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Stells [14]
2 years ago
13

Give the value of x . A. 60 degrees B. 180 degrees C. 120 degrees D. 45 degrees

Mathematics
1 answer:
Harrizon [31]2 years ago
5 0

Answer:

x=120°

Step-by-step explanation:

sum of all angles in a triangle is equal to 180

let the unknown angle be

\alpha

60 + 60 +  \alpha  = 180 \\  \alpha  = 180 - 60 - 60 \\  \alpha  = 60 \\

\alpha  + x = 180 \\ x = 180 -  \alpha  \\ x = 180 - 60 \\ x = 120

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360 is the answer
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3 years ago
You are the operations manager for an airline and you are considering a higher fare level for passengers in aisle seats. How man
Shtirlitz [24]

Answer:

A)n= 703.96

B)n= 602.308

Step by step Explanation:

Given that you want to be 99% confident that the sample percentage is within 3.1 percentage points of the true population percentage.

Then z/2 = 1.645

And M = 3.1% = 0.031

A)Nothing is known therefore,

p = q = 0.50

E=0.031

For 90% confidence, z = 1.645

n = (zα/₂)²(p)(1-p)/M²

n= 1.645²× 0.5 × 0.5/0.031²

n= 703.96

Therefore, 703.96randomly selected air passengers must be​ surveyed to be 99%

B)we know that recent surveys surgest that about 38% of all air passengers prefer an aisle seat, thus p = 35% = 0.35

n = (zα/₂)²(p)(1-p)/M²

n= (1.645²× 0.31 × 0.69)/0.031²

n= 602.308

Hence, 602.308 randomly selected air passengers must be​ surveyed to be 90% confident that the sample percentage is within 3.1 percentage points of the true population percentage.

6 0
3 years ago
5 x 7 + 14 x / 7 - 35
fiasKO [112]

Answer:

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7 0
2 years ago
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Your firm employs 40 people of which 10% are part-time workers. How many full time employees do you have?
steposvetlana [31]
If 10% are part-time workers, then 90% are full time

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8 0
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Step-by-step explanation:

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