Friday, December 12, 2014

December 2014 / January 2015 Newsflash: Tips & Techniques


Upper Elementary and Middle School

Find the perimeter of the shape below. (Hint: there is enough information.)



Solution:

The length on the bottom of the rectangle is the same as the length on the top, although the top has been split into two pieces. Similarly the width on the left is 11 inches and the width on right is also 11 inches, again in two pieces. 

Now, the length of the side is given in inches and the length of the bottom is given in feet. Since we have to add to get the perimeter, the Law of SAMEness requires the units to be the same. Let’s change 2 feet into 24 inches (2 x 12). 

Note that it is not necessary to know the exact measurement of the length and width. All that matters is that we know the total length of each. 

With that, 11 in + 11 in + 24 in + 24 in = 70 inches.

Algebra 

If ax + 2a = c and x + 2 = 3, express a in terms of c

Solution

If ax + 2a = c, then a(x + 2) = c. Now, substitute “3” for “x + 2” and you get 3a = c
so a = c/3.

3 comments:

  1. Make your assignment submission more effective and impressive using assignment help services. This online assignment help service allows students to discuss their concerns with qualified Assignment Helper and finish their assignment on time. If you are stuck with your management assignments then you take our management assignment help.
    For more info please visit our website: https://fullassignment.com/
    or reach out us on whatsapp - (+1) 669-271-4848

    ReplyDelete
  2. During this post, you have shared fantastic content about abacus franchisee. This article provided me with some useful knowledge. Thank you for sharing that. Keep up the good work.

    ReplyDelete
  3. I appreciate your efforts which you have put into this article. Genuinely it is a useful article to increase our knowledge. Thanks for share an article like this.Preschool Edmonton

    ReplyDelete