LOG PROBLEM
Evaluate the following expression:
2n – 3(5n +9)
Solution:
2n -15n -27
-13n - 27
WORK TODAY
We did a few more problems dealing with the Distributive Property. We then discussed the formula for Perimeter of a Rectangle and copied it. The class then measured the length and width of their desks and binders. They used those measurements and the formula to calculate Perimeter.
Formula for Perimeter of a Rectangle: Perimeter = 2 (length + width)
Example problem:
Show formula work for a rectangle with a width of 10 cm and a length of 15 cm
P = 2 (l +w)
P = 2 (10 cm + 15 cm)
P = 2 (25 cm)
P = 50 cm
HOMEWORK
Show formula work for calculating the perimeter of the following rectangles:
1.) l = 2 cm, w = 4 cm
2.) l = 4 cm, w = 6 cm
3.) l = 6cm, w = 8 cm
