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Helga [31]
3 years ago
11

How many centimeters are equivalent to 2.5 meters?

Mathematics
2 answers:
Marina86 [1]3 years ago
6 0
In cm 2.5 meters are 250 cm

reason 2.5*100=250
Lesechka [4]3 years ago
5 0

Answer:

250 centimeters

Step-by-step explanation:

............

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Consider the expressions 3x(x − 2) + 2 and 2x2 + 3x − 18.
Rzqust [24]

Answer:

See answer below

Step-by-step explanation:

For the first expression

3 x (x - 2) + 2 = 3 x^2 - 6 x + 2

evaluated at x= 4 we get: 26

and for x = 5 we get 47.

For the second expression

2 x^2 + 3 x - 18

we get the exact same values when doing the evaluation at these two points.

Based on those results, one may think the expressions may be equivalent, but they are not equivalent. Because at any other x-value, their results are different. See for example that for x = 0 the first one gives "2" while the second one gives -18.

4 0
2 years ago
A university administrator was interested in determining if there was a difference in the distance students travel to get from c
eduard

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.

7 0
3 years ago
PLZ HELP ME WITH THIS ONE ALSO :)
Norma-Jean [14]

Answer:

9 \times  \sqrt{3 }

Step-by-step explanation:

x =  \cos(30)  \times 18 \\ x = 9 \sqrt{3}

5 0
3 years ago
6(z+9) I need help figuring this out
NNADVOKAT [17]
The answer should be 6z + 54 but I’m not completely positive.
8 0
2 years ago
At the beginning of a trip, the tank of Diana’s car was filled with gasoline to half of its capacity. During the trip, Diana use
Levart [38]

Answer:

what is half of 30 percent?

Step-by-step explanation:

and that  might  give you the half of 30 percent and all you will have to do is figure out how 30 percent is all toghter and then add the anthor numbers and also but lastly  put in on a experession in simplifed form.

5 0
2 years ago
Read 2 more answers
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