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
snow_tiger [21]
3 years ago
15

If the 3rd and the 9th term of an ap are 4 and -8 respectively, which term of this a.p is zero?​

Mathematics
1 answer:
Debora [2.8K]3 years ago
5 0

Answer:

The 5th term.

Step-by-step explanation:

a3 = a1 + 2d = 4

a9 = a1 + 8d = -8

Subtracting :

6d = -12

d = -2

So it's the 5th term because:

  a5 = a3 + 2(-2)

= 4 - 2(2) = 0

You might be interested in
Sweet tea purchased a new pair of jeans to wear to the battle of the bands on sale at 40% off he saved $20 what was the regular
DIA [1.3K]
$50 
20 x 2 = 40, which is 80% 
and then 20 divided by 2 is 10; so you add that to 40 and you get your answer 
8 0
3 years ago
Which graph represents a function?
lisabon 2012 [21]

Answer:

the bottom graph in the first photo

Step-by-step explanation:

it is a function, unlike the others, because that graph is the only one where the x values dont repeat. in order for it to be a function, the x values cannot repeat

3 0
3 years ago
How many x intercepts appear on the graph of this polynomial function? f(x)=x^4-5x^2 1 x intercept 2 x intercepts 3 x intercepts
Bumek [7]
You can find the number of x intercepts by setting f(x) equal to zero giving you 0=x^4-5x^2. You can factor out an x^2 and divide on both sides (when you divide 0 by anything it is still zero so the x^2 disappears), and you are left with 0=x^2-5, which you can solve easily giving you x=+/- sqrt(5). However, the original equation also has an x intercept at (0,0) which you can see by plugging 0 in for x. So the grand total of x intercepts is 3!
5 0
3 years ago
Read 2 more answers
Cristiana uses 25,000 to purchase a cd
Ierofanga [76]
Dollars or cents 
what is the question
4 0
3 years ago
Read 2 more answers
6 identical toys weigh 1.8 kg.
Natali [406]

Step-by-step explanation:

a)1.8kg=1.8*1000=1800g

b)6toys=1800

1toy=300g

c)4toys=4*300=1200g=1.2kg

7 0
3 years ago
Other questions:
  • Please help!!!! 25 points!!!
    11·2 answers
  • Factor. 2xy+5x−12y−30
    6·2 answers
  • 5. How many solutions does this system of linear
    7·1 answer
  • Help me solve 10 and 11 Please. And show your work
    9·1 answer
  • If the center of a circle is at (3,-6) and the diameter is 10 units, what is the equation for the circle
    7·1 answer
  • Mr smith owns a bike store and typically marks up the bikes 20% over the price that the bikes cost him. The bikes cost him 69.95
    9·1 answer
  • In an arithmetic sequence, a1=5 and a6=-5. Determine an equation for an, the nth term of this sequence.
    13·1 answer
  • At the rate shown in the table, how many weeks did it take to sell 700 books? [Type your answer as a number.]
    5·2 answers
  • In an orchard, there are 13 apple trees, 25 orange trees, and a cherry tree. What is the ratio of orange trees to cherry trees?​
    9·1 answer
  • The sum of four consecutive integers is at least 18. What's the smallest consecutive integer to make this statement true?
    14·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!