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
Anika [276]
3 years ago
6

How do i find a formula for "1+3+5+7+......+(2n-1)

Mathematics
1 answer:
nata0808 [166]3 years ago
7 0

Answer:

Step-by-step explanation:

common difference d=3-1=2

first term a=1

an=a+(n-1)d

2n-1=1+(l-1)2

2n-1=1+2l-2

2n-1=2l-1

l=n

(i used l for number of terms)

number of terms=n

S_{n}=\frac{n}{2} (first ~term+last~term)\\=\frac{n}{2} (1+2n-1)\\=n^2

You might be interested in
Daniel, Clarence, and Matthew split a $20.20 dinner bill so that Daniel pays half of what
Bingel [31]

Answer:

8.80$

Step-by-step explanation:

Total 20.20. 6.06 x 2=12.12. 20.20-12.12=8.80$

Mathew paid 8.80$

Clarence paid 12.12$

Daniel paid 6.06$

7 0
3 years ago
Need help ASAP please and thank you
denpristay [2]
The answer is 4, because of you count the number of Doty’s on the 6 and up, you would count 4 dots!
3 0
3 years ago
Read 2 more answers
Find all the zeros of the polynomial function. f(x)=x^4+62^2+128x+65 I want to find the zeros of the polynomial function
IgorC [24]
Snsnnsnsndndpjsjdjsndnndd
5 0
3 years ago
Evaluate 27x1/3^3<br> I need it in simple form
ruslelena [56]

Step-by-step explanation:

27 \times  \frac{1}{ {3}^{3} }

= 27 \times  \frac{1}{27}

= 1

7 0
2 years ago
Read 2 more answers
Ruth decides to test the method of proportions and similar
olga nikolaevna [1]

Answer:

B.

Step-by-step explanation:

7 0
3 years ago
Other questions:
  • What is the volume of a box that is 16 by 14?​
    13·1 answer
  • Help me on number two plz.
    12·1 answer
  • Roger has 2 1/2 cups of butter. A recipe for a loaf of bread requires 3/4 cups of butter. How many loaves can Roger bake?
    11·2 answers
  • Shane thought of a number. She adds 0.5 to that number and then multiplies the new result by 4. She then subtracts 2 and divides
    9·1 answer
  • Solve. -13-8a-4a=-3
    6·2 answers
  • Dorian bought his dog 7.5 pounds of dog food in a week. He feeds his cat 3.75 pounds of food in a week. How many total pounds of
    15·1 answer
  • Given RS=TU<br> prove RT=SU
    15·1 answer
  • A pizza company uses equation C = 15n to calculate the cost of buying a number of pizzas. What is the constant of proportionalit
    14·2 answers
  • A sofa is on sale for 20% off. The original price is $799. What is the sale price?
    5·1 answer
  • Mark the absolute maximum point of the graph
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!