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Alik [6]
3 years ago
14

Give an example from everyday life of an angle that measures 90 degrees

Mathematics
2 answers:
trasher [3.6K]3 years ago
6 0
In the room where you're sitting right now, the angle on the floor
where the bottoms of two walls come together is 90 degrees.
NikAS [45]3 years ago
3 0
An example from everyday like of an angle that measures 90 degrees is an computer, or a tv
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In a survey of 1046 adults conducted by Bradley Corporation, subjects were asked how often they wash their hands when using a pu
prohojiy [21]

Answer:

Sample = 1046

Population = All adults.

Step-by-step explanation:

In Statistics, a sample can be defined as a set of items, objects or individuals collected, selected or drawn from a population. Thus, a sample is a subset of a population. In this scenario, the sample is 1046.

On the other hand, population can be defined as the total number of individuals in a survey. Thus, all the adults are a population.

8 0
3 years ago
Based on FAA estimates the average age of the fleets of the 10 largest U.S. commercial passenger carriers is 13.4 years with a s
Aliun [14]

Answer : 0.0129

Step-by-step explanation:

Given : Based on FAA estimates the average age of the fleets of the 10 largest U.S. commercial passenger carriers is \mu=13.4 years and standard deviation is \sigma=1.7 years.

Sample size : n=40

Let X be the random variable that represents the age of fleets.

We assume that the ages of the fleets of the 10 largest U.S. commercial passenger carriers are normally distributed.

For z-score,

z=\dfrac{x-\mu}{\dfrac{\sigma}{\sqrt{n}}}

For x=14

z=\dfrac{14-13.4}{\dfrac{1.7}{\sqrt{40}}}\approx2.23

By using the standard normal distribution table , the probability that the average age of these 40 airplanes is at least 14 years old will be :-

P(x\geq 14)=P(z\geq2.23)\\\\=1-P(z

Hence, the required probability = 0.0129

6 0
3 years ago
Which point is not on the graph of the equation y = x2 + 3x - 5. A.(2,5)
wel

Answer:C

Step-by-step explanation:

7 0
3 years ago
3.
Afina-wow [57]

Answer:

pls write full question question is incorrect

5 0
2 years ago
Adison earned $25 mowing her neighbors lawn. Then she loaned her friend $18 and got $50 from her grandmother. She now has $86. H
Marat540 [252]
29 dollars because 25-18+50=57 and 86-57=29
4 0
3 years ago
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