Given:
5 students are able to share 20 crayons.

For 30 students,

Answer: There are 120 crayons are needed for 30 students.
Answer:

Step-by-step explanation:
Let's use the sine law to calculate x.

click on <em>p</em><em>i</em><em>c</em><em>s</em><em> </em><em><u>c</u></em><em><u>l</u></em><em><u>i</u></em><em><u>c</u></em><em><u>k</u></em><em><u> </u></em>on pics
GodBless c:
So 2x+12=5x-9
you want all of the unknowns on one side and all of the known values on the other or
subtract 2x from both sides
12=3x-9
add 9 to both sides
21=3x
divide both sides by 3
7=x