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
likoan [24]
3 years ago
13

Triangular numbers can be represented with equilateral triangles formed by dots. The first five triangular numbers are 1, 3, 6,

10, and 15. Is there a direct variation between a triangular number and its position in the sequence? Explain your reasoning.
Mathematics
2 answers:
lorasvet [3.4K]3 years ago
8 0

direct variation is y = kx  where y  would be the value of the number and x would be its position in the sequence, k is a constant 


so for consecutive values y/x would be a constant k 

In this case its not true becuse for example  3/1 = 3 and 6/3 = 2 


so there is no direct variation here.



Ugo [173]3 years ago
5 0
<span>A direct variation means proportionality. Triangular numbers are quadratic in n. T(n)=n(n+1)/2. So no.</span>
You might be interested in
Are all equilateral triangles similar? Justify your answer.
Juli2301 [7.4K]
Yes all equilateral triangles are congruent. You can prove congruence with two congruent angles and all equilateral triangles will have 60º angles. Which is enough to prove similarity
8 0
3 years ago
4 log x = 4<br><br> What’s The Answer To This ?
Zolol [24]

Answer:

8

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
Abel and Cedric will share a total of $180. Abel will receive half as much as Cedric. What amount. in dollars, will Cedric recei
babymother [125]

Answer:

Abel receives $60, and Cedric receives $120

Step-by-step explanation:

Let Abel's share = A

Let Cedric's share = C

we are given the following

A + C = 180  - - - - - (1)   (Abel and Cedric will share a total of $180)

A = \frac{C}{2}\ - - - - - - - (2) (Abel will receive half as much as Cedric. )

from equation 2:

A = \frac{C}{2}\\ C = 2A\ - - - - - - (3)

putting this value of C in eqn (3) into eqn (1)

A + (2A) = 180

3A = 180

∴ A = 180 ÷ 3 = 60

to find C, let us replace the value of A in eqn (3) with 60

C = 2A - - - - (3)

C = 2 × 60

C = 120

Therefore, Abel receives $60, and Cedric receives $120

5 0
3 years ago
How many different ways can the line above be named? What are those names?
suter [353]
Its either 3 or 2 
the third way matches only if there's another reference  line 
I'll go with 3


7 0
3 years ago
Read 2 more answers
Help Plzz<br>Which section of the function is increasing? <br>ОА <br>ОВ <br>ОС <br>OD​
Rama09 [41]

Answer: A

Step-by-step explanation:

because i nsaid sooooo

3 0
2 years ago
Other questions:
  • What is the mode of the following set of data?
    13·1 answer
  • Please help. Not sure how to do this one
    11·1 answer
  • Draw two possible rectangles for each perimeter. Find the area 20 units
    11·1 answer
  • Which statement is true about the mean and median of the numbers of red cubes in the bags?
    7·1 answer
  • 27 less than twice a number is negative 1
    5·1 answer
  • Determine the approximate measure of angle Y.​
    13·1 answer
  • £1 can be exchanged for €1.25. How many pounds will I get if I exchange €100?
    7·2 answers
  • Please answer what type of graph they are too.
    6·1 answer
  • Find the area of the complex figure
    8·1 answer
  • Unit rate for typing 34 words in a minute in a half
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!