Answer:
The answers are
and
.
Step-by-step explanation:
Proportions are fractions that can be made by using the given numbers, which in this case are 2, 5, 8, and 20. Let's pair each one with the other three and then simplify if possible.
First, let's begin with 2:



Then, let's do 5:



Note that we already have
, so we do not need to include an additional one.
Now, let us do 8:



See how we already have
, so we won't have to include that as well.
Finally, let's do 20:



Now see that we already have both
and
, so we won't have to include both of them, as they are both extras.
Hence, the answers are
and
.
<h2><u><em>
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The value of x is 3.8
<em><u>Solution:</u></em>
<em><u>Given equation is:</u></em>

We have to solve the equation for "x"
Move the terms so that you end up with only terms involving x on one side of the sign and all the numbers on the other
Therefore, we get
x + 7.4 = 11.2
When we move 7.4 from left side to right side of equation it becomes -7.4
x = 11.2 - 7.4
Subtract 7.4 from 11.2
x = 3.8
Thus value of x is 3.8
There is a 1/3 chance. Because there are 3 coins