9. The mean is defined as the

Mathematics

1 answer:

nevsk [136]3 years ago

8 0

Answer:

B. Average of the data set

Step-by-step explanation:

The mean is defined as the average of a data set and it's formula is

Mean = $\frac{sum of observations}{number of observations}$

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Several students and adult chaperones are going on a field trip to the theater. Each student ticket cost $2 and each adult ticke

stiks02 [169]

The answer to this question would be: A. the number of adults

In this question, there are 4 times as many students as adults going on the trip. If we put it into a function where s= student and a=adult, then we could get one equation:
1. s=4a

Each student ticket cost $2 and each adult ticket cost $4. The total cost of the trip is $144. We also can get one equation for this
2. 2s+ 4a= 144

If you put the first equation into the second, you will get:
2s+4a= 144
2(4a)+4a= 144

The function is already similar with 2(4x)+4x but it uses a instead of x. Then x = a = number of adult

6 0

2 years ago

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The low temperature last week in Iceland was-2.25. The low temperature this week was 1.25. What was the change in temperature fr

viktelen [127]

Answer:

The change in temperature from last week to this week=3.5

Step-by-step explanation:

To get the change in temperature from last week to this week, we need to take last week's temperature and subtract it from this week's temperature.

For example;

Change in temperature=This week's temperature-last week's temperature

where;