The sum of 12th and 18th terns of an arithmetic sequence is 298. a, Find 15th term? (Hint:Middle term) b,What is the sum of 1st and 29th terms? (Hint:Same pair sum) c, what is the sum of first 29th terms? (sum=middle term ×number of terms)
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“It's amazing how a little tomorrow can make up for a whole lot of yesterday.”
― John Guare, Landscape of the Body
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It is called plasmolysis. When a plasmolysed cell is placed in a hypotonic solution, (i.e., the solution having solute concentration lower than the cell sap), the water moves into the cell because of the higher concentration of water outside the cell than in the cell. The cell then swells to become turgid.
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