Scale Drawings
If a square has side lengths of 5 units and the scale factor is 10, what are the side lengths of the scaled copy?
50 units
Straight line, through the origin
True or false: (-5.2) + 5.2 = 0
True
Solve each
1. p + 12 = 17
2. 12x + 10 = 70
3. x/4 - 9 = -6
1. 5
2. 5
3. 12
1. How many degrees are in a triangle?
2. How many degrees are in a straight line?
3. How many degrees are in a right angle?
4. How many degrees are in a circle?
1. 180
2. 180
3. 90
4. 360
Side length 4, scaled factor 1/2, new side length?
Find 20% of 68
13.6
Solve
-16 + 9 =
12 - (-8) =
7 + (-4) =
-10 - (-2) =
-7
20
3
8
Lin is selling boxes of cookies. Each box costs $3.75. Lin’s goal is to earn more than $30 selling cookies. Write an inequality to describe the number of boxes, b Lin has to sell in order to reach her goal.
b > 8
A square pyramid is sliced parallel to the base half way up the pyramid. What shape is the cross section?
A square, smaller than the base
What equation would give you the perimeter of a rectangle?
l + l + w + w = P OR 2l + 2w = P
If 10 spring rolls will feed 5 people, how many people will 72 spring rolls feed?
If a seagull is 50 feet above sea level and a fish is 20 feet below sea level, what is the difference in their elevation?
70 feet
Simplify this expression:
6x + 1 - (3x - 1)
3x + 2
If two angles are vertical and one of them is equal to 45*, what is the measure of the other angle?
45*
Rectangle A measures 9 inches by 3 inches. Rectangle B is a scaled copy of Rectangle A. Name two measurement pairs that could be the dimensions of Rectangle B. Label your scale factor!!
18 x 6 SF = 2
27 x 9 SF = 3
4.5 x 1.5 SF = 1/2
and more!
If your graph is labeled with an x axis representing time in minutes and a y axis representing how many gallons of water can come out of a faucet, what would your constant of proportionality represent?
How much water can come out of the faucet per minute
Solve
(-18/3)
-7(-9)
4(12)
-6
63
48
A food pantry is making packages. Each package weighs 64 pounds. Each package contains 4 boxes. Each box contains a 7-pound bag of beans and a bag of rice. The bags of rice are all identical.
Write an equation to represent the situation.
4(x + 7) = 64
1. Supplementary angles add up to...
2. Complementary angles add up to...
1. 180*
2. 90*
Tyler has two different maps of Ohio.
• The scale on the first map is 1 cm to 10 km. The distance from Cleveland to Cincinnati is 40 cm.
• The scale on the second map is 1 cm to 50 km.
What is the distance from Cleveland to Cincinnati on the second map? Explain your reasoning.
8 cm
If the point on a graph is represented by the pair (6, 16.50) and the scale factor is 1/6, what are the new points?
(1 , 2.75)
List all the TRUE statements. There are 2
A. 2.3 + (-2.3) is equal to zero.
B. (-3.7) + (-4.1) is positive.
C. -2.6 – (- _12 4 ) is positive.
D. _ 5 2 + (-2.5) is negative.
E. 72 – (-100) is negative
A and C
Expand
-1/4 (-8x + 12y)
Factor
36a - 16
2x - 3y
4(9a - 4) or 2(18a - 8)
Describe in detail how you would find the surface area of a rectangular prism. Use geometric vocabulary in your explanation!
You find the area of the base, multiply that by 2
You find the area of one of the other faces, multiply that by 4
Add together the products of the 2 problems above to find the surface area!