<h2>Ex 5</h2>
Simply multiply the equation by 6, in order to get rid of the denominators:

<h2>Ex 6</h2>
We have to rearrange the equation in the form

So that
is the radius, and
will be the diamater. We have to complete the squares: rewrite the equation as

You can see that
is the beginning of 
Similarly,
is the beginning of 
So, if we add 16 and 9 to both sides, the equation becomes

So, now we know that
, and thus the radius is 13, so the diameter is 26.
Not enough info. There is no way to solve for a variable with only other variables.
One way is that an inequality can have a dotted or solid line and another way is that you shade one side of the on an inequality.
Answer:
Soccer: 19 Males
Basketball: 29 females
Total: 40 males, 60 females
Step-by-step explanation:
MALES FEMALES TOTAL
SOCCER ║ 19 ║ 31 ║ 50 ║
BASKETBALL║ 21 ║ 29 ║ 50 ║
TOTAL ║ 40 ║ 60 ║ 100 ║
[OPTIONS ⇒ 19, 29, 40, 60]
<u>SOCCER:</u>
x + 31 = 50
50 − 31 = 19
<em>19 males</em>
<em />
<u>BASKETBALL</u>
21 + y = 50
50 − 21 = 29
<em>29 females</em>
<em />
<u>TOTAL:</u>
F: 31 + 29 = 60
M: 19 + 21 = 40
60 + 40 = 100
<em>60 females </em>
<em>40 males</em>