Answer:
-8ab - 2a - 7
Step-by-step explanation:
Since you're subtracting/adding I like taking away the parentheses which makes the equation: -2ab - 2a - 5 - 6ab - 2
You combine like terms and get:
-8ab - 2a - 7
Answer:
Step-by-step explanation:
MP=27, MN=NO=OP=MP/3=27/3=9
LN=MP-2MN
LN=45-2(9)
LN=45-18
LN=27
1/2x -5+2/3x =7/6x+4
First, you need to find the least <span>common </span>denominator between the 3 fractions....
2-3-6 The GCF is 6...
So to get rid of the fractions, multiply the whole equation by 2
6[ 1/2x -5+2/3x =7/6x +4 ]=
3x -30 +4x =7x +24
Now that we got rid of our fractions, we combine like terms...
3x -30 + 4x= 7x + 24
7x -30 = 7x + 24
-30 = 24 is not true
So, there is no solution
Hope this helps Nic
If you have seen this method in school before....
Maybe this will seem familiar
Good Luck!<span />
Answer:
4
Step-by-step explanation:
The z-score is calculated by the following formula
z=(x-μ)/σ
where
μ=Population mean
σ=Population standard deviation
If the z-score for a specific sample mean is discussed then z-score is computed as
z=xbar-μ/σxbar.
where
μ=Population mean
σxbar=Sample standard deviation
As the population mean and mean of sampling distribution of mean are equal so, μ is used in above equation.
Now, the z-score is given
1.5=xbar-μ/σxbar
σxbar=xbar-μ/1.5.
Also we know that z-score corresponds to a score that is 6 points above mean which means that xbar-μ=6.
σxbar=6/1.5
σxbar=4.
Thus, the required sample standard deviation is 4.
You can invite 2 people+ you so that would be 3 people.So 1 bevrage and one sandwitch each person and you have 10$ tip
