option D

The regression line predicts that at x = 4, y equals 2143

<em><u>Solution:</u></em>

Given that when x equals 4, log(y) will equal 3.331

To find: Find y when x equals 4

Since we have given that,

When x = 4,

\text{ log } y = 3.331

We need to find the value of 'y' when x = 4

log_{10}y = 3.331

Since it is logarithmic function with base 10, Raise to power of 10 on both sides,

10^{log_{10}y} = 10^{3.331}\\\\\text{10 power log base 10 cancels, we get }\\\\y = 10^{3.331}\\\\y = 2142.89

On rounding to nearest whole number, we get 2143

Thus Option D is correct

7 0
3 years ago
The ratio of girls to boys in the coed soccer league is 3:7. Choose True or
expeople1 [14]

Answer:

It is true!

3 = girls

7 = boys.

6 0
3 years ago
Read 2 more answers
What is the function rule that describes the pattern in the table?<br><br> ( Please hep ;-; )
AlexFokin [52]
So c and d are out because it can not be x equals. and the slope goes up by positive 2.85 because every time the y values increase. so the answer is A. 
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4 0
4 years ago
ILL BRAINLIEST YOU PLEASE HELP
liubo4ka [24]

Answer:

You will need to compare the two expressions

4x + 7 = 6x - 16

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7 = 2x - 16

+16      +16

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divide by 2 on both sides

11.5 = x

Let's double check!

4 x 11.5 = 46, 46 + 7 = 53

6 x 11.5 = 69, 69 - 16 = 53

IT WORKS!

Therefore,

11.5 = x!!!!!

4 0
3 years ago
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