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vampirchik [111]
4 years ago
7

Help me find the mean for this pls

Mathematics
1 answer:
slamgirl [31]4 years ago
8 0

Ok here there you go

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Determine if the sequence is geometric. If it is, find the common ratio.
Akimi4 [234]

Answer:

  1. -1/3
  2. not geometric
  3. -5
  4. 4

Step-by-step explanation:

You find the ratio of terms by dividing the second by the first. If the ratio is the same for all adjacent pairs of terms, it is a "common" ratio.

1) (2/3)/-2 = -1/3

  (-2/9)/(2/3) = -1/3

  (2/27)/(-2/9) = -1/3 . . . . . the common ratio is -1/3

___

2) 2/0 = undefined . . . . not a geometric sequence

___

3) -10/2 = -5

  50/-10 = -5

  -250/50 = -5 . . . . . the common ratio is -5

___

4) 4/1 = 4

  16/4 = 4

  64/16 = 4 . . . . . the common ratio is 4

8 0
3 years ago
In 1970 there were 160 African American women in elected public office in the United States. By 1993 the number had increased to
timama [110]

Answer:

Average rate of change for the number of African American women who held office at any given time between 1970 & 1993 is   94.43.

Step-by-step explanation:

Here, according to the question:

Number of African American women in elected public office in the United States in the year 1970 = 160

Number of African American women in elected public office in the United States in the year 1993 = 2332

Now, the change in the number of elected women between 1970 & 1993

= Women elected in the year 1993 - Women elected in the year 1970

=  2332 -  160  = 2,172

or, the change in the number of elected women candidates between 1970 & 1993 is 2,172

Now, the difference in the time period is 1993 - 1970 =  23 years

So, \textrm{The average rate of change}  = \frac{\textrm{Total change in the quantity}}{\textrm{Time Interval}} \\=\frac{2172}{23}  = 94.43

Hence, the average rate of change for the number of African American women who held office at any given time between 1970 & 1993 is 94.43.

6 0
4 years ago
Target due: Tomor
Olenka [21]
Cbxbxxxbzxxnznzxjjjjdjdjdjx
4 0
4 years ago
Show that the triangles are similar and write a similarity statement. Explain your reasoning.
Sav [38]

Answer:

the bases are parallel NP and QR

the have the same scale factor

5 0
3 years ago
PLEASE HELP mE: Expand the expression 0.9(7x - 1) + 9?
Alex_Xolod [135]

Answer:

6.3x+8.1 simplify

Step-by-step explanation:

8 0
3 years ago
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