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brenda0014
17.01.2020 •
Mathematics
In the geometric pattern below, n represents the number of blocks in the bottom row of each figure.
write a function that models the total number of blocks in terms of n.
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Ответ:
n=1→f(n)=f(1)=1
Options 2 or 3
Figure 2
n=2→f(n)=f(2)=5
With Option 2:
f(n)=f(n-1)+2n
n=2→f(2)=f(2-1)+2(2)
f(2)=f(1)+4=1+4→f(2)=5 ok
With Option 3
f(n)=f(n-1)+n
n=2→f(2)=f(2-1)+2
f(2)=f(1)+2=1+2→f(2)=3 No
Second option: f(1)=1; f(n)=f(n-1)+2n; for n>=2
Ответ:
500 minutes
Step-by-step explanation:
100% = x
15% = 75
We multiply 75 by 100 and divide the answer by 15
7500 / 15 = 500 minutes