+0  
 
+1
110
4
avatar+952 

3. Triangle ABC is taken to triangle A'B'C' by a dilation. Which of these scale factors for the dilation would result in an image that was larger than the original figure?

 

A. 3/5

 

B. 13/17

 

C. 1

 

D. 4/3

 

 

 Mar 23, 2020
 #1
avatar+111330 
+2

GM....just find  the fraction  that is  greater than 1......this will make the new figure larger than the original

 

Which one is it   ???

 

 

cool cool cool

 Mar 23, 2020
 #3
avatar+952 
0

The second problem was the one I needed help with. For the first problem, the answer will be 4/3 which is greater than one and would result in an image larger than the original.

GAMEMASTERX40  Mar 23, 2020
 #4
avatar+111330 
+1

Good job, GM  !!!!

 

 

cool cool cool

CPhill  Mar 23, 2020
 #2
avatar+111330 
+2

Second one

 

The scale  factor is  3/4

 

We can prove this with the following :

 

4/ x  = 3/y

 

4/6 = 3/y

 

2/3 = 3 / y     rearrange as

 

y = 3 /(2/3)

 

y = 3*3/ 2

 

y = 9/2

 

y = 4.5

 

And  note  that   4 * (3/4)  =  3

 

And 6  * (3/4)  =  18/4 = 9/2 =  4.5

 

 

cool cool cool

 Mar 23, 2020

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