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
Effectus [21]
3 years ago
11

Sum of first n terms of an ap sequance is 3n2+5n.what is the sum of its first n+1 terms.find the sum of its first 10 terms.

Mathematics
1 answer:
inessss [21]3 years ago
3 0

Answer:

a) 3n^2 + 11n + 8

b) 350

Step-by-step explanation:

10) 3(10^2)+ 5*10 = 350

n+1) 3(n+1)^2 + 5(n+1)

        3(n^2 + 2n + 1) + 5n+5

         3n^2 + 6n+3 + 5n + 5

           3n^2 + 11n + 8

You might be interested in
A tortilla maker produces 100 tortillas in half an hour. if he works from 9 am to 5 pm with a one hour lunch and two 15-minute b
ira [324]
The answer is 1300 i think,
hope it helps!
3 0
3 years ago
Read 2 more answers
Write the quadratic equation of the parabola that passes through (-2,5) and has a vertex of (1,-3)
guapka [62]
-8/3x - 1/3 is the equation
6 0
2 years ago
Estimate the surface area of the rectangular prism.<br> A) 28cm<br> B) 32cm<br> C) 64cm
Ede4ka [16]

Answer:

it a

Step-by-step explanation:

4 0
3 years ago
Hellllllllllp! Someone help
uysha [10]

Answer:

4. (2, 3)

5. (0, 1)

7. (-1, 2)

Step-by-step explanation:

I hope this helps! Have a nice dayy! :)

3 0
3 years ago
Read 2 more answers
SOLVE FOR M <br><br> −4m+7=−5
Masteriza [31]

Answer:

m=3

Step-by-step explanation:

-4m+7= -5

Combine like terms.Put +7 on other side.

-4m= -5-7

-4m= -12

It's -4 times m = -12 right ?

So the answer is m=3 because m= -12/-4

6 0
2 years ago
Other questions:
  • Please help with this probability question and if you could explain how to get the answer in order for me to understand!
    5·1 answer
  • Arrange the parabolas represented by the equations in increasing order with respect to the y-values of their directrixes.
    13·1 answer
  • Lacy wants to paint her bedroom walls she has to cover 1,162.5 ft.² about how many gallons of paint will she need
    5·1 answer
  • Write the prime factorization of 20 using exponents
    6·1 answer
  • Simplify (-8a-5a-10c)-(2a+10b+20c)
    7·2 answers
  • Anyone know how to do these?
    5·1 answer
  • What are the areas of each smaller rectangle and the large rectangle?
    15·1 answer
  • MY PASSWORD AND USERNAME IS 592799999.592799999
    12·1 answer
  • What is the slope of the line shown below
    8·1 answer
  • Solve for m and q:<br> m+ 2 = q - 4<br> 5m - 33 = q+1
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!