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Damm [24]
3 years ago
9

-4(2k – 1) +9k - 15 simplify expression​

Mathematics
2 answers:
Aneli [31]3 years ago
7 0

Answer:

k - 11

Step-by-step explanation:

Firstly, we have to distribute: -8k + 4 + 9k - 15

Collect like terms: 1k - 11 OR k - 11

pentagon [3]3 years ago
6 0
Step one - multiply the expression within brackets:
-8k + 4 + 9k - 15

Step 2 - reduce k’s and numbers:
k - 11

That’s it! :)
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steposvetlana [31]

The answer to your question is 225

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3 years ago
C)PLEASE MAN PEOPLE ARE USING ME FOR POINTS
UNO [17]

The measures of spread include the range, quartiles and the interquartile range, variance and standard deviation. Let's consider each one by one.

<u>Interquartile Range: </u>

Given the Data -> First Quartile = 2, Third Quartile = 5

Interquartile Range = 5 - 2 = 3

<u>Range:</u> 8 - 1 = 7

<u>Variance: </u>

We start by determining the mean,

\:1+\:2+\:3+\:3+\:3+\:5+\:8 / 7 = 3.57

n = number of numbers in the set

Solving for the sum of squares is a long process, so I will skip over that portion and go right into solving for the variance.

\sum _{i=1}^n\frac{\left(x_i-\bar{x}\right)^2}{n-1},\\\\=> SS/n - 1\\\\=> 31.714/7 - 1\\=> 5.28571

5.3

<u>Standard Deviation</u>

We take the square root of the variance,

\sqrt{5.28571} = 2.29906

2.3

If you are not familiar with variance and standard deviation, just leave it.

3 0
3 years ago
Read 2 more answers
PLSSSS HELP 20 POINTS ! Match each exponential inequality to its percent rate of change.
const2013 [10]

5(0.85)t < 1.5  is  15% decay

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7 0
3 years ago
Read 2 more answers
Let f(x) = 12 over the quantity of 4 x + 2 . Find f(−1). (1 point) a −6b −2c 2d 6
antoniya [11.8K]

Answer:

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Step-by-step explanation:

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     = 12 / -2

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5 0
4 years ago
On the same day at school, 1/6 of the students were wearing skirts and 5/8 of the students were wearing pants. The rest of the s
anastassius [24]
What you do is you find the common denominator between the two fractions given.  the easiest is to just multiply them 

6*8=48

and then multiply each numerator by the number it's denominator is multiplied by

1*8=8  and 5*6=30

and now you have your new fractions, add them together

8/48+30/48=38/48

this leaves 10/48 as the people who were wearing shorts,  just simplify this and it's done

10/2    =5/24
48/2
4 0
3 years ago
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