How do I solve 5x+3=2(-4x-5)+2x
1 answer:
Answer:
Step-by-step explanation:
Distribute 2 through the parentheses.
5x+3=-8x-10+2x
Collect like terms
5x+3=-6x-10
Move variable to the left-hand side and change its sign. Move constant to the right-hand side and change its sign.
5x+6x=-10-3
Collect like terms. Calculate the difference
11x=-13
Divide both sides by 11 and you get
x= -13/11
Hope this helpsʕ•ᴥ•ʔ
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Answer:
The 95% confidence interval for the true population mean dog weight is between 62.46 ounces and 71.54 ounces.
Step-by-step explanation:
We have that to find our level, that is the subtraction of 1 by the confidence interval divided by 2. So:
Now, we have to find z in the Ztable as such z has a pvalue of .
So it is z with a pvalue of , so
Now, find M as such
In which is the standard deviation of the population and n is the size of the sample.
The lower end of the interval is the sample mean subtracted by M. So it is 67 - 4.54 = 62.46 ounches.
The upper end of the interval is the sample mean added to M. So it is 67 + 4.54 = 71.54 ounces.
The 95% confidence interval for the true population mean dog weight is between 62.46 ounces and 71.54 ounces.