The first row in an auditorium has 10 seats. Each successive row has 4 more seats. Use a partial sum to find the total number of seats in the first 20 rows.
A. 400
B. 1240
C. 960
D. 840
E. None of these
Answer: C
Mathematics
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A.
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D.
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Determine if the statement is a proportion.I.
II.
A. I is a proportion, II is not a proportion. B. I is not a proportion, II is a proportion. C. I and II are both proportions. D. Neither I nor II are proportions.
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In a balance scale diagram, which object represents the arithmetic mean?
a. Fulcrum b. Balance board c. Color of font d. Weights on scale
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Find parametric equations to represent the line segment from (-3,4) to (12,-8).
Mathematics