Hey there!
9:19
This is because there are 19 total people taking dance lessons - 9 + 10 - and there are 9 girls taking dance lessons, so the ratio is girls to total students, or 9:19
Hope it helps and have a great day!
Answer:
6
Step-by-step explanation:
72 divided by 12 equals 6
Random in sample each state and 53% identify each contain the number
The value 600 is 30 times as much as 20
<h3>Ratio and proportion</h3>
Ratio are written in terms of fractions. The expression 600 is how many times as much as 20 can be written as;
600 = x *20
where x is the required value or factor
20x = 600
Divide both sides by 20
20x/20 = 600/20
x = 30
Hence the value 600 is 30 times as much as 20
Learn more on ratio and proportion here: brainly.com/question/19994681
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The terms 9r^2 and 6r^2 are like terms. We add the numbers to the left of the "r^2" to get 9+6 = 15.
So 9r^2+6r^2 becomes 15r^2
The r^2 stays the same. We do not say something like r^2+r^2 = r^4. You might be thinking of r^2 * r^2 = r^(2+2) = r^4
When it comes to adding like terms, we keep the variables the same.
The other pair of like terms are 3r and 2r, so they add to 3r+2r = 5r
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Overall,
(9r^2+3r+6)+(6r^2+2r) = (9r^2+6r^2)+(3r+2r)+6
(9r^2+3r+6)+(6r^2+2r) = 15r^2+5r+6
