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4 years ago

Nicholas wrote the steps below to simplify the fraction 20/30. Find his error and correct it.

2 answers:

6 0

He does not divide the numerator and the denominator by the same number. Nicholas divides 20 by 5 and 30 by 6. He ought to have divided 30 by 5 as well and then simplified.

P.S. Nicholas should have just divided both 20 and 30 by 10 to simplify in one step.

Nana76 [90]4 years ago

6 0

Hi there! :D

Let's simplify this together first!

20/30

We can divide both sides by 5 since both are divisible by 5.

You would divide both sides by 5.

20÷5= 4
30÷5=6

4/6, we can divide it by 2 to get: 2/3 <== that is the simplest fraction.

Nicholas' error was that he divided 20 by 5 and then 30 by 6. You would divide both by 5. You would change:

30÷6=5 to 30÷5=6

I hope this helps!
~kaikers

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Fn= 174.9 N : Magnitude of the net force the people exert on the donkey.

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Force of Jane in x =F₃x=125*cos45°= + 88.4 N (+x)

Force of Jane in y =F₃y=125*sin45°= + 88.4 N (+y)

Calculating of the components of the net force the people exert on the donkey.

Fnx= F₂x+F₃x=( - 58.19+ 88.4 )N=30.2N (+x)

Fny= F₂y+F₃y=( 58.19+88.4 ) = 146.59 N (+y)

Fnz =F₁z=90.5 N (+z)

Calculating of the magnitude of the net force the people exert on the donkey.

$F_{n} =\sqrt{(F_{nx})^{2}+(F_{ny}) ^{2} +(F_{nz}) ^{2} }$

$F_{n} =\sqrt{(30.2)^{2}+( 146.59) ^{2} +(90.5) ^{2} }$

$F_{n} = 174.9 N$

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