Answer:
-15/2
Step-by-step explanation:
The next step would be to distribute the negative two through the parenthesis,
-2n-6=9
then you add the six, -2n= 15
then you divide by 15 by negative 2 and get -15/2
Answer: the observer should consider to eliminate or to retake the third measure.
Explanation:
The four measures taken are 124.53, 124.55, 142.51 and 124.52.
As it can be easily seen, the third measure is much different from the other three. This means that something went wrong during the observation: it can be either the measure taken wrong or that the number was written wrong (if you switch the 2 and the 4 you get a number similar to the other ones).
If the third measure is not considered, an estimate of the mean would place it around 124.5, while if the outlier (the detatched number) is considered an estimate of the mean would increase to about 129.
Therefore, in order to obtain a more reliable mean, the observer should consider to eliminate or to retake the third measure.
Answer:
y = 3x.
Step-by-step explanation:
To find out the equation, put it this way. For every 3 cans, there are 9 tennis balls. So if you put it as 9/3, that means that for every can, there are 3 tennis balls. y = 3x. The x is the variable for how many cans there are. If there are 5 cans, the five would multiply by 3 and then thats your answer.
I hope I helped.
Brainliest would be appreciated.
Have a nice day.
Answer:
Therefore
![75\div 5 - [(9-7)\times 3 ]\times 2 = 3](https://tex.z-dn.net/?f=75%5Cdiv%205%20-%20%5B%289-7%29%5Ctimes%203%20%5D%5Ctimes%202%20%3D%203)
Step-by-step explanation:
To Find:
Value of expression
75 ÷ 5 - [( 9 - 7 ) × 3 ] × 2
Solution:
PEDMAS rule
It explains the order of operations to solve an expression.
According to Pedmas rule, if an expression contains brackets ((), {}, []) we have to first solve or simplify the bracket followed by of (powers and roots etc.),
then division, multiplication, addition and subtraction from left to right.
P - parenthesis
E- exponent
D/M - Div or Multiply which ever comes first
A/S - Add or Sub which ever comes first.
So first we will solve the Parenthesis we get
Step 1. Parenthesis operation
75 ÷ 5 - [( 2 ) × 3 ] × 2
Step 2. Parenthesis operation
![75\div 5 - [(2)\times 3 ]\times 2](https://tex.z-dn.net/?f=75%5Cdiv%205%20-%20%5B%282%29%5Ctimes%203%20%5D%5Ctimes%202)
Step 3. Division
![15 - [6]\times 2](https://tex.z-dn.net/?f=15%20-%20%5B6%5D%5Ctimes%202)
Step 4. Multiplication

Step 5. Subtraction
3
Therefore
![75\div 5 - [(9-7)\times 3 ]\times 2 = 3](https://tex.z-dn.net/?f=75%5Cdiv%205%20-%20%5B%289-7%29%5Ctimes%203%20%5D%5Ctimes%202%20%3D%203)
Answer:
57
Step-by-step explanation:
57 is a composite number