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3 years ago

Does this table represent a function? why why not? 2 1 2 4 3 4 4 2

1 answer:

Natasha2012 [34]3 years ago

8 0

No its not if this is a (X,Y). You cannot have 2 of the same x's and different Y's. You can have the same Y's with 2 different X's. Ask questions if you still need help :)

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Foe the AP given by a1,a2,......,an,...with non zero common difference, the equation satisfied are

user100 [1]

The given sequence is
a₁, a₂, ..., $a_{n}$

Because the given sequence is an arithmetic progression (AP), the equation satisfied is
$a_{n}=a_{1}+(n-1)d$
where
d = the common difference.

The common difference may be determined as
d = a₂ - a₁

The common difference is the difference between successive terms, therefore
d = a₃ - a₂ = a₄ - a₃, and so on..

The sum of the first n terms is
$S_{n}= \frac{n}{2} (a_{1}+a_{n})$

Example:
For the arithmetic sequence
1,3,5, ...,
the common difference is d= 3 - 1 = 2.
The n-th term is
$a_{n}=1+2(n-1)$

For example, the 10-term is
a₁₀ = 1 + (10-1)*2 = 19
Th sum of th first 10 terms is
S₁₀ = (10/2)*(1 + 19) = 100

8 0

3 years ago

A rectangular picture frame has a width of 9 cm and a length of x cm.

Fantom [35]

Answer:

x+9

Step-by-step explanation:

the perimeter of any polygon is the sum of all the sides

7 0

3 years ago

Your housing and fixed expenses are $702.38 per month do you want to have a four month emergency fund and save it over a nine mo

MrMuchimi

Answer:

For Review: Planning Ahead and Contracts Quick Check... these are the answers...

1) B. Yes, you want to begin saving at least 25 years before you plan to retire

2) D. all of the above

3) $2,341.27 per month realized income

4) Your housing and fixed expenses are $702.38 per month do you want to have a four month emergency fund and save it over a nine month period of time how much do you need to save per month?

Answer #4) $312.17 /month

Step-by-step explanation:

702.38 * 4 = 2,809.52 How much you will need to save for 4 months worth or expenses.

Now divide by 9 because that is how many months you will take to save up...

2,809.52 / 9 = 312.17

Answer) $312.17 per month, for 9 months to save 4 months worth or expenses.

8 0

3 years ago

Find all points having an x-coordinate of 2 whose distance from the point (-1,-2) is 5

mariarad [96]

$The\ equation\ of\ the\ circle:(x-a)^2+(y-b)^2=r^2\\\\where\ (a;\ b)\ -the\ coordinates\ of\ the\ center;\ r-the\ radius\\-----------------------------\\(-1;-2)-the\ center\ of\ the\ circle\\r=5\\\\The\ equation:(x+1)^2+(y+2)^2=5^5\\\\Put\ x=2\ to\ the\ equation:\\\\(2+1)^2+(y+2)^2=25\\3^2+(y+2)^2=25\\9+(y+2)^2=25\\(y+2)^2=25-9\\(y+2)^2=16\iff y+1=\pm\sqrt{16}\\\\y+1=-4\ or\ y+1=4\ \ \ \ \ |subtract\ 1\ from\ both \sides\\y=-5\ or\ y=3\\\\Answer:(2;-5)\ and\ (2;\ 3).$

5 0

3 years ago

4th grade math the 8s in 88,000 answers

Tomtit [17]

Explain more are you trying to figure out how much the 8s are worth in the number

7 0

3 years ago

Read 2 more answers