mruffier6239
06.01.2020 •
Mathematics
Last question on unit ! !
a supermarket display consists of boxes of soda. the bottom row has 38 boxes. each row has four fewer boxes than the row below it. the display has eight rows.
a) write and use the function to determine how many boxes are in the top row. show your work.
b) use the appropriate formula to determine the number of boxes in the entire display. show your work.
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Ответ:
Step-by-step explanation:
b) Sum = N/2[2F + (N - 1) x D]
= 6/2[2*23 + (6 - 1) x -3]
= 3 [46 + (5) x -3 ]
= 3 [46 + -15 ]
= 3 [ 31 ]
= 93 - total number of boxes in the entire display.
Ответ:
4.2
Step-by-step explanation: