All categories

3 years ago

Find an explicit formula for the arithmetic sequence 170,85,0,-85..., d(n)=

Mathematics

1 answer:

irinina [24]3 years ago

8 0

Answer:

d(n) = 85 * ( 3 - n )

Step-by-step explanation:

Let's find the common difference of the terms (if any).

The common difference is = 85 - 170 = 0 - 85 = -85 - 0 = -85

For an arithmatic sequence with first term a, common difference d,

nth term = a + ( n - 1 ) * d

So, d(n) = 170 + ( n - 1 ) * (-85)

= 255 - 85n

= 85 ( 3 - n )

[ If there's any mistake, please inform me ]

You might be interested in

How do I calculate this problem?

Evgesh-ka [11]

Answer:

22,000÷15%x6

Step-by-step explanation:

and that will you your answer

6 0

3 years ago

List seven guidelines that will help you plan a working budget.

Nutka1998 [239]

Gather financial details, list all sources of income, categorize expenses, list supplies, other expenses, calculate overall cost and subtract from your income, if needed tweak budget.

7 0

3 years ago

Please help me fast i need help

Rasek [7]

Answer:

minimum- 19

first quartile - 26.5

median - 29

third quartile - 31

maximum - 40

Step-by-step explanation:

7 0

3 years ago

what is an equation of the line that is parallel to the line with y=-.60x+2 and passes through the point (10,-10)

sp2606 [1]

y = -0.60x - 4

because the slope stays the same because it is parallel and the y intercept for the new equation ends up being -4

4 0

3 years ago

Find all zeros of function and write the polynomial as a product of linear factorsX^3-x^2+9x-9

mart [117]

Answer:

$\large\boxed{x=1\ \vee\ x=-3i\ \vee\ x=3i}$

Step-by-step explanation:

$\text{The zeros:}\\\\x^3-x^2+9x-9=0\\\\x^2(x-1)+9(x-1)=0\\\\(x-1)(x^2+9)=0\iff x-1=0\ \vee\ x^2+9=0\\\\x-1=0\qquad\text{add 1 to both sides}\\x-1+1=0+1\\\boxed{x=1}\\\\x^2+9=0\qquad\text{subtract 9 from both sides}\\x^2=-9$

8 0

3 years ago