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amm1812
4 years ago
6

how much longer is a 1-inch button than a 3/8-inch button?how much longer is a 1-inch button then a 3/8

Mathematics
2 answers:
irakobra [83]4 years ago
6 0
I believe the answer is 5/8

8/8 - 3/8 = 5/8
Anvisha [2.4K]4 years ago
6 0
Subtract the difference between 1 inch and 3/8 inch

= 1 - 3/8
the whole one can also be written as 8/8

= 8/8 - 3/8

= 5/8 inch


ANSWER: It is 5/8 inches longer

Hope this helps! :)
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What is −15÷3/5? −25 −9 −19 −125
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A high-tech company wants to estimate the mean number of years of college education its employees have completed. A sample of 15
valentinak56 [21]

Answer:

4 - 2.14 \frac{0.7}{\sqrt{15}}=3.61

4 + 2.14 \frac{0.7}{\sqrt{15}}=4.39

The 95% confidence interval is given by (3.61;4.39)

Step-by-step explanation:

Notation and definitions

n=15 represent the sample size

\bar X=4 represent the sample mean  

s=0.7 represent the sample standard deviation

m represent the margin of error

A confidence interval is "a range of values that’s likely to include a population value with a certain degree of confidence. It is often expressed a % whereby a population means lies between an upper and lower interval".  

The margin of error is the range of values below and above the sample statistic in a confidence interval.  

Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".  

Calculate the critical value tc

In order to find the critical value is important to mention that we don't know about the population standard deviation, so on this case we need to use the t distribution. Since our interval is at 95% of confidence, our significance level would be given by \alpha=1-0.95=0.05 and \alpha/2 =0.025. The degrees of freedom are given by:  

df=n-1=15-1=14  

We can find the critical values in excel using the following formulas:  

"=T.INV(0.025,14)" for t_{\alpha/2}=-2.14  

"=T.INV(1-0.025,14)" for t_{1-\alpha/2}=2.14  

The critical value tc=\pm 2.14

Calculate the margin of error (m)

The margin of error for the sample mean is given by this formula:

m=t_c \frac{s}{\sqrt{n}}

m=2.14 \frac{0.7}{\sqrt{15}}=0.387

Calculate the confidence interval  

The interval for the mean is given by this formula:

\bar X \pm t_{c} \frac{s}{\sqrt{n}}

And calculating the limits we got:

4 - 2.14 \frac{0.7}{\sqrt{15}}=3.61

4 + 2.14 \frac{0.7}{\sqrt{15}}=4.39

The 95% confidence interval is given by (3.61;4.39)

4 0
3 years ago
Congratulations I was forced to do this so I could see the question.?
disa [49]
Nobody can provide an answer to you if you do not ask a question that has a viable answer?
4 0
2 years ago
A quadrilateral has one pair of parallel sides with lengths 1 3/4 inches and 1 1/4 inches, and two angles that measure 36 degree
DIA [1.3K]

Answer:

  • <u><em>The name of the quadrilateral is</em></u><u> isosceles trapezoid.</u>

Explanation:

1) The two parallel sides of different legths 1\frac{3}{4} and 1\frac{1}{4} constitute the bases of a trapezoid.

2) The two equal anglesare the base angles of the trapezoid, and mean that it is an isosceles trapezoid.

An isosceles trapezoid is truncated isosceles triangle.

The definition of trapezoid is a quadrilateral with at least two parallel sides.

The drawing is attached: only the green lines represent the figure, the dotted lines just show how this is derived from an isosceles triangle.

5 0
3 years ago
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