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Ivan
2 years ago
9

Help i have 3 minutes

Mathematics
1 answer:
Zepler [3.9K]2 years ago
5 0

Answer: [2 green dot], [4 red dots]

Step-by-step explanation:

Pattern for red is 4 red dots, 3 red dots, 4 red dots, 3 red dots...

Pattern for green dots is 16, 11, 7, 4, 2, 0, -1... <em>The pattern here is, starting at 16, subtract 5, then subtract 4, then subtract 3, then subtract 2...</em>

16 - 5 = 11

11 - 4 = 7

7 - 3 = 4

4 - 2 = 2

2 - 2 = 0

0 - 1 = -1

Hope this helps!

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If a=mg-kv2/m,find,correct to the nearest whole number the value of v when a=2.8,m=12,g=9.8 and k=8/3
Cerrena [4.2K]

Answer:

v = 23

Step-by-step explanation:

Formatting the question gives;

a = mg - kv² / m

Make v subject of the formula as follows;

(i) Multiply both sides by m

ma = m²g - kv²

(ii) Collect like terms

kv² = m²g - ma

(iii) Divide through by k

v² = (m²g - ma) / k

(iv) Take the square root of both sides

v = √ [(m²g - ma) / k]            --------------(ii)

From the question:

a = 2.8

m = 12

g = 9.8

k = 8/3

Substitute these values into equation (i) as follows;

v = √ [(12²(9.8) - 12(2.8)) / (8/3)]

v = √ [(1411.2 - 33.6) / (8/3)]

v = √ [1377.6 / (8/3)]

v = √ [1377.6 x (3/8)]

v = √ [1377.6 x 3 / 8)]

v = √ [516.6]

v = 22.73

v = 23 [to the nearest whole number]

Therefore v = 23 to the nearest whole number    

3 0
3 years ago
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tangare [24]

Answer:

2.7

Step-by-step explanation:

322/7=46

46*125=2.71739

round off

2.7

4 0
3 years ago
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Step-by-step explanation:

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3 years ago
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