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
harkovskaia [24]
3 years ago
8

Find the sum of the arithmetic series given ai = 45, an = 85, and n = 5.

Mathematics
1 answer:
seraphim [82]3 years ago
5 0

Answer:

C. 325.

Step-by-step explanation:

The last term a5 = 85

a1 = 45

Sum of n terms = n/2 (a1 + l)

So here we have n = 5, a1 = 45 and the last term l = 85

= (5/2)(45 + 85)

= 5/2 * 130

= 325.

You might be interested in
Eqyivalent expresion to 3√m^2n^5
Irina18 [472]
The first step to solving this expression is to factor out the perfect cube
\sqrt[3]{m^{2}  n^{3} X n^{2}   }
The root of a product is equal to the product of the roots of each factor. This will make the expression look like the following:
\sqrt[3]{ n^{3} } \sqrt[3]{ m^{2} n^{2}  }
Finally,, reduce the index of the radical and exponent with 3
n\sqrt[3]{ m^{2} n^{2}  }
This means that the correct answer to your question is n\sqrt[3]{ m^{2} n^{2} } .
Let me know if you have any further questions
:)
8 0
3 years ago
Zoe is a chemistry teacher earning a salary of $38,000 per year. She also tutors part-time, charging $20 per session. Which of t
rjkz [21]
Earned Income because she is working full time, but also adds the extra 20$ for when she tutors in her free time<span />
8 0
3 years ago
Read 2 more answers
A dvd that originaly cost 30 dollars is on sale for 10 percent off. find the amount of the discount.
Dennis_Churaev [7]
The discounted price would be $27
8 0
3 years ago
Write the other side of this equation so that the equation is true for NO values of u
Lunna [17]

Answer: 6(u-2)+2= 6u+13

7 0
3 years ago
(-5f+8)4 use disributive property
GREYUIT [131]

Answer:

-20f+32

Step-by-step explanation:

-5×4=-20 put the x back

4×8=32

3 0
3 years ago
Read 2 more answers
Other questions:
  • How do I graph x squared + (y+4) squared = 9
    12·1 answer
  • What is 15200000000 in scientific notation
    12·1 answer
  • Please I need help the answer please
    10·2 answers
  • −p(51+z)=dz+84 solve for z
    12·2 answers
  • i have posted this like 5 times so plz don't just pass it up. i need real help and i need it soon. i need help with Linear Equat
    5·2 answers
  • HURRY PLEASE
    15·2 answers
  • Find sin P, cos P, tan P?<br> Hypotenuse: 41 <br> Adjacent: 9 <br> Opposite: 40
    13·1 answer
  • four family members are going on an airplane trip together. they are parking a car at the airport terminal. the daily rate for p
    8·2 answers
  • The product of a number n and 2 is 2. 50 POINTS
    12·1 answer
  • I’m need the solution ASAP
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!