3 years ago

9 and 10 pls help :)

Mathematics

1 answer:

tatuchka [14]3 years ago

5 0

Answer:

Question 9

Option A

Question 10

Option A

<h2>Please mark as brainliest for further answers :)</h2>

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Answer:

a) $s= 9.74$

D. 9.74

b) $Median= 74$

B. 74

Step-by-step explanation:

Part a

We have the following dataset given:

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We can begin calculating the sample mean with the following formula:

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

And replacing we got:

$\bar X = 75.04$

Now we can calculate the sample deviation with the following formula:

$s =\sqrt{\frac{\sum_{i=1}^n (X_i-\bar X)^2}{n-1}}$

And after replace we got:

$s= 9.74$

Part b

For this case we need to sort the value on increasing way:

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And the median would be the value in the position 13 and we got:

$Median= 74$

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Answer:

Step-by-step explanation:

9/12=12/x

x=16

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A large research hospital is considering a new computer-based training course for lab safety. The total cost of the hospital's c

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Evaluate −8 + 10 × 4 ÷ (−2)

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Answer:

-28

Step-by-step explanation:

well first u gotta use order of operations. So first u would do

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next u would hafta do 40 / -2 which = -20

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Answer:

$5x+8=23$

Step-by-step explanation:

we have

$5x-8=7$

Adds 16 both sides

$5x-8+16=7+16$

$5x+8=23$

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