Answer:
Step-by-step explanation: Let w = the width of the given rectangle. Let l = the length of the given rectangle. Since the length l is 3 times the width, then l = 3w. The formula for the area A of a rectangle is: A = lw. It's given that the area A = 60 square inches (in²); t...
1- B
2- C
3a- false
3b- false
3c- true
3d- true
3e- true
Answer:
x+4
Step-by-step explanation:
What I like to do in these types of problems is to separate the terms with a variable and those without.
So move +4 to the very end of the problem to make it look like this:
6x-3x-2x+4
Now simply subtract! After subtracting the first two terms (6x and -3x) it should look like this:
3x-2x+4
Then subtract once more (3x-2x)!
x+4
This cannot be simplified anymore so x+4 should be your final answer!
Answer:
13
Step-by-step explanation:
Answer: Use calculations for population standard deviation.
Step-by-step explanation:
The population standard deviation is defined as
- a parameter which is a fixed value
- evaluated by considering individual in the population.
A sample standard deviation is defined as
- a statistic ( whose value is not fixed ).
- Evaluated from a subset (sample) of population.
Since, data set represents the heights of all students in the middle school with 600 students which is population here.
So, we do calculations to find population standard deviation.
