Answer:
I think this question needs more information.
Step-by-step explanation:
to figure out 110% of the students who walk, we need to know how many students walked to school.
Answer:
Part 1:
Angle DCB is a right angle.
So, angle DCA + angle ACB = 90
Angle ACB = 90 - angle DCA = 90-50=40
Answer is option C. 40
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Part 2:
Angle DCB is a right angle.
So, angle DCA + angle ACB = 90
Angle ACB = 90 - angle DCA = 90-60=30
Answer is option B. 30
Answer:
Step-by-step explanation:
The higher standard deviation of any data represents diversified data or data having more scattered value . Average value may be same for two samples of data having different standard deviation . So option one is incorrect. 3 rd option is also incorrect.
The scores of the second test were more widespread than the first , because its standard deviation is more for second test. option 2 is in- correct .
none is correct.
