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
Anika [276]
3 years ago
11

How many terms of the arithmetic sequence {-4,-2, 0, ....} will give a sum of 500?

Mathematics
1 answer:
IrinaK [193]3 years ago
3 0

Answer:

a. 25

Step-by-step explanation:

Sₙ = n/2 * (2 * a₁ + (n-1) * d)

Sₙ = 500     a₁ = -4    d = 2

500 = n/2 * (-8 + (n-1) * 2) = n/2 * (-8 + 2n - 2) = n/2 * (2n - 10) = n² -5n

n² - 5n -500 = 0

(n - 25) (n + 20) = 0

n > 0

n = 25

You might be interested in
Find all integers x for which is a prime number. Show all work please!!!!
RSB [31]

Answer:

4x Times the next point will be 11

Step-by-step explanation:

makes most sense mark as brainlst

6 0
3 years ago
Read 2 more answers
Which of the following is a result of the construction of a median of a triangle?
olga2289 [7]

9514 1404 393

Answer:

  A side of the triangle is bisected

Step-by-step explanation:

The median of a triangle connects a vertex to the midpoint of the opposite side. That is, it bisects the side it meets:

  A side of the triangle is bisected

_____

<em>Comment on other choices</em>

A median will be an angle bisector only if the triangle is isosceles. Likewise, it will only be perpendicular to the side if the triangle is isosceles.

There are several points called "center" of a triangle, including the centroid (on the median), the incenter, the circumcenter, and the orthocenter.

5 0
4 years ago
The temperature went from -16°F to 7°F. What was the change in temperature?
Ganezh [65]

Answer:

-9*F

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
4) A certain computer costs $599.00 at Best Buy. On Black Friday, it is on sale for 35% off. What is the price of the computer o
lawyer [7]

Answer:

$389.35

Step-by-step explanation:

A certain computer costs $599.00 at Best Buy. On Black Friday, it is on sale for 35% off.

So, after 35% off the price of the computer will reduce from $599.00.

We are asked to find the cost of the computer on Black Friday.

Therefore, the price of the computer will reduce by [599 \times \frac{35}{100}] = 209.65 Dollars.

And the reduced price on the Black Friday will be $(599 - 209.65) = $389.35 (Answer)

5 0
3 years ago
Please help me answer this pdf
jeyben [28]
I cant see the picture
7 0
3 years ago
Other questions:
  • What are two decimals that can be rounded to 4.26
    14·1 answer
  • 15+0= 15
    12·1 answer
  • Which figure shows how a shape can be rotated about an axis to form a cylinder?
    13·2 answers
  • The table shows the height of several buildings in the chicago use the table to determine whether the height of the building is
    11·1 answer
  • What angles do perpendicular lines form
    9·1 answer
  • Whats the distance between -17 and 12
    13·2 answers
  • Work out 6a + 5a = -11
    12·2 answers
  • Need help please please
    5·2 answers
  • PLEASE HELP<br> NO LINKS!!! <br> Thanks I really appreciate it
    8·2 answers
  • HIII PLEASE HELP ITS 6 GRADE MATHS LOLL
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!