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
user100 [1]
3 years ago
11

The sum of the first natural number and 0 is 1, the sum of the first two natural numbers and 0 is 3, the sum of the first three

natural numbers and 0 is 6, and the sum of the first four natural numbers and 0 is 10. Which explicit formula generates the sum of the first n natural numbers and 0?

Mathematics
2 answers:
liubo4ka [24]3 years ago
5 0

Answer:

anwer is A on edge

Step-by-step explanation:

did the test

Karolina [17]3 years ago
3 0
The sequence 1, 3, 6, 10, 15, etc  find dy/dx...

dy/dx=2,3,4,5  this is not a constant so find d2y/dx2

d2y/dx2=1,1,1,  this is a constant, specifically a constant acceleration, which is a property of a quadratic function of the form ax^2+bx+c  and if we use three points of the sequence we can solve for all of the variables...

9a+3b+c=6
4a+2b+c=3
a+b+c=1   getting differences

5a+b=3
3a+b=2  and again

2a=1, so a=1/2, making 3a+b=2 become:

1.5+b=2, so b=1/2, making a+b+c=1 become

1/2+1/2+c=1 so c=0 so our function is:

a(n)=(n^2+n)/2

which can be expressed, if you factor the numerator as:

a(n)=n(n-1)/2
You might be interested in
How do I do question 9 b?
Lynna [10]
You find the circumference of a full circle so 2πr =43.98
then divide by 4=10.995
so the answer is 10.995cm
3 0
3 years ago
9(5x + 1) ÷ 3y From the expression above, provide an example of each of the following: sum, term, product, factor, quotient, and
tatuchka [14]
5+1=6x9=54/3=18 use pemdas to solve it
8 0
2 years ago
Draw the model to show 5.5/5
babunello [35]
This would be easy if you made more sense out of the question.
4 0
3 years ago
Kevin needs to run 320 meters a day for his training program. He plans on running around the high school track shown. If he runs
Degger [83]

Answer:

No, he will still need to run 50 more meters. (A)

Step-by-step explanation:

7 0
2 years ago
Read 2 more answers
Equivalent ratio tables​
RoseWind [281]

Answer:

11, 44, 24

Step-by-step explanation:

On the right side column you are adding 11 every time you add 4 on the left side column

For example :

4:11

8:22

12:33

16:44

20:55

24:66

Hope this helps!!! :)))

4 0
3 years ago
Other questions:
  • Abby wants to enclose a rectangular area of 20 square feet to use as a garden. Write a function that could be used to find the g
    13·1 answer
  • (b) probability extension: jerry did only 6 problems of one assignment. what is the probability that the problems he did compris
    12·1 answer
  • Renaldo catches the bus at 4:00 pm to ride 3.2 miles from his house to the dentists office. he arrives at 4:30 pm, for a one hou
    6·1 answer
  • Does anyone know number 25 I’m stuck on that
    6·1 answer
  • Find elapsed time between 7:10 am to 8:15am two way
    12·2 answers
  • Help pls! 10 points!
    11·2 answers
  • What is the slop of the line represented by the equation y=-2/3-5x​
    9·1 answer
  • Suppose B is a proper subset of C,
    14·1 answer
  • I'll give brainliest
    7·1 answer
  • Use equivlant ratios 7/= 21/27
    7·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!