Answer:
5h - 2
<em>(</em><em>5</em><em>×</em><em>1</em><em>2</em><em>)</em><em>-</em><em>2</em>
<em>6</em><em>0</em><em>-</em><em>2</em>
<em>=</em><em><u>5</u></em><em><u>8</u></em>
First, you need to find out how many zippers are used to make one bookbag. To do that, you divide the zippers used to make the 3 backpacks.
12 / 3 = 4
So, 4 zippers are used per bookbag. Then, you divide the number of available zippers by four to find out how many bags she can make.
48 / 4 = 12
Roberta can make 12 bookbags.
Answer:

Step-by-step explanation:
The magnitude of 3D vector
can be given by the following:

Plugging in given values, we have:
.
B. 5:10 because 15-5=10 which is the number of pencils with erasers and the 5 left are the amount of pencils which are missing an eraser