1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
gtnhenbr [62]
2 years ago
5

Which term of the AP 21, 18, 15 ...... is -81 ?​

Mathematics
1 answer:
amid [387]2 years ago
3 0

Given AP is 21 ,18,15,...

First term = 21

Common difference = 18-21 = -3

Let an = -81

We know that

an = a+(n-1)d

⇛21+(n-1)(-3) = -81

⇛ 21-3n+3 = -81

⇛24-3n = -81

⇛ 24+81 = 3n

⇛ 105= 3n

⇛ n = 105/3

⇛ n = 35

35th term of the AP is -81.

<u>also</u><u> read</u><u> similar</u><u> questions</u><u>:</u> Which term of a AP 5 , 13 , 21 ,... is 181?

brainly.com/question/2406241?referrer

Which term of the AP:3, 8, 13, 18,...,is 78?

brainly.com/question/15380012?referrer

You might be interested in
Please Help!! and explain in detail!!!!
tatuchka [14]

Answer:

  1/36 = 0.02777...

Step-by-step explanation:

Given the sequence 1, 0.25, 0.111..., 0.0625, 0.04, you would like to know the next term.

<h3>Terms</h3>

We recognize the decimal values to be equivalent to ...

  1, 1/4, 1/9, 1/16, 1/25

That is, they are the reciprocals of successive squares.

<h3>Next term</h3>

The next term will be the reciprocal of the 6th square:

  1/36 = 0.02777...

8 0
1 year ago
SIMPLE CORDINATES. BRAINLIEST, 5 STAR, AND A LIKE IN RETURN. SHOW SOME WORK PLEASE THIS IS DUE SOON.
Natasha2012 [34]

Answer:

D they both are correct, because it is the reflection that are equal to each coordinate.

Step-by-step explanation:

7 0
2 years ago
I need answer for 4 5 6 plse sent fast
tekilochka [14]

Answer:

Answer for what?

Step-by-step explanation:

5 0
3 years ago
Multiply (-2/3) (5/4)<br><br> Quick help!
ki77a [65]

Answer: -\frac{5}{6}

Step-by-step explanation:

When you multiply fractions, you multiply straight across and simplify.

-\frac{2}{3}*\frac{5}{4}           [multiply]

-\frac{10}{12}               [simplify]

-\frac{5}{6}

Now, we know that the product is -\frac{5}{6}.

8 0
3 years ago
PLEASE HELP
gladu [14]
Since the balloon is at h height and has a change of 5 ft that means it could go up (+5) or down (-5) ft. So the answer would be c and D

h+5 and h-5
5 0
3 years ago
Other questions:
  • 3. There are 8 mice in an attic. Their population is growing at a rate of 15% per month.
    9·2 answers
  • Zane each one eighth of a pizza later he is a half of the same Pizza to eat more the first time or the second time
    11·1 answer
  • What is the equation of the line, in point slope form, that passes through the points (4,8) and (2,-2)
    5·1 answer
  • Help me please!! Thank you!
    8·1 answer
  • Find the perimeter if a = 1 b = 4 c = 6 d = 5
    11·2 answers
  • A sample space consists of five simple events, E1, E2, E3, E4, and E5. a If P(E1) = P(E2) = 0.15, P(E3) = 0.4, and P(E4) = 2P(E5
    11·1 answer
  • BÉ is an angle bisector of ZABC.
    11·1 answer
  • Solve for x.<br> -4(2x + 5) + 2 + 2 = -11
    9·1 answer
  • Use the following situation for the next few questions:
    13·1 answer
  • How to approximate to 3 significant figures
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!