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Airida [17]
2 years ago
13

What is the 87th term of the arithmetic sequence with this explicit formula

Mathematics
1 answer:
emmasim [6.3K]2 years ago
8 0

Answer:Step-by-step explanation:

If there is a sequence and if we are to find its 87th term we must have the general term formula for the sequence.

Normally for sequences which follow a pattern there will be a formula for nth term.

Example is arithmetic sequence nth term = a+(n-1)d where a is the I term and d the common difference.

Similarly for geometric sequence nth term

= is the nth term

Thus to find the 87th term, we must be able to find out the pattern of the sequence by which any term is related to its previous term

Either general term formula or recurring formula should be given to get the 87th term

Step-by-step explanation: is arithmetic sequence nth term = a+(n-1)d where a is the I term and d the common difference. Still stuck? Get 1-on-1 help from an expert tutor now.

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Which of the following equations cannot be solved using real numbers?
dsp73

Answer:

x²+4=0

Step-by-step explanation:

x²=-4

√x² = √-4

x = 2i

x is an imaginary number

4 0
3 years ago
Solve n3 + 2n2 - 15n = 0 by factoring.
azamat
N³ - 2n² - 15n = 0

"n" 

n (n² + 2n - 15) = 0

n = 0

n² + 2n - 15 = 0

Δ = (2)² - 4(1)(-15)
Δ = 4 + 60 = 64

n' = (-2+8) / 2 = 6/2 =3
n'' = (-2-8) / 2 = -10/2 = -5

Solution:

S {-5 , 0 , 3 }
5 0
3 years ago
Read 2 more answers
100 POINTS
Shkiper50 [21]

Answer:

  6√3 ±3 ≈ {7.392, 13.392}

Step-by-step explanation:

The length of AB is the long side of a right triangle with hypotenuse CD and short side (AC -BD). The desired radius values will be half the length of EF, with AE added or subtracted.

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<h3>length of AB</h3>

Radii AC and BD are perpendicular to the points of tangency at A and B. They differ in length by AC -BD = 12 -9 = 3 units.

A right triangle can be drawn as in the attached figure, where it is shaded and labeled with vertices A, B, C. Its long leg (AB in the attachment) is the long leg of the right triangle with hypotenuse 21 and short leg 3. The length of that leg is found from the Pythagorean theorem to be ...

  AB = √(21² -3²) = √432 = 12√3

<h3>tangent circle radii</h3>

This is the same as the distance EF. Half this length, 6√3, is the distance from the midpoint of EF to E or F. The radii of the tangent circles to circles E and F will be (EF/2 ±3). Those values are ...

  6√3 ±3 ≈ {7.392, 13.392}

5 0
2 years ago
Read 2 more answers
35÷712/1000 show me the amount as a decimal
eduard

Answer:

0.0000491573

Step-by-step explanation:

7 0
3 years ago
3v squared + 27v - 30​
a_sh-v [17]

Answer: v= -10 & 1

Step-by-step explanation: first take out the gcf, in this case, 3.

3(v^2 +9v-10)

then factor that

3(v-1) (v+10)

solve.

v=1 and v= -10

6 0
3 years ago
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