How many solutions does the system have?
1 answer:
Answer:
The system has two solution
Step-by-step explanation:
we have
----> equation A
----> equation B
Solve the system of equations by graphing
Remember that
The solution of the system of equations is the intersection point both graphs
There are two point of intersection between the two graphs
see the attached figure
therefore
The system has two solution
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Answer:
The estimation for the number of newborns who weighed between 1724 grams and 5172 grams is 595.
Step-by-step explanation:
Problems of normally distributed samples are solved using the z-score formula.
In a set with mean and standard deviation
, the zscore of a measure X is given by:
The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.
In this problem, we have that:
Proportion of newborns who weighed between 1724 grams and 5172 grams.
This is the pvalue of Z when X = 5172 subtracted by the pvalue of Z when X = 1724. So
X = 5172
By the Central Limit Theorem
has a pvalue of 0.9772
X = 1724
has a pvalue of 0.0228
0.9772 - 0.0228 = 0.9544
Estimate the number of newborns who weighed between 1724 grams and 5172 grams.
0.9544 out of 623 babies. SO
0.9544*623 = 595
The estimation for the number of newborns who weighed between 1724 grams and 5172 grams is 595.
- ➣ Circle:- A two-dimensional geometric figure, a line, consisting of the set of all those points in a plane that are equally distant from a given point (center).
- ➣ Circumference:- The line that bounds a circle or other two-dimensional figure
★ also circumference of a circle is also known as it's perimeter
- ➣To find circumference of circle when use formula
- ➢ r = radius (25inch.)
- ➢ value of π is 3.14
★ Hence circumference of circle=157inch
Hope it helps !