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
Ganezh [65]
3 years ago
6

Please help me for the brainliest answer

Mathematics
1 answer:
Oxana [17]3 years ago
6 0

Answer:

aₙ= -2n²

Step-by-step explanation:

<h2><u>Solution 1:</u></h2>

The sequence:

  • -2, -8, -18, -32, -50

The difference between the terms:

  • -6, -10, -14, -18
  • a₁= -2
  • a₂= a₁ - 6 = a₁ - 2*3= a₁- 2*(2²-1)
  • a₃= a₂ - 10 = a₁ - 16= a₁ - 2*8= a₁ - 2*(3²-1)
  • a₄= a₃- 14= a₁ - 30= a₁ - 2*15= a₁ - 2*(4² -1)
  • ...
  • aₙ= a₁ -2*(n²-1)= -2 -2n² +2= -2n²

As per above, the nth term is: aₙ= -2n²

<h2><u /></h2><h2><u>Solution 2</u></h2>

The sequence:

  • -2, -8, -18, -32, -50
  • -2*1, -2*4, - 2*9, -2*25
  • -2*1², -2*2², -2*3², -2*4², -2*5², ..., -2*n²
  • aₙ= -2n²
You might be interested in
Plz help meee thanks
RoseWind [281]

Answer:

Step-by-step explanation:

Ok, I’ve answered this questioned in a task of mine before, I believe it’s this here we go:

It should be 20 degrees is more than or equal to -60 degrees because the question is asking the relation BETWEEN the two and it has to be an inequality so yea!

I’m in 7th grade I KNOW YOUR PAIN!!!

6 0
3 years ago
Which expression is equivalent to 1/6 - 3/8 + 1/2
serg [7]

Answer:

7/24

Step-by-step explanation:

1/6-3/8+1/2

4/24-9/24+12/24

-5/24+12/24

7/24

3 0
2 years ago
Which of the following ratios is used in finding the sine of an angle in a right triangle?
stira [4]
The ratio is called the Opposite leg or also known as Hypotenuse. Usually, in a right angle, the size of the one angle is 90 degrees while the other which is less than 90 degrees is called the hypotenuse. It is the opposite side of the angle measured 90 degrees
3 0
3 years ago
Mark purchased a 20 foot long sub for a party he cuts the sandwich into 5/12 foot sections into how many pieces does he cut the
vazorg [7]

Answer:

48 pieces

Step-by-step explanation:

20÷5/12=20*12/5=240/5=48

5 0
2 years ago
Which undefined term can contain parallel lines
Dahasolnce [82]
The undefined term that can contain parallel lines are line.
5 0
2 years ago
Other questions:
  • How many unique ways are there to arrange the letters in the word HATTER?
    5·2 answers
  • The US Air Force requires that pilots...
    11·2 answers
  • I NEED HELP BAD!!!!! BRAINLIEST FR FIRST RIGHT ANSWER
    15·1 answer
  • In the number 3,657,892 which digit is in the millions place
    8·1 answer
  • Give me the answer for question 3 please
    11·1 answer
  • At what rate was an investment made that obtains $125.37 on $597 over three years?
    13·1 answer
  • a sales person receives a 3% commision on sales. the sales person recieves $180 in commision. what is the amount of sales?
    15·1 answer
  • 5x+6y=13;-5x+2y=11. how do I solve this
    6·1 answer
  • What is the area of a circle with a diameter 42 inches
    8·2 answers
  • What does the relationship between what does the relationship between the slopes of corresponding line segments in the preimage
    14·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!