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
tensa zangetsu [6.8K]
4 years ago
8

I NEED HELP PLEASE THANKS! :) Find the seventh partial sum of 13, 22, 31, 40, ...

Mathematics
2 answers:
Harrizon [31]4 years ago
7 0

Answer:

Step-by-step explanation:

Arithmetic sequence

First term a = 13

Common difference = 2nd term - first term

                                 = 22 - 13

                             d = 9

a_{n}= a + (n-1)d\\\\a_{7}= 13 + 6*9

   = 13 + 54

  = 67

Sum of 7 terms = \frac{n}{2}(2a + (n-1)d)\\\\

                         = \frac{7}{2}(2*13+6*9)\\

                         =\frac{7}{2}(26+54)\\

                          = \frac{7}{2}*80\\

                         = 7 *40

                          = 280

Olin [163]4 years ago
5 0

Answer:

280

Step-by-step explanation:

the 7th number is

You might be interested in
Samuel has a collection of toy cars. His favorites are the 27 red ones which make up 60% percent of his collection. How many toy
olchik [2.2K]
27/60 = 0.45
0.45 * 100 = 45

Samuel has 45 toy cars
8 0
3 years ago
Cheat with me on a test again ;)))
UNO [17]

Answer:

WHY

Step-by-step explanation:

thats sus

4 0
3 years ago
Read 2 more answers
What are the next three terms of the geometric sequence 4, 24, 144, . . . ?
Agata [3.3K]
4x6=24x12=144x18=2592x24=62208x30=1,866,240
7 0
3 years ago
Read 2 more answers
Help me please first and correct answer gets brainly.est
adelina 88 [10]
0.2, 0.3, 0.4, 0.5 if 0 doesnt count then exclude 0.2. 
-0.2 + 0.2 = 0
-0.2 + 0.3 = 0.1
-0.2 + 0.4 = 0.2
-0.2 + 0.5 = 0.3

4 0
3 years ago
F(x) = x2 − 8x + 15 g(x) = x − 3 h(x) = f(x) ÷g(x) The domain of h(x) is
Sphinxa [80]

Answer:

{x | x ≠ 3}

Step-by-step explanation:

f(x) / g(x) = x^2 - 8x + 15 / (x - 3)

= (x - 5)(x - 3) / (x - 3) = h (x)

The domain is {x | x ≠ 3)

(because h(x) has no value when x = 3:-the denominator  x-3 becomes zero when x = 3)


8 0
4 years ago
Other questions:
  • A mathematical formula designed to predict population fluctuations in a community could be called a(an)
    9·1 answer
  • D.2<br> Geometry math question no Guessing
    9·1 answer
  • PLZ HELP FAST WILL GIVE BRAINLIEST!!!
    6·1 answer
  • The lengths of the sides of a triangle are represented by 3m, 3m and 3m.
    13·1 answer
  • Which statements are true? Check all that apply.
    5·2 answers
  • Given and prove <br> Statement and reason
    14·1 answer
  • A small pet shop only has hamsters and gerbils left to sell. The ratio of hamsters to gerbils in the shop is 2:9 . The ratio of
    10·1 answer
  • Jenny 112 have a possible 148 points on a test she lost four points for each incorrect answer how many incurred answers does she
    6·2 answers
  • Blaine is on vacation in New York City and wants to collect magnets of places he visits to give to all his friends. The Times Sq
    15·1 answer
  • Figure ABCD is transformed to figure A prime B prime C prime D prime, as shown: A coordinate grid is shown from negative 5 to 0
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!