Mad confused so please help shisters!
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Mathematics, added 2021-11-26 20:32:25
Find a1 and d for an arithmetic sequence with these terms. a3=-8 and a7=32 ...
Mathematics, added 2021-11-26 19:21:16
Find a1 and d for an arithmetic sequence with these terms. a3=-8 and a7=32 ...
Answered by geerky42
So information you gathered are: - Region is square with side length 175 km - There was about 214 plants per square kilometer (km²) So first we need to find area of region. That would be 175 km × 175 km = 30625 km² So now we know that for each single square with length 1km, there are 214 plants. So then we would need to multiple density by total area to get approximation for the total number of cactus plant. ( 214 plants / 1 km² )( 30625 km² ) Which is roughly same as ( 200 )( 30000 ) = ( 3 × 10⁴ )( 2 × 10² ) Hope this helps.