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Nimfa-mama [501]
3 years ago
10

What does a hidden question mean?

Mathematics
2 answers:
shutvik [7]3 years ago
6 0
A hidden question is a question that is not popped out. for example Amanda went to the mall yesterday. she brought 2 purses at the store that cost $8.95 each. the tags on the items were $6.07 each. she paid with a $50 bill. how much money did Amanda receive in change? answer: Amanda received $19.96 in change, yesterday at the mall.
gayaneshka [121]3 years ago
4 0
Hidden questions means questions that can't be seen.

I guess so...












You might be interested in
I need to know the next term in the sequence AND the nth term of all the sequences
ANEK [815]

I see you already did the ones where you figured out the formula.  There's a fun way that doesn't require figuring out the formula, called a forward difference table.

Let's work out the first one to learn the technique.  We write the sequence and under it the forward differences,

2 5 10 17 26

3 5  7  9

2 2 2  

We got 3=5-2, 5=10-5, 7=17-10, etc and the same for subsequent lines.  Eventually we get to an all constant line and we stop.

To extend the table we just add some constants to the constant line and work our way back up:

2 5 10 17 26 37 50

3 5  7  9  11  13

2 2 2   2  2

So we get 11 as 9+2 and 37 as 26+11 for our answer which matches the answer you already got.

Let's do the ones you haven't.

2 8  18 32 50 72

6 10 14 18  22

4  4  4   4  

Answer: 72

3 9  19  33 51   73

6 10 14  18  22

4 4  4    4

Answer: 73

2 11 26 47 74  107

9 15 21 27  33

6 6  6    6

Answer: 107

Three's our limit so I'll leave the last one to you.

---

A comment says we need the functions.  They're all quadratics.  I'll tell you how they want you to do it and how to do it in general.

They just want you to recognize these are all pretty close to just u_n=n^2.   The one that goes 3 12 27 etc. we recognize as just u_n=3n^2.   The one that goes 2 8 18 is just u_n =2n^2.  The one that goes 3 9 19 is one more than that so u_n=2n^2+1. The one that goes 2 11 26... is one less than 3 12 27 so is u_n=3n^2-1.  Again I'll leave the last one.

----

We can do these quadratics in general.  Let's work from our difference table.  If we have

f(n) = an^2 + bn + c

and we form the difference table for f(1), f(2), f(3) we get

a+b+c   4a+2b+c   9a+3b+c

3a+b     5a+b

2a

so we can use the first columns of our difference tables to get our polynomial.  

2 8  18 32 50 72

6 10 14 18  22

4  4  4   4  

Answer: 72

So we have 2a=4, so a=2

3a+b=6, so b=6-3(2)=0

a+b+c=2 so c=2-0-2=0

That gives us the obvious answer

u_n = 2n^2

3 9  19  33 51   73

6 10 14  18  22

4 4  4    4

Answer: 73

We have 2a=4 again so a=2, 3a+b=2 so b=0, and a+b+c=3 so c=1 giving

u_n = 2n^2+1

2 11 26 47 74  107

9 15 21 27  33

6 6  6    6

Answer: 107

2a=6 gives a=3

3a+b=9 gives b=0

a+b+c=2 gives c= -1

u_n = 3n^2-1

3 0
2 years ago
(8, -1) and slope m= -3 for slope intercept
ella [17]

Answer:

Slope-intercept Form: y = -3x + 16

Step-by-step explanation:

Point-slope: y- y_1 = m (x - x_1)

y + 1 = -3(x - 8)\\y \frac{+8}{-8}  = -3x + \frac{+24}{-8} \\y = -3x + 16

3 0
2 years ago
F(x) = x2 - 1 r the number that belongs in the gree x = -1; x = [?]​
grandymaker [24]
Bsbdhdnabsndnsnandjdns sbfj
5 0
3 years ago
Pls answer 3e≤6 ....................<br><br> thx.
ratelena [41]
Since
3e≤6 is false, there is no solution
No Solution
8 0
3 years ago
Last month, Steven had $4285.68 that he divided into two accounts. He deposited 1/3 into a savings account. He deposited the res
serg [7]
3/3-1/3=2/3 in checking account

1/3=4285.68/3=1428.56 in his saving account
2/3=1428.56x2=$2857.12 in his checking account#

hope this helps!/
4 0
3 years ago
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