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gizmo_the_mogwai [7]
2 years ago
14

Find a counter example. The product of any integer and 2 is greater than 2

Mathematics
1 answer:
alexira [117]2 years ago
8 0

Examples:

       3 x 2  =  6

       7 x 2  =  14

       Both are greater than  2 .


Counter examples:

        1 x 2  =     2

       -6 x 2  =  -12

        Not greater than  2 .    

         
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Find the selling price. Where necessary, round to the nearest cent. Regular price:$14.99. Percent of discount:15%
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Answer:

the price is approximately $12.75

Step-by-step explanation:

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3 years ago
Divide $150 into the ratio 2:5:3
pentagon [3]

Answer:

$30, $75, $45

Step-by-step explanation:

We can set up an equation, where x is an unknown value:

2x+5x+3x=150

10x = 150

x=15

Now that we know what x is, we can plug x in to solve for 2x, 5x, and 3x:

2x=2*15=30

5x=5*15=75

3x=3*15=45

Therefore, the answer is $30, $75, $45

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2 years ago
a discounted concert ticket costs $14.50 less than the original price p.You pay $53 for a discounted ticket.Write an equation th
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Answer:

$53.00 + $14.50

= 67.50

Make sure to leave a good review if it helped you

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7 0
3 years ago
A survey is to be conducted to determine the average driving in miles by Minnesota State University, Mankato students. The inves
Nadusha1986 [10]

Answer:

n=(\frac{1.75(8.2)}{1.5})^2 =91.52 \approx 92

So the answer for this case would be n=92 rounded up to the nearest integer

Step-by-step explanation:

Previous concepts

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".

\bar X represent the sample mean for the sample  

\mu population mean (variable of interest)

s represent the sample standard deviation

n represent the sample size  

Solution to the problem

The margin of error is given by this formula:

ME=z_{\alpha/2}\frac{\sigma}{\sqrt{n}}    (a)

And on this case we have that ME =1.5 and we are interested in order to find the value of n, if we solve n from equation (b) we got:

n=(\frac{z_{\alpha/2} \sigma}{ME})^2   (b)

The critical value for 92% of confidence interval now can be founded using the normal distribution. And in excel we can use this formla to find it:"=-NORM.INV(0.04;0;1)", and we got z_{\alpha/2}=1.75, replacing into formula (b) we got:

n=(\frac{1.75(8.2)}{1.5})^2 =91.52 \approx 92

So the answer for this case would be n=92 rounded up to the nearest integer

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3 years ago
What financial behaviors will typically lead to a low credit score? A Maxed out credit cards B Fully paid balances C On-time pay
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Only one answer really makes sense...and that is : maxed out credit cards
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