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
Liono4ka [1.6K]
3 years ago
15

What is sn for the arithmetic series with a1=3 an=-38 and n=8?

Mathematics
1 answer:
otez555 [7]3 years ago
4 0
Sn = n/2 (a1+an)
= 8/2 (3-38)
= 4 (-35)
= -140
You might be interested in
Explain why you must simplify 3 to the second power first
xz_007 [3.2K]
Because you have to go in the order of PEMDAS, parenthesis, exponents, multiplication, division, addition, and subtraction. From what you are saying, 'why you must simplify 3 to the second power first' it seems that you have no parenthesis, so you move onto what is next, which is exponents, in this case, 3 to the power of two.
5 0
3 years ago
A cake shop can make 240 boxes of cakes for 8 days. How many cakes can the shop make in 12 days?​
denpristay [2]

Answer:

<h2>360 cakes</h2>

Step-by-step explanation:

<h2>soln:</h2><h2>onecake =240\8=30</h2><h2>then 12 cakes =30×12=360</h2>

6 0
2 years ago
Read 2 more answers
Does anyone know whoever answers i’ll mark brainlist
-Dominant- [34]

Answer:

(1,2)

Step-by-step explanation:

The solution to the system is where the two lines cross.

They cross at x=1 and y=2

(1,2)

8 0
3 years ago
Math be hard- Can ya help?
horrorfan [7]

Answer:

1/8

Step-by-step explanation:

The slope equation for this problem is

y2-y1

--------

x2-x1

So the y2=4, y1=3, x2=8, and x1=0

4-3      =1

-----       --

8-0     =8

Which is 1/8

7 0
2 years ago
Read 2 more answers
This is old work i forget how to do it
dexar [7]

Answer:

1.101, 1.001, and 0.113

Step-by-step explanation:

the first on is the highest

plz leave a like and brainlest!! i need 10 to ask a quistion!!!

5 0
3 years ago
Read 2 more answers
Other questions:
  • Find the area of the irregular figure in the diagram.
    13·2 answers
  • Yo what’s good brah <br> ✌
    13·2 answers
  • Each of the 50 students participating in a workshop is either an undergraduate or a graduate student. If P is the probability th
    6·1 answer
  • Simplify this power raised to a power: (54^4)^4
    9·1 answer
  • The Coffee Counter charges ​$8 per pound for Kenyan French Roast coffee and ​$7 per pound for Sumatran coffee.
    15·1 answer
  • What is the length of AB?
    10·2 answers
  • Carlos is five years older than twice his sister's age. Carlos is 13. Which equation and solution correctly identifies his siste
    12·1 answer
  • Rewrite this equation in Slope Intercept form and
    11·2 answers
  • State the type of angles and solve for the given variable,
    11·1 answer
  • Please help asap.............................
    5·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!