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il63 [147K]
3 years ago
9

Whats the answer 9(k + 2) = 99

Mathematics
2 answers:
Fofino [41]3 years ago
7 0

Answer:

10.8

Step-by-step explanation:

9k+2=99

-2     -2

9k=97

k=10.8

tester [92]3 years ago
7 0

Answer:

k = 9

Step-by-step explanation:

Use distributive rule

  9(k + 2) = 99

9*k + 9*2 = 99

   9k + 18  = 99           {Subtract 8 from both sides}

9k + 18 -18 = 99 - 18

            9k = 81              {Divide both sides by 9}

         9k/9= 81/9

k = 9

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5 9 17 11 8 11 16<br><br><br> How do you do standard deviations with these numbers
BlackZzzverrR [31]

Answer:

3.96

Step-by-step explanation:

Standard Deviation quantifies how diverse the values of your data set are and is useful in determining how your numbers are different from each other.

Step 1: Collect your data to form a data set from which you wish to calculate a standard deviation.

5 9 17 11 8 11 16

Step 2: Calculate the mean of the data set;

5 + 9 + 17 + 11 + 8 + 11 + 16 = 77

Mean = 77 / 7

Mean = 11

Step 3: Subtract the mean from your data set and square the differences, continue with each number on your data set;

5 - 11 = (-6)² = 36

9 - 11 = (-2)² = 4

17 - 11 = (6)² = 36

11 - 11 = (0)² = 0

8 - 11 = (-3)² = 9

11 - 11 = (0)² = 0

16 - 11 = (5)² = 25

Step 4: Find the mean of the differences;

36 + 4 + 36 + 0 + 9 + 0 + 25 = 110

Mean = 110 / 7 = 15.71

Step 5: Take the square root of the Mean above to find the standard deviation;

²√15.71 = 3.96

3 0
3 years ago
ryan pays $3.78 for a bag of 14 tangerines. find the unit price in dollars per tangerine. if necessary round your answer to the
sveta [45]

Answer: $3.70

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8 0
3 years ago
The profit when selling 'x' pairs of shoes is P(x)=-4x^2+32x-39. How many pairs of shoes should be sold in order to maximize the
Vitek1552 [10]

Answer: 4 pairs

Step-by-step explanation:

Given

Profit on selling 'x' pairs of shoes is P(x)=-4x^2+32x-39

Find the derivative of the function to find out the critical points

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Thus, for 4 pair of shoes profit is maximize.

5 0
3 years ago
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Basile [38]
What are you asking ???
Write it in an equation ???
d+65-45=Final Balance
D+20=Final Balance
Not sure if this is what you're looking for !


6 0
3 years ago
In a recent survey 55% of pet owners have more than one pet if there was 620 pet owners survey which proportion could be used to
Alika [10]

Answer:

341..

Step-by-step explanation:

i would personally say 341 because 620 multiplied by 55% or .55, as written on a calculator, would be 341.

5 0
3 years ago
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