Answer:
✑ 
Let us consider , there are 30 boys and 40 girls in a school. So, the ratio of number of boys to number of girls = 
and read as 3 is to 4. We can say , the ratio compares two of more quantities of same unit. Until two quantities have same units , it is meaningless to compare by ratio. So, to find the ratio of two quantities , it is necessary to express them in same unit or of same kind. Since , they are in division form. So ,ratio is unit less quantity. Thus , the ratio is a comparison of two quantities of the same kind in division which doesn't have any units. For example : 
is a ratio and is read as ' a is to b ' in which ' a : is antecedent and ' b ' is called consequent.
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☪ 
£ 21 is to be divided between Amy and Ben in the ratio 5 : 2. So, let Amy get £ 5x and Ben get £ 2x.
Then , According to the question , 
Solve for x :
⇝ 
⇝ 
⇝ 
The value of x is 3. Now , substitute the value of x in 5x :
Amy received £ 5x = 5 × 3 = £ 15 .
☥ 
Hope I helped ! ツ
Have a wonderful day / night ♡
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171/9=19mph hope it helps
Y=9(x^2+3x-x-3)
y=9(x^2+2x-3)
y=9x^2+18x-27
Answer: -8
Explanation: If g(x) = x² + 2x - 8, then g(-2) = (-2)² + 2(-2) - 8
which simplifies to 4 + (-4) - 8 or 0 - 8 which is -8.
Remember to always use parentheses when
substituting your given value in for <em>x</em>.
Answer:
A
Step-by-step explanation:
2√6 + 4
