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
Margarita [4]
3 years ago
13

Please help me thank you

Mathematics
1 answer:
Lunna [17]3 years ago
8 0

Answer:

      418

Sn = ∑ 3 +4(n-1)

     n=1

Step-by-step explanation:

3,7,11,15,.....1671

a1 =3

d = 4  (7-3=4)

an = a1 + d(n-1)

an = 3 +4(n-1)

We need to determine the last term

1671 = 3 +4(n-1)

Subtract 3

1671-3 = 3-3 +4(n-1)

1668 = 4(n-1)

divide by 4

1668/4 = 4(n-1)/4

417 = n-1

Add 1 to each side

418 = n

      418

Sn = ∑ a1 +d(n-1)

     n=1

      418

Sn = ∑ 3 +4(n-1)

     n=1

You might be interested in
At grace’s job,15% of the time she has to answer the phone. Write this percent as a decimal.
kiruha [24]

Answer:

0.15

Step-by-step explanation:

8 0
3 years ago
What is the value for m and n?
Inga [223]

Answer:

M = 8 N = 10

Step-by-step explanation:

Multiplying exponents adds the exponent, meaning that inside of the brackets, it is a^4 * b^5. Multiply the exponents by two because you are squaring the entire equation. Therefore, m=8 and n=10

7 0
2 years ago
Alex has 520 yards of fencing to enclose a rectangular area.
Pavlova-9 [17]
<span>Perimeter =2w+2L= 520.
We can solve this by understanding that the area is maximized by a square
Therefore L=w.

p=2w+2w=520=4w
w=130

Area
 
A=wL=130(130)= 16900 square yards</span>
6 0
3 years ago
Read 2 more answers
What is 0+0=?<br><br>help me or I will fail XD​
mr_godi [17]

Answer:

0+0=0

lololo.............

8 0
2 years ago
Read 2 more answers
Help me plz branniest to whoever is right
nataly862011 [7]

Answer:

-3,8

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
Other questions:
  • using 'n' to represent "a number" write an algebraic equation to represent the statement "19 more than 5 times a number is 244
    12·1 answer
  • Can u delete a question on here?​
    13·2 answers
  • 5874<br> _7<br> ×____<br><br> +______<br> 511038
    14·1 answer
  • What is the domain of the function represented by this graph?
    11·1 answer
  • GUys help me with this one!!<br> is it b?
    8·2 answers
  • Which of the following values of y will result in a true statement when substituted into the given equation? y + 4.2 = 3.4 A. y
    12·2 answers
  • Which of the following is an equivalent simplified expression for 2(4x + 7) – 3(2x – 4) ?
    11·1 answer
  • 4 bags of cement do 18m squared how many metre squared can be done with 7 bags
    15·2 answers
  • May someone please assist me...I keep getting it wrong and it is due in 10 minutes.​
    10·1 answer
  • Jada and Lin are comparing inches and feet. Jada says that the constant of proportionality is 12. Lin says it is 1/12. Do u Agre
    9·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!