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denis23 [38]
3 years ago
5

How do you solve 216 - 202?? -explained-

Mathematics
1 answer:
Serhud [2]3 years ago
6 0

Answer: 216 - 202 = 14

Step-by-step explanation:

It’s 14 because in my way, I separated the numbers, like this:

200 - 200 = 0

16 - 2 = 14

Since 0 is equal to nothing, the answer is 14.

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Complete each step in the following solution.
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Answer:

1)-6

2)-14

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Step-by-step explanation:

Hope this helps

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During which month did Mr.Warner spend the most on gas?
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Which explicit formula generates the infinite sequence 2, 9, 28, 65, 126, ...?
Dimas [21]
1. The terms of a sequence are denoted by u_{1} ,  u_{2}, u_{3}, u_{4}, u_{5},...

2.
 u_{1}  = 2  = 2*1

  u_{2} = 9 = 3*3
 
u_{3} = 28 = 4*7

u_{4} = 65 = 5*13

u_{5} = 126 = 6*21


3. so it is clear that the first columns add each time by one, and the second column add by 2, then by 4, by 6, by 8 and so on.

4. consider only the second column and how we get the terms, which we will call t_{1} , t_{2}, t_{3}, t_{4}, t_{5},...:

t_{1}=1

t_{2}=1+2

t_{3}=1+2+4=1+2+2*2

t_{4}=1+2+4+6=1+2+2*2+2*3=1+2(1+2+3)

t_{5}=1+2+2*2+2*3+2*4=1+2(1+2+3+4)

5.
So

u_{n}=(n+1)(1+2{1+2+3+....(n-1)})
        
         =(n+1)(1+2 [(n-1)n/2])

         = (n+1)(1+(n-1)n)
       
         =(n+1)( n^{2}-n+1 )


6. We can check: u_{3} = (3+1)( 3^{2}-3+1 )=4*(9-3+1)=4*7=28

7. Remark: Gauss addition formula: 1+2+3+....+n=n(n+1)/2


6 0
4 years ago
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torisob [31]

Answer:

The friend would pay $100

Step-by-step explanation:

The price of the card was $20 when Daniel bought it, it gained a value of $10 every year,

since Daniel bought it 3 years ago we will add $30 to $20 as the value increased by $10/year

so the price becomes $50, but his friend says he'll pay twice the value so,

$50×2= $100

8 0
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