Joshua is creating a series of rectangles, one inside the other. The length of the first rectangle, Rectangle A, is five inches. Joshua dilates Rectangle A about its center by a scale factor of two to get Rectangle B. He repeats this process using the same scale factor till he gets a rectangle of length 80 inches.

How many dilations did Joshua perform including the dilation of Rectangle A?

4

2

8

16

Question

Joshua is creating a series of rectangles, one inside the other. The length of the first rectangle, Rectangle A, is five inches. Joshua dilates Rectangle A about its center by a scale factor of two to get Rectangle B. He repeats this process using the same scale factor till he gets a rectangle of length 80 inches.
 
How many dilations did Joshua perform including the dilation of Rectangle A?

4

2

8

16

anonymous · Answer

his original length is 5
1st dilation:  5*2 = 10
2nd dilation:  5*2*2 = 20
3rd dilation:  5*2*2*2 = 40
4th dilation:  5*2*2*2*2 = 80

anonymous · Answer

o_o . is it that yur super duper smart or my brain is not working today

anonymous · Answer

no.... the above is just a guess

anonymous · Answer

yea but it makes sense.

anonymous · Answer

my guesses are good but when I actually do the work, it's wrong...

anonymous · Answer

i'm kidding!!!   :)

anonymous · Answer

no i did th work its right.

anonymous · Answer

lol can you help me with 2 more please?

anonymous · Answer

that means you're smart...

anonymous · Answer

post it up...  we'll help you... :)

anonymous · Answer

i knoe my moms tells me all the time its js my mind is everywhere today i usually dnt need this much help .

anonymous · Answer

and thank you very much ill post the next one now

anonymous · Answer

see?  mother knows best...