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
Ann [662]
4 years ago
8

What is the 25th term of the arithmetic sequence where a1=8 and a9=48 ? answers to choose from. a)113. b)118. c)123. d)128

Mathematics
2 answers:
Nookie1986 [14]4 years ago
7 0

Answer:

128

Step-by-step explanation:

Stella [2.4K]4 years ago
6 0
First we need to find "d" which is difference between any 2 successive members of the sequence. Because the sequence is arithmetic that means that the difference between any 2 successive members is same and constant.

This is the formula for any member of sequence at position "n"
An = A1 + (n-1)*d
d = (a9 - a1)/(9-1)
d = 5

Now we calculate 25th member:
a25 = a1 + (25-1)*5
a25 = 128

Answer is d)
You might be interested in
What is |3.5| simplified?
erastovalidia [21]
|3.5| = 3.5

Any negative or positive number will always have an absolute value that is positive.

For example, | -3.5| = 3.5

3.5 can also be expressed a fraction.

3.5 * 2/2 = 7/2
8 0
4 years ago
I dont know how to do this.
Aleksandr-060686 [28]
The answer to the question

5 0
3 years ago
When the point (-1,3) is dilated with the center of dilation at the origin, the image of the point is (4,-12). What is the scale
Elina [12.6K]

Answer:

-4

Step-by-step explanation:

When the dilation center is the origin, the dilation factor is the ratio of dilated coordinates to original coordinates: 4/-1 = -12/3 = -4.

7 0
3 years ago
Read 2 more answers
How to solve this equation? Please
Shtirlitz [24]
Solve Let's solve your equation step-by-step.5+3.9x−8.15x25x=0
Step 1: Simplify both sides of the equation.−0.326x2+3.9x+5=0
Step 2: Use quadratic formula with a=-0.326, b=3.9, c=5.x=−b±sqrt(b2−4ac)2ax=−(3.9)±sqrt((3.9)2−4(−0.326)(5))2(−0.326)x=−3.9±sqrt(21.73)−0.652x=−1.1680135096973403,13.131203693746418Answer:<span>x=

−1.1680135096973403,13.131203693746418</span>
7 0
3 years ago
PLZ HELP 20 POINTS!!!!!!!!! WILL GIVE BRAINLIEST!!!!!!!!!!!!! ASAP!!!!!
wolverine [178]
She can drive less than 673 miles. 
5 0
3 years ago
Read 2 more answers
Other questions:
  • PLEASE HELP WITH SIMPLE SCALE FACTOR QUESTION!!:)
    14·2 answers
  • How do I solve this?
    12·1 answer
  • 5х + 34 = -2 (1 - 7x) help me solve it step by step !
    5·1 answer
  • Marshall lives 2300 yards from school and 1500 yards from the pharmacy
    14·1 answer
  • Help, please??
    8·1 answer
  • Whats the answer according to the image ?
    8·1 answer
  • X + 2y = 13 <br> -x + y = 5
    6·1 answer
  • PLEASE i need help it's for a math test and i'm lost
    10·1 answer
  • HELP I NEED HELP ASAP
    10·1 answer
  • What is the answer for <br><br> 2ab(xa^9+ya^3-6)
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!