This document contains notes from a math lesson on January 23, 2014. It includes an assignment that is due the next day, examples of simplifying expressions and solving equations, information about calculating sales tax and finding the area of parallelograms. It also has example problems for finding the areas and perimeters of squares, rhombi, and dilated parallelograms.

1. Lesson 60.notebook
January 23, 2014
Assignment:
1-->Set 60 (evens) - Due Tomorrow [1/24]

2. Lesson 60.notebook
January 23, 2014
Lesson 60 Warm-Up:
3-2 x 2-2
1) Simplify:
2)
Simplify:
3)
Solve:
x(x + 1) - 1(x + 1)
3(x - 4) = 15
x = 0.7
3
5) What is the sales tax on an item that costs $315.90, if the
tax rate is 7%? [round to the nearest cent.]
4)
Solve:

3. Lesson 60.notebook
January 23, 2014
Lesson 60:
fyi...
area of a parallelogram - base x height [b x h]
must be
Perpendicular.
3 cm
4 cm
8 cm

4. Lesson 60.notebook
January 23, 2014
Lesson 60 Examples:
Find the area of the following parallelograms.
A)
6 in
7 in
7 in
B)
3 in
2 in
10 in

5. Lesson 60.notebook
January 23, 2014
C) The sides of a square and a rhombus are 3 cm each. The height
of the rhombus is 2 cm. Find the area and the perimeter of each.
SQUARE:
RHOMBUS:
A-
A-
P-
P-

6. Lesson 60.notebook
January 23, 2014
D) Find the area of a parallelogram with vertices at (4,2), (2,-2),
(-2,-2), and (0,2). Then find the area of a dilation of this
parallelogram with a scale factor of 3.
y
x