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3 years ago

The price of crude oil, per barrel, in the year 2006 was estimated at $66.02. There was a 9.5% increase in the year

Mathematics

1 answer:

vazorg [7]3 years ago

3 0

Answer:

D.) $100.36

Step-by-step explanation:

66.02/100 = 0.6602

0.6602 x 109.5 = 72.2919

72.2919/100 = 0.722919

0.722919 x 138.83 = 100.36

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An equation of a parabola with its vertex at (-3,2) and focus at (-3,-1) written in general equation form

german

<span> we have that
standard form of equation for parabola:
(x-h)^2=-4p(y-k)
(h,k) --------->being the (x,y) coordinates of the vertex.
Parabola opens downwards because focus is below vertex on the axis of symmetry.
For given problem:
</span><span>vertex: (-3,2)
axis of symmetry: x=-3
p=distance from vertex to focus on the axis of symmetry=2-(-1)=3
4p=12
Directrix: y=2+p=5
Equation:
(x+3)^2=-12(y-2)

the answer is </span>(x+3)^2=-12(y-2)

5 0

3 years ago

the inn has ten rooms. 1/2 of the rooms are reserved for friday. the rest are vacant. If 2 more rooms are reserved for friday, w

Ganezh [65]

7 total rooms will be occupied on Friday.

7 0

3 years ago

Read 2 more answers

Find YZ. please help!!!

Ad libitum [116K]

Your picture is a bit blurry. What is the equation on WX and on ZY?

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2 years ago

In Applied Life Data Analysis (Wiley, 1982), Wayne Nelson presents the breakdown time of an insulating fluid between electrodes

ale4655 [162]

Answer:

The sample mean is $\bar{x}=14.371$ min.

The sample standard deviation is $\sigma = 18.889$ min.

Step-by-step explanation:

We have the following data set:

$\begin{array}{cccccccc}0.15&0.82&0.81&1.44&2.70&3.28&4.00&4.70\\4.96&6.49&7.25&8.03&8.40&12.15&31.89&32.47\\33.79&36.80&72.92&&&&&\end{array}$

The mean of a data set is commonly known as the average. You find the mean by taking the sum of all the data values and dividing that sum by the total number of data values.

The formula for the mean of a sample is

$\bar{x} = \frac{{\sum}x}{n}$

where, $n$ is the number of values in the data set.

$\bar{x}=\frac{0.15+0.82+0.81+1.44+2.7+3.28+4+4.7+4.96+6.49+7.25+8.03+8.4+12.15+31.89+32.47+33.79+36.80+72.92}{19}\\\\\bar{x}=14.371$

The standard deviation measures how close the set of data is to the mean value of the data set. If data set have high standard deviation than the values are spread out very much. If data set have small standard deviation the data points are very close to the mean.

To find standard deviation we use the following formula

$\sigma = \sqrt{ \frac{ \sum{\left(x_i - \overline{x}\right)^2 }}{n-1} }$

The mean of a sample is $\bar{x}=14.371$ .

Create the below table.

Find the sum of numbers in the last column to get.

$\sum{\left(x_i - \overline{X}\right)^2} = 6422.0982$

$\sigma = \sqrt{ \frac{ \sum{\left(x_i - \overline{x}\right)^2 }}{n-1} } = \sqrt{ \frac{ 6422.0982 }{ 19 - 1} } \approx 18.889$

7 0

3 years ago

CAN SOMEONE HELP ME PLSSS

Dmitry_Shevchenko [17]

Answer:

210

Step-by-step explanation:

1.(Subtract both sides) we know that 14 - 14 = 0 But now you turn ZERO Into an X because anytime you subtract and get a ZERO IT WOULD BE X SO NOW YOU WILL TRY TO FIND/SOLVE X' I HOPE THIS HELPED/HELPS! (: I GOT 15 AS THE ANSWER BY SUBTRACTING 224-14 AND THEN I GOT 210 AND DIVIDED BY 14. BUT SINCE THERE IS NO X=15 ,It would be 210 because of subtraction.

5 0

3 years ago