Unit 8 Review 

Question I  got wrong: 

 

What I did the first time: 

1 : 972.5

x :   4

=0.001             Then I cross multiplied

What I should’ve done was:  

1 : 972.5

4 : x

=3890

Then I need to convert the measurement so I divide by 100

=38.9m

Helpful Website:

http://study.com/academy/lesson/what-is-a-scale-factor-definition-formula-examples.html

Helpful Video:

 

Demonstrating proportional reasoning: Question that I got correct 

Similar Triangles:

 

First I redrew the triangles separately so now there are 2 triangles.

Next I take the area from the 2 triangles and write out the ratio

2.4 : 3

x : 8

=6.4

Because it is asking how much farther up the wall will the ladder reach you have to subtract 6.4-2.4=4