Answer:
the no. is -7
Step-by-step explanation:
let the no. be x
5x-x+2=-26
=> 4x+2=-26
=> 4x=-26-2
=> 4x=-28
=> x=-28/4
=> x=-7
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Answer:
The 95% confidence interval for the mean is between 0.985g/cm² and 1.047 g/cm².
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 mean subtracted by M. So it is 1.016 - 0.0310 = 0.985 g/cm²
The upper end of the interval is the mean added to M. So it is 1.016 + 0.0310 = 1.047 g/cm²
The 95% confidence interval for the mean is between 0.985g/cm² and 1.047 g/cm².
Answer:
B.
Step-by-step explanation:
Answer:
D
Step-by-step explanation:
An isoceles triangle has two eqial sides and angles wich give it exactly one axe of symmetry