The sample % of these two populations would be 100/size (of student body at each school) x 100 so this would compare the two student bodies preferences for the particular type of candy bar. However, the actual % of the whole student body at each school would be a factor also. If the high school only had 200 students then this would be 50% representative but if the middle school had say 500 students this would only be 20% representative so this would have to be taken into account too. It might be more representative to have the same % of the student bodies respectively for the sample.
Answer:
slope is zero equation is y=-3
Step-by-step explanation:
since there is no change in y and they cancel out so you just 0.
X equals 240 because you have to multiply by 40 on both sides to cancel out the 40 on the side with the x
the answer will be -19n+25. All you do is put 19 into the g spot and distribute from that point on into the parentheses. so -19 to n and multiply -19 and -1. after that you get -19 +19+6. you will then add like termsso 19 and 6 is 25. Final answer is -19n+25. Hope its right. Good Luck !
Answer:
C. not similar, dilations are involved
Step-by-step explanation:
For geometric figures, such as triangles, we generally study a couple of kinds of transformations.
One is the "rigid transformation" which lets us move, rotate, or reflect the figure any way we like, but we keep it the same size—as though it were cut from cardboard or anything else that holds its shape and size. Any figures transformed by a rigid transformation are <em>congruent</em>.
Another is very much like the "rigid transformation", but <em>dilation</em> is involved. That is, the figure is allowed to be stretched or shrunk <u>uniformly</u> (by the same factor in every direction). Figures transformed in this way are <em>similar</em>, but are not congruent.
In this diagram, your triangle has been reflected and <em>changed in size</em> by a different factor horizontally than vertically. Hence <em>dilation</em> is involved (answer choices A or C), but because the factors are different, the figures are <em>not similar</em> (answer choice C).
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<em>Comment on the answer choices</em>
Rotations may be involved in similarity transformations, too. For some reason, that possibility was left off of choices A and C. (On the other hand, rotation is equivalent to a suitable set of reflections.)