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
mafiozo [28]
3 years ago
15

Please help! 10 ∑ 2i-9 i=3

Mathematics
1 answer:
pentagon [3]3 years ago
6 0

\sum\limits_{i=3}^{10}(2i-9)=2(3)-9+2(4)-9+2(5)-9+2(6)-9+2(7)-9\\\\+2(8)-9+2(9)-9+2(10)-9\\\\=6-9+8-9+10-9+12-9+14-9+16-9+18-9+20-9\\\\=90-72=18

You might be interested in
CAN SOMEBODY PLEASE HELP? I WILL GIVE BRAINLIEST!!
IceJOKER [234]

Answer:0

Step-by-step explanation:2≠8,10 so we use the bottom formula. We get 4 - 6 + 2=0

7 0
2 years ago
At West painting, they get about three calls a day asking for an estimate of the cost for having the interior of a house painted
Veseljchak [2.6K]

Answer:

1 7/8

Step-by-step explanation:


7 0
3 years ago
Read 2 more answers
Translate the algebraic expression shown below into a verbal expression.
yaroslaw [1]
The quotient of some number and four.
6 0
3 years ago
The diagram shows a trapezium.<br>Work out the area of the trapezium.<br>​
pantera1 [17]

Answer:

32cm^2

Step-by-step explanation:

the formula for the area of a trapezois is S=(10+6)/2*4=32

5 0
3 years ago
You roll a dice twice.<br> Find the probability of getting 3 in first throw and 5 in second throw.
Debora [2.8K]

Answer:

1/6

Step-by-step explanation:

there are 6 faces on a dice so there's a 1 in 6 chance that you would roll a 3 on your second go there is still only a 1 out of 6 chance of getting a 5 because there is still 6 numbers you could roll on.

hope this helped

8 0
2 years ago
Other questions:
  • Please help me so god will bless you
    12·2 answers
  • 2.8 = 2y<br> What does y equal?<br> 1.4<br> 0.5<br> 2.8<br> 0.6
    15·2 answers
  • Need help with 3 and 4
    14·2 answers
  • -1(x+5)=3[x+(2x-1)]<br> solved and justified each step
    8·1 answer
  • 7 is subtracted from 7 times a number
    11·2 answers
  • Help ASAP<br><br> A)360<br><br> B)50<br><br> C)140
    10·2 answers
  • The perimeter of a flower garden with three sides is 46 feet. One side of the garden is 11 feet long. Another side of the garden
    6·1 answer
  • The number of typos made by a student follows Poisson distribution with the rate of 1.5 typos per page. Assume that the numbers
    12·1 answer
  • Factorise the expression 8ab + 7ac
    10·2 answers
  • PLease answer correctly
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!