Answer:

Step-by-step explanation:
Simplify to:

Multiply both sides by 7
2(x-2)=28x
Divide both sides by 2
x-2=14x
Subtract x from both sides
2=14x-x
Simplify 14x-x to 13x
2=13x
Divide both sides by 13

Answer:

A number is divisible by 9<span> if the sum of its digits is </span><span>divisible by 9
here the sum 39 not divisible by 9 </span>
Using the combination formula, it is found that there are 220 ways to decide which countries to skip.
The order in which the countries are skipped is not important, hence the <em>combination formula </em>is used to solve this question.
<h3>What is the combination formula?</h3>
is the number of different combinations of x objects from a set of n elements, given by:

In this problem, 3 countries are skipped from a set of 12, hence the number of ways is given by:

More can be learned about the combination formula at brainly.com/question/25821700
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10 books because the ratio is 2:5 and you have 4:x so x=10 ((:
Answer:
yellow 9/25
yellow and green is 14/25