which is similar to n:1 where 
<u>Step-by-step explanation:</u>
Here we have to Express in the form n:1 give n as a decimal 21:12 . Let's find out:
Given ratio as 21:12 . Let's convert it into n:1 , where n is decimal
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{ dividing denominator & numerator by 4 }
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which is similar to n:1 where 
Answer:
16 : 14 = 30 : 26.25
Step-by-step explanation:
If rounded:
16 : 14 = 30 : 26
Approximately 68% of a normal distribution lies within one standard deviation of the mean, so this corresponds to students with scores between

.
Answer:
39°
Step-by-step explanation:
A radius of a circle (segment CD) drawn to the point of tangency (D) intersects the tangent (line DE) at a 90-deg angle.
That makes m<D = 90.
m<D + m<C + m<E = 180
90 + 51 + m<E = 180
m<E = 39
Answer:
55 - you multiplied 6 by 11 to get 66 so you multiply by 5 by 11 to get 55.