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Oliga [24]
3 years ago
9

How do I simplify this? -4k - 13 + 6k +23

Mathematics
1 answer:
Over [174]3 years ago
3 0

-4k + 6k -13 +23

2k +10

you can even write it like this:

2 ( k+ 5)

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3.(06.01)<br> What is the value of the expression 5^2 +2^2? (2 points)
stepladder [879]

Answer:

29

Step-by-step explanation:

5^2=25

2^2=4

25+4=29

3 0
3 years ago
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What is 4 60/72 as a decimal
Whitepunk [10]

Answer:

0.206897

Step-by-step explanation:

it is 0.206897 because you have take the whole make uneven fraction an add it to 60 in 60/72 to get 348 divided equals 0.206897

3 0
3 years ago
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What is the mean and mad of this data set?
larisa86 [58]

Answer:

The mean number of gerbils seen per day is 6.

The mean absolute deviation of the data is 2.29.

Step-by-step explanation:

The mean of a data set is the value that represents the entire data set. It is the average value.

The formula to compute the mean of a data set is:

\bar x=\frac{1}{n}\sum X

The mean absolute deviation (MAD) of a data set is the average distance amid each value and the mean. The MAD provides us with an idea about the deviation in the data set.

The formula to calculate the value of MAD is:

MAD=\frac{1}{n}\sum |x-\bar x|

The data set for the number of gerbils seen per day is:

S = {2, 3, 5, 7, 8, 8, 9}

Compute the mean of the data as follows:

\bar x=\frac{1}{n}\sum X

  =\frac{1}{7}\times [2+3+5+7+8+8+9]\\\\=\frac{1}{7}\times 42\\\\=6

The mean number of gerbils seen per day is 6.

Compute the mean absolute deviation of the data as follows:

MAD=\frac{1}{n}\sum |x-\bar x|

          =\frac{1}{7}\times [|2-6|+|3-6|+|5-6|+|7-6|+|8-6|+|8-6|+|9-6|]\\\\=\frac{1}{7}\times 16\\\\=2.2857\\\\\approx 2.29

Thus, the mean absolute deviation of the data is 2.29.

5 0
4 years ago
–9x + by = 1<br> 3х - 2y = 2
alexdok [17]

Answer:

1. -9x+by=1                    Answer : x=- 1/9 + by/9.

2. For 3x=2y=2, the answer is...

Exact form : x=29/3

Decimal for : x=9.666666666666666...

Mixed Number form : x=9 2/3

Step-by-step explanation:

1. Isolate the variable by dividing each side by factors that don't contain the variable.

2. Move all terms that do not contain x to the right side and then solve.

I hope this helps you out. If not, I am so sorry.

4 0
3 years ago
Dana surveyed students in her class. She found that 8 earned an A, 6 earned a B, 4 earned a C, and 2 earned a D on the last scie
lozanna [386]

Answer:

0.4 or 2/5

Step-by-step explanation:

Dana surveyed 20 students in total and out of those 20 only 8 got an A

so:

\frac{8}{20} now if you simplify it \frac{4}{10} and if you simplify it again:

\frac{2}{5} or 0.4 in decimal

7 0
3 years ago
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