Answer:
18 boys and 15 girls
Step-by-step explanation:
Since the ratio is 6:5 and there are 18 boys, you do 18/6=3
Then you do 5*3=15
Let the equal sides of the isosceles Δ ABC be x.
Given that the perimeter of Δ ABC = 50m.
Therefore, 2x + AC = 50 --- (1)
It is also given that the perimeter of Δ ABD = 40m.
Therefore, x + BD + AD = 40
BD is the median of the Δ ABC. Therefore, D is the midpoint of AC.
So AD = CD.
Or, AD = AC
Therefore,
Multiply both sides by 2.
2x + 2BD + AC = 80
From (1), 2x + AC = 50.
Therefore, 2BD + 50 = 80
2BD = 80 - 50
2BD = 30
BD = 15m.
The required expression is ~
let's solve ~
Answer:
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Step-by-step explanation:
Answer:
It will also be 35
Step-by-step explanation: