In triangle abc , bc is extended to d. if a=50 and cal=120, then.

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Two customers went to a post office. first customer paid $12 for 14 and 5 envelopes the second paid 24.80 for 10 postcards and 15 envelopes. what is cost of each envelope?

Is a positive integer raised to a negative power always positive

Write the slope-intercept form of the line that passes through the point (1, 0) and is parallel to x - y = 7. t