2 years ago

in your math class there are 2 Boys for every 3 girl.which of the following be the ratio of Boys and girl in the class?

Mathematics

2 answers:

Diano4ka-milaya [45]2 years ago

8 0

Answer:

B. 14/21

Step-by-step explanation:

They are multiplied by 7 because,

BOYS : 2x7=14

GIRLS : 3x7=21

4vir4ik [10]2 years ago

4 0

Answer:

B. 14/21

Step-by-step explanation:

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max2010maxim [7]

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8 0

2 years ago

Solve for x. (e^x-e^-x)/((e^x+e^-x)=t

Sergio [31]

$\dfrac{e^x-e^{-x}}{e^x+e^{-x}}=t\\\\
\dfrac{e^{2x}-1}{e^{2x}+1}=t\\\\
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e^{2x}-1=e^{2x}t+t\\\\
e^{2x}-e^{2x}t=t+1\\\\
e^{2x}(1-t)=t+1\\\\
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x=\dfrac{\ln\left(-\dfrac{t+1}{t-1}\right)}{2}\qquad t\in(-1,1)



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