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3 years ago

A restaurant offers 5 appetizers and 7 main courses. How many ways can a person order a two-course meal?

2 answers:

8 0

This is a "counting principle" problem.
The way to find the answer is you just multiply
# of appetizers * # of main courses
5 * 7 = 35
There are 35 different combinations.

amid [387]3 years ago

4 0

They can order a 2 course meal 35 different ways

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A cinema has three screens last Saturday there were 500 visitors 40% went to screen 1 ,25% went to screen 2 the rest went to scr

ratelena [41]

Answer:

200 visitors went to screen 1.

125 visitors went to screen 2.

175 visitors went to screen 3.

Step-by-step explanation:

We will find number of visitors who went to screen 1 by finding 40% of 500 as we are told that 40% of 500 visitors went to screen 1.

$500*\frac{40}{100} =5*40=200$

Therefore, 200 visitors went to screen 1.

Now we will find number of visitors who went to screen 2. We are told that 25% of 500 visitors went to screen 2.

$500*\frac{25}{100} =5*25=125$

Therefore, 125 visitors went to screen 2.

Now we will find the number of visitors who went to screen 3 by subtracting combined number of visitors who went to screen 1 and screen 2 from total number of visitors.

$500-(200+125)$

$500-325=175$

Therefore, 175 visitors went to screen 3.

7 0

3 years ago

Resuelve las siguientes ecuaciones

N76 [4]

Answer:

Step-by-step explanation:

3 0

3 years ago

Suppose that replacement times for washing machines are normally distributed with a mean of 9.3 years and a standard deviation o

Harlamova29_29 [7]

Answer:

The probability is 0.0643

Step-by-step explanation:

* Lets revise some definition to solve the problem

- The standard deviation of the distribution of sample means is called σM

- σM = σ/√n , where σ is the standard deviation and n is the sample size

- z-score = (M - μ)/σM, where M is the mean of the sample , μ is the mean

of the population

* Lets solve the problem

- The mean of the washing machine is 9.3 years

∴ μ = 9.3

- The standard deviation is 1.1 years

∴ σ = 1.1

- There are 70 washing machines randomly selected

∴ n = 70

- The mean replacement time less than 9.1 years

∴ M = 9.1

- Lets calculate z-score

∵ σM = σ/√n

∴ σM = 1.1/√70 = 0.1315

∵ z-score = (M - μ)/σM

∴ z-score = (9.1 - 9.3)/0.1315 = - 1.5209

- Use the normal distribution table of z to find P(z < -1.5209)

∴ P(z < -1.5209) = 0.06426

∵ P(M < 9.1) = P(z < -1.5209)

∴ P(M < 9.1) = 0.0643

* The probability is 0.0643

5 0

3 years ago

The ratio of male students to female students in a class is 5:4. If the number of male students in the class is

beks73 [17]

Answer:

The answer is 20

Step-by-step explanation:

In ratio what you do one side you do on the other side 5:4=25:20

5×5=25

4×5=20

6 0

3 years ago

The quotient of a number and five increased by four is sixteen answer

Anastasy [175]

The problem would be written out like this: n/5 + 4 = 16. We would have to subtract 4 from both sides to get n/5 = 12. Then, we multiply both sides by 5 and after that step, you get 60. n = 60.

3 0

3 years ago

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A restaurant offers 5 appetizers and 7 main courses. How many ways can a person order a​ two-course meal?

A restaurant offers 5 appetizers and 7 main courses. How many ways can a person order a two-course meal?