Based on the type of equations in the system, what is the greatest possible number of solutions? StartLayout Enlarged left-brace
1 answer:
Answer:
2
Step-by-step explanation:
Given the system of equations:
Comparing with the general standard equation of a circle
.
The first equation is an <u>equation of a circle centred</u> at (0,0) with a Radius of 3.
The second equation 9x+2y=16 is a <u>straight line equation.</u>
A straight line can only intersect a circle at a maximum of 2 points.
Therefore the greatest possible number of solutions to the equations in the system is 2.
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Answer:
Mean=50.
standard deviation=50.
Step-by-step explanation:
Let the perfect score be 100.
The mean(average) of a data is given by:
Here the number of data points are 100. out of which 50 attains a value 100,and 50 attains value 0.
so, sum of data points=50×100+50×0=5000.
Mean=50.
"Now the standard deviation of data points are calculated by firstly subtracting mean from every entry and then square the number and take it as new entry and calculate the mean of the new data entry and lastly taking the square root of this new mean".
Here if 50 is subtracted from each entry the new entry will have 50 entries as '50' and 50 entries as '-50'.
next on squaring we will have all the 100 entries as '2500'.
now the mean of these entries is:
=2500
taking it's squareroot we have
Hence, standard deviation=50.