Answer:
The answer is a functun only hope this helps
Step-by-step explanation:
The correct answer is 4. 16+28=44 and 4+7=11 44/11=4 so the answer is 4.
Answer:
Step-by-step explanation:
So explicit formula essentially is general term formula. Or a formula that when you put in a value for n, you can get that number term in the arithmetic sequence. The way this formula is written is:
Where is the term (result of this formula) that is based on whatever value you put in for n
is the first term of the sequence
n is the term number that you want
and d is the common difference
So to fill in a general formula or explicit formula all we need is and d, because this gives us a general expression for any term we choose, or for any value of n
So to find d, all we have to do is take the difference between a term in front and a term behind that term. Ill show you what I mean:
So if we consider the sequence above we can do
-3 - 3 or -9 - (-3) or 15 - (-9) or -21 -(-15) all of these will give us the value for d (we just take a term before and subtract it by the term after)
So all of these come out to a value of -6
So d = -6
is just our first term so: = 3
Therefore, our explicit formula is
Answer:
The system of equations has infinite solutions. True for all y and x.
Given equations:
x + 4y = 0
20y = - 5x
Make x the subject for equation 1:
x + 4y = 0
x = -4y
Plug x as -4y in second equation:
20y = - 5x
20y = - 5(-4y)
20y = 20y
0 = 0
L.H.S = R.H.S
True for all y.
Therefore true for all x.