Asked by Woltia

On a school field trip, the school requires that there are 3 teachers for every 75 students. If 125 students attend the trip how many teachers are needed? Write and solve a proportion.

Triangle CAT is located at C (-5, 2), A (-4, 4), T (-1, 2). Find the coordinates of its image after a dilation with a scale factor of 4. (3 points)

Square ABCD was dilated to form square A’B’C’D’. What scale factor was used?
The answer to that one is two just come up with an explanation.

Tell whether the pair of polygons is similar. Explain why or why not.
The top and bottom of the two are 11 and 9.4 for the other one. The right and left are 10 and 8.4 for the other
Answered by Steve
class: 3/75 = x/125

CAT: just multiply all the coordinates by the scale value

ABCD: no idea, as there is no picture and no information

They are similar only if the ratio of the sides is the same. So, check whether
11/10 = 9.4/8.4
Answered by Woltia
@Steve thank you!
Answered by Woltia
1)3/75 = x/125;x=5
2)(-20,8 or -20,20)(-16,16)(-4,8)
3)2
4)111*8.4=10*9.4=92.4;94
so does 4 mean that it's similar?
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