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
Vinil7 [7]
3 years ago
15

. Find the 20th term of the arithmetic sequence 15, 9, 3, -3

Mathematics
1 answer:
vova2212 [387]3 years ago
3 0

Answer:

a20 = -99

Step-by-step explanation:

hello :

the nth term in this  arithmetic sequence is : an = a1 + (n -1 )d

a1 = 15   a2 = 9       d = a2-a1 = 9-15 = -6  ( common difrence)

an = 15 + (n -1 )(-6)

an = 15+6-6n

an = -6n+21

the 20th term when n = 20 :  a20 = -6(20)+21 = -99

You might be interested in
What is 118/13 = 59/z?
gulaghasi [49]
If you're finding the value of z, z would equal 13/2 or 6.5
:)
7 0
3 years ago
Read 2 more answers
5x - x = -12 what is x???
aleksley [76]
X would equal -3. 5x-3 would equal -15, and 2 negatives would equal a positive. So, -15+3 would equal -12.
3 0
3 years ago
Read 2 more answers
Guys plz help me answer this!!!!
Zolol [24]

Answer:

p= 2

Step-by-step explanation:

Isolate the variable by dividing each side by factors that don't contain the variable.

6 0
3 years ago
Write an equation of the trend line rounding to two decimal places needed for this problem choose the points (1990, 253) and (20
solniwko [45]

Answer:The answer is C


Step-by-step explanation:


6 0
3 years ago
1.3 lesson help please
Airida [17]

Answer:

1. 125

2. 25

3. 40

4. 39

First question:

(15-10)^2 + (15-5)^2

parentheses first to get 5^2 + (15-5)^2

exponents next to get 25 + (15-5)^2

parentheses again 25 + 10^2

exponents again 25 + 100 = 125

Second question:

simplify the exponents (3 *3) + (4 * 4) + (2 * 2) to get 9 + 16 + 4 = 29

Third question:

simplify in the parentheses 6 1/7 - 1/7 = 6

divide 60 by 6 to get 10

multiply 10 by 4 to get 40!

Fourth question:

simplify the fractions to get 1/3 + 8/3 = 3

multiply the 3 by 13 to get 39

7 0
2 years ago
Read 2 more answers
Other questions:
  • Sabrina threw a coin from a building 160 feet high at an initial speed of 30 feet per second. How many seconds will it take the
    11·2 answers
  • If C is between A and B then AC + CB = AB. <br><br> A. Always <br> B. sometimes<br> D. Never
    6·1 answer
  • For the rational function f(x)= 5x3-x/2x3 , identify any removable discontinuities.
    15·1 answer
  • 10 3/4*5 1/4*9 1/2 as a mixed number
    5·1 answer
  • Solve for x: 1/2x+5=11 .
    14·2 answers
  • If Ill m, solve for x and y.<br> (7x - 23)<br> 49<br> (3x)<br> (11y - 1)<br> X =<br> y =
    7·1 answer
  • The spinner is divided into 4 equal parts: yellow, green,blue,and red. Dorian says that if you spin the spinner twice, then ther
    15·2 answers
  • Write the equation of the line that passes through the points (-9, -7) and (-4, 4).
    10·1 answer
  • Which graph represents inequality y &lt;2x+3
    14·1 answer
  • PLEASE HELP PLEASE HELP
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!