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riadik2000 [5.3K]
3 years ago
8

WILL GIVE BRAINLIST AND 21 POINTS

Mathematics
2 answers:
sweet [91]3 years ago
8 0

Answer:

1) 4/(6+4+5) = 4/15

2) incomplete data

3) 16/(12+14+16+18) = 16/60 = 4/15

= 27%

4) (1+3)/10= 4/10 = 2/5

5) 12/30 = 0.4 = 40%

zvonat [6]3 years ago
8 0

Answer:

All of those answers are correct except number 2 that one is 0.3

Step-by-step explanation:

1.) 4/15

2.) 0.3

3.) 27%

4.) 2/5

5.) 40%

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Afina-wow [57]

Answer:

k = 11

Step-by-step explanation:

Given the points are collinear then the slopes between consecutive points are equal.

Using the slope formula

m = \frac{y_{2}-y_{1}  }{x_{2}-x_{1}  }

with (x₁, y₁ ) = (5, 1) and (x₂, y₂ ) = (1, - 1)

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6 0
3 years ago
Read 2 more answers
Please provide answer to 3-3 x 6 + 2 =
kicyunya [14]

Answer: 0

Step-by-step explanation:

3 - 3 is 0

6 + 2 is 8

0 x 8 = 0

5 0
3 years ago
Read 2 more answers
Which of the following is a geometric series? 40 + 50 + 60 + 70 40 + 42 + 44 + 46 40 + 80 + 40 + 120 40 + 20 + 10 + 5
Aloiza [94]

Answer:

40 + 20 + 10 + 5 is a geometric series

Step-by-step explanation:

* Lets revise the geometric series

- There is a constant ratio between each two consecutive numbers

- Ex:

# 5  ,  10  ,  20  ,  40  ,  80  ,  ………………………. (×2)

# 5000  ,  1000  ,  200  ,  40  ,  …………………………(÷5)

* General term (nth term) of a Geometric Series:

∵ U1 = a  ,  U2  = ar  ,  U3  = ar2  ,  U4 = ar3  ,  U5 = ar4

∴ Un = ar^n-1, where a is the first term , r is the constant ratio

  between each two consecutive terms , and n is the position of

  the term in the series

* Now lets check the answers to find the correct one

# 40 + 50 + 60 + 70

∵ 50/40 = 5/4

∵ 60/50 = 6/5

∵ 5/4 ≠ 6/5

- No common ratio between each two consecutive terms

∴ Not geometric series

# 40 + 42 + 44 + 46

∵ 42/40 = 21/20

∵ 44/42 = 22/21

∵ 21/20 ≠ 22/21

- No common ratio between each two consecutive terms

∴ Not geometric series

# 40 + 80 + 40 + 120

∵ 80/40 = 2

∵ 40/80 = 1/2

∵ 2 ≠ 1/2

- No common ratio between each two consecutive terms

∴ Not geometric series

# 40 + 20 + 10 + 5

∵ 20/40 = 1/2

∵ 10/20 = 1/2

∵ 5/10 = 1/2

- There is a common ratio between each two consecutive terms

∴ 40 + 20 + 10 + 5 is a geometric series

7 0
3 years ago
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