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romanna [79]
2 years ago
7

At a convention there are 7 mathematics instructors, 5 computer science instructors, 3 history instructors, and 4 english instru

ctors. If an instructor is selected, find the probability of getting a computer science instructor or a mathematics instructor
Mathematics
1 answer:
kodGreya [7K]2 years ago
3 0

Answer:

12/19.

Step-by-step explanation:

There are 19 instructors altogether.

Probability (getting a computer science instructor) =  5/19.

Probability (getting a mathematics instructor) =  7/19.

As this  a 'compounded or'  probability  these values are added so the answer is 5/19 + 7/19

= 12/19.

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Alladin's Amusement Park has a popular roller coaster ride. There are 2 trains. Each train has 7 cars. Each car holds 16 people.
Nataly [62]

Answer:

224

Step-by-step explanation:

Number of trains in the roller coaster = 2

Number cars in each train = 7

Total number of cars = Number of trains \times Number of cars in each train = 7\times 2 = 14

Number of people in each car = 16

Total number of people in 14 cars = Number of people in one car \times Number of cars = 16 \times 14 = 224

i.e.

Total number of people in the roller coaster in one run = 224

Number of runs made by each train in one hour = 10

Therefore, Total number of people that can ride the roller coaster in one hour can be found by multiplying the number of runs with total number of people in the roller coaster in one run.

224 \times 10 = <em>2240</em>

4 0
2 years ago
Which of the following is the reciprocal of 5 3/7 <br><br> 38/7<br> 7/38<br> 22/3<br> 3/22
elixir [45]
The answer is 7/38.
6 0
3 years ago
Read 2 more answers
X=7w^+4w-6 and y=w^-11w+13
aleksandr82 [10.1K]
Although the terms might seem intimidating, this is a simple substitution problem.

X + Y = _______
Substitute the values of X and Y in terms of w
(7w^2 + 4w - 6) + (w^2 - 11w + 13) = ______
Now all you need to do is combine like terms (terms that have the same variables raised to the same power)
8w^2 - 7w + 7

Final Answer: 8w^2 - 7w + 7
3 0
3 years ago
Select all the reasons why random samples are preferred over other sampling methods. A random sample is likely to give you a sam
Shalnov [3]

Answer:

The following statement below are reasons why random sampling are preferred over other sampling:

O.  A random sample is a fair way to select a sample because each member of the population has an equal chance of being selected.

O.  A random sample is always the easiest way to select a sample from a population.

O.  A random sample is likely to give you a sample that is representative of the population.

Step-by-step explanation:

5 0
2 years ago
Which equation shows y=34x−52 in standard form?
rewona [7]

Answer:

4x−3y=−10

Step-by-step explanation:

6 0
2 years ago
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