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
ExtremeBDS [4]
3 years ago
11

the nth term of a sequence is given by an²+bn where a and b are integers the 2nd term of the sequence is 2 4th term of the seque

nce is 20. find the 6th term of the sequence
Mathematics
2 answers:
stealth61 [152]3 years ago
7 0

Answer:

54

Step-by-step explanation:

Tn = an²+bn

T2 = a2²+2b

2 = 4a +2b

Multiply all through by 2

4 = 8a +4b

4b = 4-8a

T4 = a4² + 4b

20 = 16a +4b

4b = 20-16a

4-8a = 20-16a

16a -8a = 20-4

8a = 16

a = 16/8 = 2

4b = 4-8a = 4-8(2) = 4-16 = -12

b = -12/4 = -3

T6 = a6² + 6b

T6 = 2(36) + 6(-3) = 72 -18 = 54

alex41 [277]3 years ago
4 0

Answer:

54

Step-by-step explanation:

You might be interested in
Solve all 5 questions for 62 points if they are correct you will be marked brainiest
katen-ka-za [31]

Answer:

1.0.003

2.40 minutes

3.a,e

4.a,c,d

5.1/24

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
What is the answer and how do I solve?
8_murik_8 [283]
Because it is a 90° angle and the legs are congruent, the legs intersect with the hypotenuse at the same angle, so the other, unnamed angle at the bottom left is equal to x.

Now we can state that:

2x + 90 = 180
2x = 90
x = 45
4 0
3 years ago
Clare has 5 yards of ribbon. It takes 1/2 yard to make a bow. How many bows can Clare make with the ribbon? Write a multiplicati
KonstantinChe [14]

Answer:

10 yards (Add label!!)

Step-by-step explanation:

5x1/2=10

8 0
2 years ago
Write 68.94 in word form
olga55 [171]

Answer:

sixty-eight and ninety-four hundredths

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
Evaluate 2LW + 2HL + 2HW for L = 3,W = 2, and H = 4. 48 46
JulijaS [17]
2(3)(2) + 2(4)(3) + 2(4)(2)

2(6) + 2(12) + 2(8)

12 + 24 + 16

52

Hope this helps!
7 0
3 years ago
Read 2 more answers
Other questions:
  • Help 10 minutes please
    12·1 answer
  • What is the volume of a triangular pyramid that is 4ft tall and has a base area of 3 square feet
    9·1 answer
  • Find the difference x/7x^2-13x-24 - 2x/7x^2-30x+27
    8·1 answer
  • Solve the equation -1/2 = c-6/7
    15·1 answer
  • John has 175cm and 1.7m of rope whose rope is longest
    13·1 answer
  • At a local festival, general admission was $3 for students and $5 for adults. 331 people came to the festival and they sold a to
    14·1 answer
  • Find the next term in the sequence 1, 4, 9, 16, 25, ….
    12·1 answer
  • Please use distribution and no need to graph.
    10·1 answer
  • Dulari, a single, member of the military was stationed at Camp Pendleton California on July 1, 2020, Her Henri company transferr
    11·1 answer
  • What is the value of the rational expression<br> 2x- 1<br> x+5<br> when x = 0?
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!