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
aleksandr82 [10.1K]
3 years ago
12

Add first 15 natural numbers and find the average? Solution with formula?

Mathematics
2 answers:
NeTakaya3 years ago
7 0

Good morning ☕️

Answer:

<h2>8</h2>

Step-by-step explanation:

<em><u>the formula :</u></em><em> (sum of 15 consecutive term of an arithmetic sequence)</em>

1+2+3+...+15=\frac{15*(15+1)}{2} =\frac{15*16}{2}=15*8\\

<u><em>Now,</em></u>

Average=\frac{15*8}{15} =8

kicyunya [14]3 years ago
5 0

Answer:

120

Step-by-step explanation:

You might be interested in
HELP ! How do I graph y ≤1−3x
Zanzabum

Answer:

Step-by-step explanation:

\Select two x x values, and plug them into the equation to find the corresponding y y values.

8 0
2 years ago
1. Add or subtract. Show your work for each problem.
Aleks04 [339]
Hi there!

a. 8x^2 - 1
(x^2 - 4x + 5) + (7x^2 + 4x - 6)
= x^2 + 7x^2 - 4x + 4x - 1
= 8x^2 - 1

b. 5x^2 + 7x - 7
(7x^2 + 4x - 6) - (2x^2 - 3x + 1)
= 7x^2 + 4x - 6 - 2x^2 + 3x - 1
= 7x^2 - 2x^2 + 4x + 3x - 6 - 1
= 5x^2 + 7x -7

Hope this helps!
4 0
3 years ago
A . What is the slope in the line of the graph ?
vampirchik [111]

Answer:

0.2x+3

Step-by-step explanation:

5 0
3 years ago
What is the 4th term of the geometric sequence with a=5 and ratio=3
denis23 [38]
The 4th term is 135 
                                                            n-1
 you get it by using the formula Tn= ar                                                <span />
8 0
3 years ago
Oliver read for 450450450 minutes this month. His goal is to read for 10\, percent more minutes next month. If Oliver meets his
dybincka [34]

Step-by-step explanation:

450450450=100%

? =110%

110×450450450/100

495495495 mins=2nd month

add

495495495+450450450=

945945945 minutes

7 0
3 years ago
Other questions:
  • HEEEEEEEEEEEEEEEEELP
    12·1 answer
  • Find the value of the greater root of x^2-6x+5=0
    6·1 answer
  • Use the formula SA=6s2 , where SA is the surface area and s is the edge length of the cube, to solve this problem. Eliz must cov
    5·1 answer
  • The differential equation xy' = y(in x – Iny) is neither separable, nor linear. By making the substitution y(x) = xv(x), show th
    11·1 answer
  • Simplify the expression 5(z+6)=
    7·2 answers
  • Write a polynomial of least degree with rational coefficients and with the root -19-5 square root 2.
    13·1 answer
  • (a) 0.6+0.66 +0.666 +.... n terms​
    10·1 answer
  • HELP ME PLS!!!!!
    14·1 answer
  • Write the equation <br> it is parallel to the graph of y=-2x-10 and passes through (-1,2)
    9·1 answer
  • What is the perimeter of a square who’s sides are ten units long?
    8·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!