connorgking
18.09.2019 •
Mathematics
Yohanna is conditioning all summer to be fit for the next soccer season at his high school. he incorporated walking planks into his daily workout regime. each day, he will complete 4 more walking planks than the day before. if he starts with 5 walking planks on the first day, how many walking planks will he do on the twelfth day?
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Ответ:
so
aritmetic sequence
first term is a1
common difference is d
an=a1+d(n-1)
first term is 5 planks
increases by 4 each day
an=5+4(n-1) is the equation for how many he will do on the nth day
12th day
a12=5+4(12-1)
a12=5+4(11)
a12=5+44
a12=49
49 walking planks
Ответ:
the length of each edge is 6 inches
Step-by-step explanation:
sorry if wrong im not the best at math