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Ierofanga [76]
3 years ago
12

In a class,three fifths of the children are girls.what percentage are boys.

Mathematics
2 answers:
sertanlavr [38]3 years ago
5 0

Answer:

4/5

Step-by-step explanation:

strojnjashka [21]3 years ago
5 0

Answer:

40%

Step-by-step explanation:

If 3/5 = .06 are girls

that means

2/5 = .04  are boys

now

5/5 = 1 are the total children

Finally find the percentage

(.06)(100) = 60% girls

(.04)(100) = 40% boys

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Mrac [35]

Answer:

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Step-by-step explanation:

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we divide the coefficient of the X by half :

in this case: 6/2 = 3 , then we do the following

The result obtained is raised to square power:  3^2=9

we sum and subtract by 9 to maintain the balance of the equation:

x^{2}+6x+9-9-5=0

we have:

(x+3)^{2}-9-5=0

(x+3)^{2} = 14

lets apply square root on both sides of the equation:

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we know:

\sqrt{a^{2}} = abs(a)

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abs(x+3)=\sqrt{14}

from where two solutions are obtained

x_{1} + 3 =\sqrt{14} \\\\x_{2} + 3 =-\sqrt{14}

finally we have:

x_{1} =-3 +\sqrt{14} \\\\x_{2} =-3 -\sqrt{14}

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The ratio of boys to girls in a class is 5 to 6 which is an equivalent. Ratio
Vlad1618 [11]
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