2 Step Equations
15x + 5 =50
3
12. 80 + 8.23 + .098 + 34.5 = ?
55.628
If I am going from small to big what opperation am I using?
Give an example
I am multiplying..
I would multiply the numbers by the given scale factor to make my shape bigger.
If the scale factor is 4
and the shape is a square with 6 inches all around.. what is the enlarged version?
24 inches = new shape of the square
|-40| + |50| = ?
90
2x + 30 = 120
45
9.026 + 12.821 + .9 + 3.56 =
26.307
What do we call a unknown number represented by a letter?
A variable
When you have a fraction as the scale factor.. how do you solve that?
Example: Scale factor is 3/4
You always take the bottom number of the fraction and use that to either multiply or divide based on the problem.
273 DIVIDED BY 21
13
12x + 12= 3x + 84
x=8
12.82 - 9.78
3.04
If two shapes are congruent what does that mean?
If two shapes are congruent... they are the same shape and same size.. also have the same measurements.
The scale factor is 1/4 MULTIPLIED BY 8 = ?
32 inches
-80 + 45
-35
10 - 6v= 104
19
24.9843
What is the first step in a multi step equation?
To use the distributive property and multiply all numbers by outside number.
Scale Factor is 2/7
Divided by 84 = ?
12
Solving Equations
-45 = x + 4
x=-7
6h + 16 = 46
h=5
647.1 Divided by 9
71.9
When adding a negative and positive number.. how do you know what your answer will be?
You will always keep the sign of the bigger number.
In your own words, explain to me what the purpose of scale factor is :
We use scale factor to .....
We use scale factor to help us figure out the size of a new shape. We use it to help make things bigger or smaller.
Ashley bought 4 packs of red bouncy balls, 3 packs of yellow bouncy balls, and 4 packs of green bouncy balls. There were 2 bouncy balls in each package. How many bouncy balls did Ashley buy in all?
22 boucy balls in total
4 packs x 2 balls in each pack = 8
3 packs x 2 balls in each pack =6
4 packs x 2 balls in each pack = 8
Add all of those together and you get 22 bouncy balls