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Aleonysh [2.5K]
2 years ago
5

Find the mean median and mode (I NEED HELP ASAP)

Mathematics
2 answers:
Lina20 [59]2 years ago
8 0

Answer:

12) mode= no mode

     mean=62

     median=81

13) mode=74

mean=78

median =74

14) mode=80

mean=73

median=70

15)mode=70

mean=74

median=75

16)mode-no mode

mean=51

median=45

17)mode=86

mean=55

median=77

18)mode=no mode

mean=79

median=78

19)mode=70

mean=77

median=79

hope that helps :D

NeX [460]2 years ago
8 0

Answer:

12. The Mean is 81

13. Mean  is 74

14. Mean is 70

15. Mean is 75

16. Mean  is 42

17. Mean  is 77

18. Mean is 78

19. Mean is 79

Step-by-step explanation:

hope this helps

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Rewrite the system of linear equations as a matrix equation AX = B.
iren2701 [21]

Answer:

\left[\begin{array}{ccc}1&2&5\\1&1&1\\4&6&5\end{array}\right]*\left[\begin{array}{ccc}x1\\x2\\x3\end{array}\right]=\left[\begin{array}{ccc}5\\6\\7\end{array}\right]

Step-by-step explanation:

Let's find the answer.

Because we have 3 equations and 3 variables (x1, x2, x3) a 3x3 matrix (A) can be constructed by using their respectively coefficients.

Equations:

Eq. 1 : x1 + 2x2 + 5x3 = 5

Eq. 2 : x1 + x2 + x3 = 6

E1. 3 : 4x1 + 6x2 + 5x3 = 7

Coefficients for x1 ; x2 ; x3

From eq. 1 : 1 ; 2 ; 5

From eq. 2 : 1 ; 1 ; 1

From eq. 3 : 4 ; 6 ; 5

So matrix A is:

\left[\begin{array}{ccc}1&2&5\\1&1&1\\4&6&5\end{array}\right]

And the vector of vriables (X) is:

\left[\begin{array}{ccc}x1\\x2\\x3\end{array}\right]

Now we can find the resulting vector (B) using the 'resulting values' from each equation:

\left[\begin{array}{ccc}5\\6\\7\end{array}\right]

In conclusion, AX=B is:

\left[\begin{array}{ccc}1&2&5\\1&1&1\\4&6&5\end{array}\right]*\left[\begin{array}{ccc}x1\\x2\\x3\end{array}\right]=\left[\begin{array}{ccc}5\\6\\7\end{array}\right]

7 0
3 years ago
A bacteria culture contains 1500 bacteria initially and doubles every hour. (a) Find a function N that models the number of bact
Tpy6a [65]

Answer: a) N(t)=1500(2)^t

b) 25165824000

Step-by-step explanation:

The exponential equation for growth is given by :-

y= ab^t , where a= initial value , b =multiplicative growth factor and t = time.

Given : A bacteria culture contains 1500 bacteria initially and doubles every hour.

i.e. a = 1500 and b= 2

Then, the function N that models the number of bacteria after t hours will be :

N(t)=1500(2)^t

To find , the number of bacteria after 24 hours , we put t= 24 in above equation , we get

N(24)=1500(2)^{24}\\\\=1500(16777216)=25165824000

Hence, the number of bacteria after 24 hours is 25165824000.

7 0
3 years ago
HURRY PLZ!!!!!!BY 10:30
kotegsom [21]
Answer: C 20/51

Explanation:
1/51/20 = x/1
3 0
3 years ago
Ms. Morrison rolls a die what’s the p ( rolls an even number)
kenny6666 [7]

Answer:

P(\frac{1}{2})

Step-by-step explanation:

There are 6 sides on a die, with 3 even numbers

Create a fraction: \frac{favorable outcomes}{total possible outcomes}

The fraction would be \frac{3}{6}, simplified to \frac{1}{2}.

6 0
3 years ago
Hannah received $30 for her birthday and bought 3 shirts that were all the same price. If she had $9 left over, which equation s
sukhopar [10]
Equation:
9+3x=30

Answer:
9+3x=30

Subtract 9 from each side.
3x=21

divide by 3 on each side.
x=7

Each shirt cost $7.
3 0
2 years ago
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