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3 years ago

What is the benefit of dividing out greatest common factors (GCFs) before multiplying?

Mathematics

2 answers:

victus00 [196]3 years ago

8 0

Answer:lets use 24/30 x 30/60

Without dividing out GCFs you would get 24x12 over 30 x 60 which is 288/1800

With dividing out GCFs you get 2/1 x 5/1 Which is 7

Step-by-step explanation:

Nina [5.8K]3 years ago

7 0

Lets get an example, for this example lets use 24/30 x 30/60
Without dividing out GCFs you would get 24x12 over 30 x 60 which is 288/1800
With dividing out GCFs you get 2/1 x 5/1 Which is 7 :)

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3 years ago

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Answer:

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Step-by-step explanation:

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3 years ago

g A random sample of 100 students was taken. Eighty-five of the student in the sample experienced anxiety during the exam. We ar

BaLLatris [955]

Answer:

The test statistic is $z = 1.25$

Step-by-step explanation:

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$H_0: p = 0.8$

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$H_a: p > 0.8$

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$z = \frac{X - \mu}{\frac{\sigma}{\sqrt{n}}}$

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80% is tested at the null hypothesis:

This means that $\mu = 0.8, \sigma = \sqrt{0.2*0.8} = 0.4$

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This means that $n = 100, X = \frac{85}{100} = 0.85$

The test statistic is

$z = \frac{X - \mu}{\frac{\sigma}{\sqrt{n}}}$

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3 years ago

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3 years ago

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