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enyata [817]
4 years ago
10

Find the mean absolute deviation for the set s={85, 90, 68, 75, 79}

Mathematics
1 answer:
FromTheMoon [43]4 years ago
8 0

Answer: 6.48

Step-by-step explanation:

Mean is 79.4, population size is 5

MAD formular is addition of variance point /population size

n∑∣xi​−xˉ∣​

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What is 16 divided by X^2 equals 8 divided by X + 6?
zaharov [31]
Solve: \frac{16}{x^{2}} = \frac{8}{x + 6}

\frac{16}{x^{2}} = \frac{8}{x + 6}

\text{Cross multiply: } 16(x + 6) = 8x^{2}
\text{Simplify: } 2(x + 6) = x^{2}
\text{Expand: } 2x + 12 = x^{2}

\text{Solve for x: } x^{2} - 2x - 12 = 0

\text{Use the quadratic equation: } x = \frac{-b \pm \sqrt{b^{2} - 4ac}}{2a}
x = \frac{2 \pm \sqrt{4 + 48}}{2}
x = \frac{2 \pm \sqrt{52}}{2}
x = \frac{2 \pm \sqrt{13 \cdot 4}}{2}

x = \frac{2 \pm 2\sqrt{13}}{2}
\therefore x = 1 \pm \sqrt{13}
7 0
3 years ago
Eduardo has 24$ saved . if he saves 8$ each week how much money will he in 5 weeks .
lyudmila [28]

Answer:

is you are not adding in the 24 then 40 if you are adding in the 24 then 64

Step-by-step explanation:

8 0
3 years ago
I need answer asap please, This is due at the end of tommorow
kicyunya [14]

Answer:

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Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
if we observe a star over 6 months and obtain a parallax angle for the star how can we calculate the distance to the star
pashok25 [27]
Look at the graphic I posted.Then go to this link:

Source:
https://astronomy.stackexchange.com/questions/19322/stellar-parallax


4 0
3 years ago
If 5/9 of a tank can be filled in 2 minutes, how many minutes will it take to fill the whole tank ? A) 2.4 minutes B) 2.8 minute
Rina8888 [55]

Answer:

D.

Step-by-step explanation:

Set this up as a ratio with #parts of tank on top and #minutes on the bottom and then solve it as a proportion with x being the unknown number of minutes in the second ratio.

\frac{\frac{5}{9} }{2}=\frac{1}{x}

Notice the 1 in the numerator of the second ratio.  This is because a whole tank is represented by 9/9 which is the same thing as 1.

Cross multiply to solve for x:

\frac{5}{9}x=2(1)

To solve for x we will multiply both sides by 9/5:

(\frac{9}{5})(\frac{5}{9})x=2(\frac{9}{5})

9/5 and 5/9 cancel each other out when multiplied leaving simply "x" on the left.  And multiplying on the right:

x=\frac{18}{5}

which divides to 3.6 minutes

6 0
3 years ago
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