queenpaige2015
01.12.2020 •
Mathematics
Cell X has a surface area of 60 um ^2 and a volume of 15 um^3. Cell Y has a surface area of 36 um^2 and a volume of 12 um^3. Using the information above, determine the surface-area-to-volume ratio of each cell. What is the SA:V ratio of the cell that will exchange materials with its environment at the fastest rate of diffusion?
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Ответ:
A
Step-by-step explanation: As the balls on the numbers 2 and 4 are completly full, we can rule out the ones that do not have the equal sign. The answer must have this ≤ or this ≥. This way it is not c.
solving the 2x + 3 ≥ 11
2x + 3 ≥ 11
2x ≥ 11 - 3
2x ≥ 8
x ≥ 4 (ok)
solving 4x - 7 ≤ 1
4x - 7 ≤ 1
4x ≤ 1 + 7
4x ≤ 8
x ≤ 8/4
x ≤ 2 (ok)