Answer:
$3.30
Step-by-step explanation:
Answer:
Answer for #10:
![y = 2 \: and \: x = 1](https://tex.z-dn.net/?f=y%20%3D%202%20%5C%3A%20and%20%5C%3A%20x%20%3D%201)
Answer for #1:
![x = 2 \: and \: y = - 1](https://tex.z-dn.net/?f=x%20%3D%202%20%5C%3A%20and%20%5C%3A%20y%20%3D%20%20-%201)
Step-by-step explanation:
In order to solve a simultaneous equation using the substitution method you have to:
Use one of the equation and substitute it into the other equation, in this case equation <em>B</em><em> </em>was substituted into equation <em>A</em><em>.</em>
<em>
</em>
Therefore since x = 1 - y, equation A would be:
![2(1 - y) - 3y = 7 \\ (2 - 2y) - 3y = 7 \\ - 2y - 3y = 7 - 2 \\ - 5y = 5 \\ y = - 1 \: and \: x = 2](https://tex.z-dn.net/?f=2%281%20-%20y%29%20-%203y%20%3D%207%20%5C%5C%20%282%20-%202y%29%20-%203y%20%3D%207%20%5C%5C%20%20-%202y%20-%203y%20%3D%207%20-%202%20%5C%5C%20%20-%205y%20%3D%205%20%5C%5C%20y%20%3D%20%20-%201%20%5C%3A%20and%20%5C%3A%20x%20%3D%202)
The scale factor of dilation from AB to EF is 0.25
<h3>How to determine the scale factor of dilation?</h3>
The given parameters are:
- EFJL is dilation of ABIK
- AB has a length of 12
- EF has a length of 3
From the above parameters, side lengths AB and EF are corresponding sides
This means that:
The scale factor of dilation (k) is
k = AB/EF
So, we have
k = 3/12
Evaluate
k = 0.25
Hence, the scale factor of dilation from AB to EF is 0.25
Read more about scale factors at:
brainly.com/question/15891755
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Y=-x^2 is non linear due to the x being squared