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Vitek1552 [10]
4 years ago
5

Write a two column proof

Mathematics
1 answer:
dangina [55]4 years ago
6 0

Answer:?

Step-by-step explanation:?

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The average lateness for one of the top airline companies is 10 minutes. The variance of the lateness measure is calculated as 9
Soloha48 [4]

Answer:

The z score for the airplane arriving 13 minutes after arrival time is 0.33

Step-by-step explanation:

Using normal distribution,

The average lateness for one of the top airline companies is 10 minutes. So our mean, u = 10

The variance, s of the lateness measure is calculated as 9.

x =13 which stands for arrival time.

Using normal distribution,

z = (x - u)/s

z = (13 - 10)/9 = 3/9 = 0.33

The z score for the airplane arriving 13 minutes after arrival time is 0.33. The probability value of the z score can be found by looking at the Normal distribution table

6 0
3 years ago
Please help meh look at the photo I gave you.
Zanzabum

Answer:

B

Step-by-step explanation:

1 game costs 14 dollars.

2 \cdot 14=28

2 games would cost 28 dollars.

4 \cdot 14=56

4 games would cost 56 dollars.

7 \cdot 14=98

7 games would cost 98 dollars.

6 0
3 years ago
Read 2 more answers
Solve this equation pls and explain how do you factor the x
Oliga [24]

Answer:

x = - 7, x = 0

Step-by-step explanation:

Given

x² + 7x = 0 ← factor out x from each term on the left side

x(x + 7) = 0

Equate each factor to zero and solve for x

x = 0

x + 7 = 0 ⇒ x = - 7

5 0
4 years ago
Read 2 more answers
In a class in which the final course grade depends entirely on the average of four equally weighted 100-point tests, Harold has
qaws [65]

Answer:

Between 19 and 55, inclusive

Step-by-step explanation:

70 < Average < 79 (inclusive)

4×70 < sum < 4×79 (inclusive)

280 < sum < 316

280 < 92 + 84 + 85 + X < 316

280 < 261 + X < 316

19 < x < 55

Fourth score can be between 19 and 55, inclusive

5 0
3 years ago
WILL GIVE BRAINLIST!!! The circumference of a circle is 62.8 and the diameter of the circle is 20. Which best represents the val
dimulka [17.4K]

Answer:

62.8/20

Step-by-step explanation:

6 0
3 years ago
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