The third one
U solve from left to right and when two negatives are next to each other it turns to a plus.
Answer:
The relative frequency is found by dividing the class frequencies by the total number of observations
Step-by-step explanation:
Relative frequency measures how often a value appears relative to the sum of the total values.
An example of how relative frequency is calculated
Here are the scores and frequency of students in a maths test
Scores (classes) Frequency Relative frequency
0 - 20 10 10 / 50 = 0.2
21 - 40 15 15 / 50 = 0.3
41 - 60 10 10 / 50 = 0.2
61 - 80 5 5 / 50 = 0.1
81 - 100 <u> 10</u> 10 / 50 = <u>0.2</u>
50 1
From the above example, it can be seen that :
- two or more classes can have the same relative frequency
- The relative frequency is found by dividing the class frequencies by the total number of observations.
- The sum of the relative frequencies must be equal to one
- The sum of the frequencies and not the relative frequencies is equal to the number of observations.
To write .0487 as a percent, you have to remember that 1 equal's100% and what you need to do is.. multiply the number by 100 and add the symbol % .
.0487 * 100 = 4.87%
Answer:
See explanation
Step-by-step explanation:
Let x be the number of hours per week Nando is brisk walking and y be the number of hours per week Nando is biking at a moderate pace.
For the first month, he needs to exercise at most five hours per week, then
Brisk walking burns about 350 calories per hour, then it burns 350x calories per x hours.
Biking at a moderate pace burns about 700 calories per hour, then it burns 700y calories per y hours.
Nando must burn at least 2,000 calories per week, so
You get the system of two inequalities:
The attached graph shows the solution set to this system of inequalities. In this diagram, red region represents the solution set to the first inequality, blue region represents the solution set to the second inequality and their intersection is the solution set to the system of two inequalities.
- 7 1/5 < - 2.3 < 0 < π < 23/7 is ascending order of these numbers.
What do descending order and ascending order mean?
- Climbing down the stairs of numbers starting with their highest value is another way to think of descending.
- The slide is descended while moving down it.
- Ascending order, in which the numbers are organized from lower value to higher value, is the reverse of falling order.
The values are 0 , -2.3 , π , 23/7 , -71/5
first simplify all the values 0 , - 2.3 , 3.14 , 3.28 , -7.2
now arrange all value in Ascending order
- 7.2 < -2.3 < 0 < 3.14 < 3.28
- 7 1/5 < - 2.3 < 0 < π < 23/7
Learn more about Ascending order
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