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Komok [63]
2 years ago
12

If cose =-2/3 -, which of the following are possible for the same value of e?

Mathematics
1 answer:
Lubov Fominskaja [6]2 years ago
3 0

Answer:

B?

Step-by-step explanation:

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Dividing a Fraction into Equal Groups
Sergeu [11.5K]

Answer:

Each hiker carried the backpack for 1/5 of the total trail distance

Step-by-step explanation:

Three members of a teen hiking group hiked 3/5  of the entire Appalachian trail, each teen carried the backpack the same distance

=>  each teen carried the backpack for = (1/3) (3/5)  of total Distance = 1/5  

3 0
2 years ago
8. You recorded the time in seconds it took for 8 participants to solve a puzzle. The times were: 15.2, 18.8, 19.3, 19.7, 20.2,
kirill115 [55]

Answer:

Xbar = 20.813

Median = 19.95

5 - number summary :

Minimum = 15.2

Q1 = 19.05; Q2 = 19.95 ; Q3 = 21.95 ; maximum = 29.4

Standard deviation, s = 4.068

Step-by-step explanation:

Given the data:

X : 15.2, 18.8, 19.3, 19.7, 20.2, 21.8, 22.1, 29.4

Ordered data:

15.2, 18.8, 19.3, 19.7, 20.2, 21.8, 22.1, 29.4

The mean (xbar) :

Xbar = Σx / n ; n = sample size = 8

Xbar = 166.8 / 8 = 20.8125

Xbar = 20.813

The median :

1/2 *(n+1)th term

1/2(9) = 4.5

(4 + 5)th term / 2

(19.7 + 20.2) / 2 = 19.95

The five number summary :

Minimum = 15.2

Lower quartile (Q1) = 1/4(9) = 2.25 ; (2nd + 3rd) term / 2

(18.8 + 19.3) / 2 = 19.05

Median (Q2) = 19.95

Upper quartile (Q3) :

3/4(9) = 6.75 = (6th + 7th) / 2

(21.8 + 22.1) / 2 = 21.95

Maximum = 29.4

The standard deviation, s = sqrt[(x - xbar)²/ (n-1)]

Using calculator ;

s = 4.068

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2 years ago
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1,2,3,3,4,5,6,8,8,9,9,10

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This set has three modes.

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