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3 years ago

PLEASE HELP ME!!!!! what is the perimeter and area of this figure?

Mathematics

1 answer:

Pavel [41]3 years ago

4 0

Answer:

The perimeter is 99

Step-by-step explanation:

you do 11x9=99

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If f(x) = 3x + 10x and g(x) = 4x - 2, find (f - g)(x).

Anika [276]

Answer:

$(f-g)(x)=9x+2$

Step-by-step explanation:

The function $(f-g)(x)$ means subtract the expression of g function from the expression of f function.

So we have: (3x+10x) - (4x - 2) = (13x) - (4x -2) = 13x -4x +2 = 9x+2

Hence $(f-g)(x)=9x+2$

3 0

3 years ago

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ACCORDING TO THE FEBRUARY 2008 FEDERAL trade commission reports on consumer fraud and identity theft, Alaska had 321 complaints

balu736 [363]

Answer: (0.205905, 0.242095)

Step-by-step explanation:

We know that the confidence interval for population proportion is given by :-

$\hat{p}\pm z^*\sqrt{\dfrac{\hat{p}(1-\hat{p})}{n}}$

, where $\hat{p}$ = sample proportion

n= sample size

Let p be the proportion of complaints of identity theft .

As per given , we have

n= 1432

$\hat{p}=\dfrac{321}{1432}\approx0.224$

By standard normal table , z* = 1.645 for 90% confidence level.

Now , 90% confidence interval for p will be :

$0.224\pm (1.645)\sqrt{\dfrac{0.224(1-0.224)}{1432}}\\\\=0.224\pm (1.645)(0.011)\\\\=0.224\pm 0.018095\\\\=(0.224-0.018095,\ 0.224+0.018095)\\\\=(0.205905,\ 0.242095)$

Hence, required confidence interval = (0.205905, 0.242095)

4 0

3 years ago

coldgirl [10]

Step-by-step explanation:

$\sin(x) = \frac{7}{15} \\ x = { \sin}^{ - 1} ( \frac{7}{15} ) \\ x = 27.8 \degree$

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3 years ago

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What is the standard deviation of this data set ?Reporting 2 more decimal places than the original data. 69.2,85.2,85.2,73.8,57.

galben [10]

Answer:6.986

Step-by-step explanation:

To find the standard deviation of a set of data I find it easiest to make a chart. First you must find the mean of your data. In this case it is 476.85. Then you must subtract the mean from each data point, and square each number. Now you take your new set of data that has been squared and find the mean of these numbers. This is 48.8006. Lastly, take the square root of this number. In this case your standard deviation is 6.986.

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2 years ago

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Simplify this expression 1/3(21m 27) a. 7m 27 b. 7m 9 c. 63m 9 d. 7m 81

Natasha_Volkova [10]

1/3(21m + 27) = 7m + 9

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4 years ago