Hd the exact area for the triangle. 30
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4
h
2.
0 6.93
273
0 473
O 272
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Aline passes through the point (2, -4) and has a slope of 0, what is the equation of the line? plz fast

International calls require the use of a country code. many country codes a 3-digit numbers. country codes do not begin with a 0 or 1. there are no restrictions on the second and third digits. how many different 3-digit country codes are possible?

Researchers were interested in whether relaxation training decreases the number of headaches a person experiences. they randomly assigned 20 participants to a control group or a relaxation training group and noted the change in number of headaches each group reported from the week before training to the week after training. which statistical analysis should be performed to answer the researchers' question?