IS (1, 2) of a solution set of x+ y = 3 and 2 x + 7 y = 16 ?
1 answer:
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Answer:
Step-by-step explanation:
After x=2, we see that the change in y over the change in x is positive since both variables increase with each other, so is where the function is increasing.
Answer:
If the weight is higher than 5.8886 gr would be considered significantly high
If the weight is lower than 5.6121 gr would be considered significantly low
Step-by-step explanation:
Previous concepts
Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".
The Z-score is "a numerical measurement used in statistics of a value's relationship to the mean (average) of a group of values, measured in terms of standard deviations from the mean".
Solution to the problem
Let X the random variable that represent the weights of a population, and for this case we know the distribution for X is given by:
Where and
And the best way to solve this problem is using the normal standard distribution and the z score given by:
For the case when z =-2 we can do this:
And if we solve for X we got:
And for the other case when Z=2 we have:
And if we solve for X we got:
If the weight is higher than 5.8886 gr would be considered significantly high
If the weight is lower than 5.6121 gr would be considered significantly low
Answer: choice A
Step-by-step explanation:
by rearranging the initial inequality you’ll get
which equals
then multiply both sides by 2/3
Answer:
option C.
Step-by-step explanation:
we know that
The volume of the triangular pyramid is equal to
where
B is the area of the triangular base
h is the height of the pyramid
In this problem we have
substitute in the formula