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beesbutterflyqueen
10.08.2021 •
Mathematics
Please help me with this question. Thank you so much everyone.
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Ответ:
1159
Step-by-step explanation:
She wants to read 1000 pages per week for five weeks.
So in total she wants to read 1000 * 5 = 5000 pages.
The first three weeks she read 894 pages per week.
So during the first three weeks she read a total of 894 * 3 = 2682 pages.
We want to find how many pages she must read per week for the last two weeks to reach her goal.
Goal: 5000 pages
Pages read so far: 2682
Weeks remaining: 2
To find how many pages she must read for the last two weeks we simply subtract the number of pages she read during the first 3 weeks (2682 ) by her goal ( 5000 )
5000 - 2682 = 2318
So she must read 2318 pages during the last 2 weeks.
If we want to find the amount of pages she must read per week during the last 2 weeks to reach her goal, we simply divide the amount of pages she must read during the last few weeks to reach her goal ( 2318 ) by the number of remaining weeks ( 2 )
2318 / 2 = 1159
So for the last two weeks she must average 1159 pages per week.
Ответ:
1159 pages
Step-by-step explanation:
According to Briana's goal,
Pages to be read per week = 1000 pages
Number of weeks = 5
So, pages to be read in 5 weeks
= 5×1000 pages
= 5000 pages
But in reality,
Pages read in each first 3 weeks = 894 pages
So, total pages read in all first 3 weeks
= 3×894 pages
= 2682
Pages remained to be read to complete the goal
= Pages to be read in 5 weeks according to her goal - Pages actually read in all first 3 weeks
= 5000 pages - 2682 pages
= 2318 pages
So, pages to be read in each last 2 weeks
= 2318 pages/2
= 1159 pages
So, Briana will have to need to average 1159 pages over the last two weeks to complete her goal.
Ответ:
t₁ = 1, the first term is 1 then
t₂ = 3, the second term is 3 then.
tₙ₊₂ = tₙ₊₁ + tₙ is another way of saying, the number after "n+1", which is "n+2", is going to be coming from the sum of the current term "n" plus the one right after "n+1" OR the next term is coming from the sum of the last two behind it.
to make it less jumbled, in short,
t₃ = 1+3 = 4
t₄ = 3 + 4 = 7
t₅ = 4 + 7 = 11.