Answer:
Mrs. McCarr buys 90 markers
Step-by-step explanation:
10 markers per package × 9 packages of markers = 90 markers in total
Student 4 has the largest percent error.
Step-by-step explanation:
The percent error of a measurement is given by

where
x is the value of the measurement
is the actual value
For student 1:

Percent error:

For student 2:

Percent error:

For student 3:

Percent error:

For student 4:

Percent error:

So, student 4 has the largest percent error.
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the angle measures in the regular polygon is B)140
the answer is 9.74972315 I hope you have the right answer I hope this is helpful
Answer:
abcdefghijklmnopqrstuvwxyz
Step-by-step explanation:
know i know my abcs why wont you sing with me