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Vladimir [108]
3 years ago
13

3 is less than the sum of a number s and 4

Mathematics
1 answer:
monitta3 years ago
7 0
3 is less than the sum of any positive number added with 4
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The Cooking Club made some pies to sell
Sergio [31]

Answer:

36

Step-by-step explanation:

divide the 72 pieces by 2, you already know that 6 + 6 is 12, and 30 +30 is 60, so add 60 and 12 and you get 72

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Anyone know how to do this? 15 points.
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It's angles 9 and 10.

Supplementary angles are two angles that add up to 180°.

So, supplementary angles both "stick" off of a straight line. (Because a straight line is 180°).

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Answer:

Square Prism

Step-by-step explanation:

Hope This Helps;)

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The Weschler Intelligence Scale for Children (WISC) is an intelligence test designed for children between the ages of 6 and 16.
Ostrovityanka [42]

Answer:

a) \bar X = 121.4

b) SE = \frac{\sigma}{\sqrt{n}}= \frac{15}{\sqrt{40}}=2.372

c) 121.4-1.64\frac{15}{\sqrt{40}}=117.51    

121.4+1.64\frac{15}{\sqrt{40}}=125.29  

Step-by-step explanation:

Data given: 126,111,141,96,123,115,116,113,127,114,122,116,104,126,126,132,139,111,143,121,119,107,154,125,120,135,142,132,94,103,143,115,132,107,118,105,101,135,94,153

Part a

For this case we can calculate the sample mean with the following formula:

\bar X = \frac{\sum_{i=1}^n X_i}{n}

And after replace we got:

\bar X = 121.4

Part b

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".  

For this case we assume that the population deviation is \sigma=15, we can calculate the standard error with this formula:

SE = \frac{\sigma}{\sqrt{n}}= \frac{15}{\sqrt{40}}=2.372

Part c

The confidence interval for the mean is given by the following formula:  

\bar X \pm z_{\alpha/2}\frac{\sigma}{\sqrt{n}}   (1)  

Since the Confidence is 0.90 or 90%, the value of \alpha=0.1 and \alpha/2 =0.05, and we can use excel, a calculator or a tabel to find the critical value. The excel command would be: "=-NORM.INV(0.05,0,1)".And we see that z_{\alpha/2}=1.64

Now we have everything in order to replace into formula (1):

121.4-1.64\frac{15}{\sqrt{40}}=117.51    

121.4+1.64\frac{15}{\sqrt{40}}=125.29  

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Which model represents a fraction greater than Three-fifths?
Kay [80]

Answer:

8/10 goes down to 4/5 but the greater fraction is 3/5

Step-by-step explanation:

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