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
Ipatiy [6.2K]
3 years ago
15

Find the ninth partial sum of infinite sumnation 3i-4

Mathematics
1 answer:
snow_tiger [21]3 years ago
3 0
\bf \sum\limits_{i=1}^9\ 3i-4\implies \sum\limits_{i=1}^9\ 3i-\sum\limits_{i=1}^9\ 4\implies 3\sum\limits_{i=1}^9\ i-\sum\limits_{i=1}^9\ 4
\\\\\\
3\cdot  \cfrac{9(9+1)}{2}-(9\cdot 4)

and surely you know how much that is.
You might be interested in
ANSWER QUICKLY PLEASE AND THANK YOU!!!
nydimaria [60]

Answer:

2,3

Step-by-step explanation:

6 0
2 years ago
Read 2 more answers
The total weight of 30 bags of flour and 4 bags of sugar is 42.6 kg. If each bag of sugar weighs 0.75 kg, what is the weight of
alina1380 [7]
The answer is: Each bag of flour weighs 1,32 kg. 

If we the total weight of the bags is given, and we know both the number of bags of flour and sugar, and we also know the weight of each bag of sugar, then we have to find the unknown, which is X. 30 times X plus 4 times the weight of a bag of sugar would equal 42.6kg. Next step is to put the unknown on one side and the known values on the other side. We have 30 times X equals 42.6 minus 4 times 0.75. 
To find X we need to divide the value with 30, or to sum up 

30X + 4*0.75 = 42.6
30X + 3 = 42.6
X = (42.6 - 3) / 30
X = 1.32 kg
7 0
3 years ago
Read 2 more answers
4f2 + 3h - g+f
Bas_tet [7]

Answer:

can't be simplified or you can add you get the answer

4 0
2 years ago
How do you solve this?
Hatshy [7]

Answer:

y = -3/2x + 5/2

Step-by-step explanation:

Point: (5, -5)

Parallel to: y = -3/2x + 2

Slope= -3/2 (parallel lines have the same slope)

y-intercept = -5 - (-3/2)(5) (y - slope times x) =

-5 + 15/2 = 5/2

8 0
3 years ago
PLEASE HELP!!! ILL MARK BRAINLIEST
KiRa [710]

Answer:

Beatz on demand

Step-by-step explanation:

Even though it starts at 25 for the fee it has a lower monthly rate cost then itunes. While iTunes charges 8.99 per month Beatz on demand only charges 5.99 a month

8 0
3 years ago
Read 2 more answers
Other questions:
  • A cube has six sides that are numbered 1 to 6
    11·1 answer
  • <img src="https://tex.z-dn.net/?f=144%20%5Ctimes%20%20%7B144%7D%5E%7B2%7D%20" id="TexFormula1" title="144 \times {144}^{2} " al
    14·1 answer
  • Scientific notation is
    10·2 answers
  • What does eight added to x look like
    13·1 answer
  • Clark wants to figure how many pens to order for the office. There are 48 workers, and he needs to order one pen for each worker
    10·1 answer
  • Evaluate c - 2 when c = 7.<br> Stuck? Watch a video or use a hint.<br> What is my final answer
    6·1 answer
  • I need the second answer!?!?​
    14·1 answer
  • 2. A physical fitness researcher devises a test of strength and finds that the results are normally distributed with a mean of 1
    15·1 answer
  • Help I have no idea what I'm doing
    5·1 answer
  • Week 12<br> Please answer with clear instructions so that i can apply this to other questions
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!