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
trasher [3.6K]
3 years ago
12

Which expression defines the given series for seven terms? 8 + 13 + 18 + . . .

Mathematics
1 answer:
almond37 [142]3 years ago
7 0

The given question is 8+13+18+...... which is in arithmetic progression . And for arithmetic series, we have to use the following formula for nth term .

a_{n} = a + (n-1)d

Here a =8 , d=5

So we get

a_{n} = 8+(n-1)5 = 5n +3

And the required expression for n=7 is

\sum_{n=1}^{7}(5n+3)

You might be interested in
12xy-44y+5 determine if it is prime or factorable
Elza [17]

PrimeAnswer:

Step-by-step explanation:

8 0
3 years ago
Lines k and l are parallel. When lines k and l are cut by the transversals below, an isosceles triangle is formed.
Slav-nsk [51]
The angle to the left of angle 1 is 70, so angle 1 is equal to 180 - 70 - 70 which is 40,
5 0
3 years ago
Read 2 more answers
Can I get some help Please?
MAXImum [283]

Answer:

Yes

Step-by-step explanation:

So quadratic formulas help

4 0
3 years ago
Find the area of the figure.
babunello [35]
120?

i haven’t done this in a while so sorry if i got that wrong
5 0
3 years ago
Read 2 more answers
What is the initial value of the equation y-3=-7x ?
Ludmilka [50]

The value is 21 Because three represents those to variables which both equal to 21.

6 0
3 years ago
Read 2 more answers
Other questions:
  • Of all the species in the world, 4 out of every 5 are insects. What percentage of species are insects?
    13·1 answer
  • Which of the following is an example of the law of detachment? A. If an animal is a sparrow, then it flies. If an animal flies,
    8·2 answers
  • Rose's recipe for snack mix is shown. The recipe serves 12 people but Rose wants to make enough for 30 people?
    14·2 answers
  • -6=-8+<br><img src="https://tex.z-dn.net/?f=%20%5Cfrac%7Bp%7D%7B11%7D%20" id="TexFormula1" title=" \frac{p}{11} " alt=" \frac{p}
    13·1 answer
  • Giving out brainlyist please help me out
    10·1 answer
  • What does the absolute value of the y coordinate tell you?
    8·1 answer
  • URGENT!! YOU WILL GET BRAINLIEST!
    6·1 answer
  • Find the area of the following shape. Please show your work.
    13·1 answer
  • John, Maya, and Zara have been picked to compete in the national track and field championships on behalf of their school. They c
    6·1 answer
  • Hey im having trouble understanding 40 divided by 8? could you help me out haha
    9·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!