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2 years ago

1 1/2 x 1/2 = ? help me por favor <3

Mathematics

1 answer:

leva [86]2 years ago

8 0

Answer:

3/4

Step-by-step explanation:

Let's break it down

1 1/2 is a mixed number

How do we find the fraction form of mixed numbers?

We multiply the denomiator of the fraction part with the integer part and add the current number on the numerator to get your new numerator. The denomiator stays the same.

So in the case of 1 1/2, our new numerator is 2 x 1 + 1 = 3.

Thus, the fraction version is 3/2. Now we need to mulitply this by 1/2

3/2 x 1/2. We just have to multiply the numerator and demoniator

3 x 1 is our numerator

2 x 2 is our denomiator

3/4 cannot be simplified because the numerator and denomiator are both relatively prime (numerator is not divisible by denomiator and vice versa)

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2 years ago

Simplify -(-2a + 13) + (-9a - 2) - (-7a - 3)

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2 years ago

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A university administrator was interested in determining if there was a difference in the distance students travel to get from c

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Answer:

1) Fail to reject the Null hypothesis

2) We do not have sufficient evidence to support the claim that the mean distance students traveled to school from their current residence was different for males and females.

Step-by-step explanation:

A university administrator wants to test if there is a difference between the distance men and women travel to class from their current residence. So, the hypothesis would be:

$H_{o}: \mu_{F}-\mu_{M}=0\\\\ H_{a}: \mu_{F}-\mu_{M}\neq 0$

The results of his tests are:

t-value = -1.05

p-value = 0.305

Degrees of freedom = df = 21

Based on this data we need to draw a conclusion about test. The significance level is not given, but the normally used levels of significance are 0.001, 0.005, 0.01 and 0.05

The rule of the thumb is:

If p-value is equal to or less than the significance level, then we reject the null hypothesis
If p-value is greater than the significance level, we fail to reject the null hypothesis.

No matter which significance level is used from the above mentioned significance levels, p-value will always be larger than it. Therefore, we fail to reject the null hypothesis.

Conclusion:

We do not have sufficient evidence to support the claim that the mean distance students traveled to school from their current residence was different for males and females.

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2 years ago

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1 year ago

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aleksandr82 [10.1K]

ANSWER

The number of children between the ages of 9 and 15 who visited the park is
$20$

EXPLANATION

The number of children between the ages of 9 and 15 who visited the park are those within the age group 9 to 12 and 12 to 15.

We can from the graph that, the height of the bar that corresponds to the age group 9 to 12

$= 14$
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$= 6$

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