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
musickatia [10]
3 years ago
14

1.2,3,7.5,18.75 which formula can used to describe the sequence?

Mathematics
1 answer:
n200080 [17]3 years ago
8 0

Answer:

a_n=1.2 \cdot 2.5^{n-1}

Step-by-step explanation:

The first step is to realize that this is a geometric sequence, where each next term in the sequence is 2.5 times larger than the previous. You can confirm this by the fact that 3=1.2*2.5, 7.5=3*2.5, and 18.75=7.5*2.5. Now, you can write the formula, where n is where the number is in the sequence, and a is the number itself. Since 1.2 is the first term in the sequence and the rate of expansion is 2.5, the formula is:

a_n=1.2 \cdot 2.5^{n-1}

Hope this helps!

You might be interested in
Find the 86th term of the arithmetic sequence 18, 21, 24,
pentagon [3]

Answer: 258

Step-by-step explanation:

86 times 3=258

7 0
2 years ago
How to solve (8x-3)(5x+4)=0
agasfer [191]

Answer:

x= 3/8 = 0.375 , x= -4/5= -0.8

Step-by-step explanation:

8x-3=0

8x=3

8x/8 = 3/8

x= 3/8 converted to decimal will be =0.375

for 5x+4=0

5x= -4

5x/5 = -4/5

x= -4/5 = converted to decimal will be = -0.8

3 0
2 years ago
Read 2 more answers
A line passes through the points (8, 8) and (4, 0). What is its equation in slope-intercept form?
zloy xaker [14]
Answer: y=2(x)-8

Explanation: (8,8) 8-4 and 8-0
- (4,0)- 4 8
- you take the 8 as the numerator and 4 and the denominator and then divide 8 by 4 to=2 which is your slope
- you pick 1 set of points (I chose (8,8) to finish the problem)
8(y-intercept)= 2(slope) • 8(x-intercept) +b
8= 16+b
-16 -16 (subtract 16 from both sides)
-8 (8-16) =b {b=-8)
-now you put together your equation,
which leaves you with { y=2(x) - 8}
^ ^
your slope your B value
4 0
3 years ago
If the sinA = 3/5 and the cosA = 4/5 , then what is tan A?<br><br> a: 3/4<br> b: 1<br> c: 4/3
AysviL [449]
The answer should be A
4 0
3 years ago
Read 2 more answers
Assume that in the year 2019, 843,000 people attended the Christmas Eve celebration at Walt Disney World
Genrish500 [490]

Answer:

1138050

Step-by-step explanation:

Multiply 843,000 by 0.35 and then add the numbers together.

Please mark brainliest

3 0
3 years ago
Other questions:
  • Which inequality statement is true?
    6·1 answer
  • Rename the number. Use the place value chart to help. 24 ten thousands =
    10·2 answers
  • Plz answer correctly for me<br><br><br> THANK YOU
    9·1 answer
  • Luis makes 3 free throws out of every 7 shots how many free throws will he make if he shoots 21 times
    13·1 answer
  • Employee B got a one time bonus of $90. He makes $13 an hour. If he was paid $415, how
    13·1 answer
  • Mrs. Randall bakes a peach pie. The diameter of the pie is 9 inches. If Mrs. Randall cuts the pie into 6 pieces, what will be th
    6·1 answer
  • Factor the expression d2-8d +16
    10·1 answer
  • A back-to-back stem-and-leaf plot showing the points scored by each player on two different basketball teams is shown below.
    13·1 answer
  • The perimeter of a rectangle Is 108 centimeters. If the length of the rectangle is five times the width, what are the dimensions
    11·1 answer
  • The temperature of a gas decreases 0.045°C every minute for 8 min. What is the change in the temperature of the gas? Use a posit
    6·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!