Answer: 4:5
Step-by-step explanation: First find a number 12 and 15 can both be divided by. I found 3, and did the following:
12/3=4
15/3=5
The ratio of boys to girls in Luka's math class is 4:5
The image of (-1, 0) after a reflection over the line y = -x is (0, 1).
<h3>What is a transformation?</h3>
In Mathematics, a transformation can be defined as the movement of a point from its original (initial) position to a final (new) location. This ultimately implies that, when an object is transformed, all of its points would be transformed as well.
<h3>The types of transformation.</h3>
Generally, there are different types of transformation and these include the following:
- Reflection
- Rotation
- Translation
- Dilation
<h3>What is a reflection?</h3>
A reflection can be defined as a type of transformation which moves every point of the object by producing a flipped but mirror image of the geometric figure.
In Geometry, a reflection over the y-axis is given by this rule (x, y) → (-x, y). Thus, line y = -x would become:
(-1, 0) → (0, 1).
Read more on transformation here: brainly.com/question/1548871
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Hey There!
Remember, first find the gcf of 4,3 in this problem it is 12.
Steps to solve
1.6
- 3
2.6
- 3
= 2
So, The answer is <span>2
</span>
Hope This Helps :)