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
erica [24]
4 years ago
5

Find the first fourth and eighth terms of the sequence a(n)=-2*5^n-1

Mathematics
1 answer:
agasfer [191]4 years ago
6 0
A(1)=2*5^1-1=2*5^0=2*1=2
a(4)=2*5^4-1=2*5^3=2*125=250 
a(8)=2*5^8-1=2*5^7=2*78,125=156,250
You might be interested in
PLEASE HELP ME WITH THIS
Nastasia [14]
Answer: figure 1). x = 36 2). x = 123

Explanation:
Figure 1:
Angle x = angle 1

And angle 4 = 4x

Angle 4 + angle 1 = 180
4x + x = 180
5x = 180
x = 36

Figure 2:
Angle 1 = 68 degree
Angle 2 = 55 degree

Find angle 3:
180 - (68 + 55)
= 180 - 123
= 57 degree

But angle 3 = angle 4 = 57 degree

But: angle 4 + x = 180
57 + x = 180
x = 180 - 57
x = 123

4 0
4 years ago
Read 2 more answers
Factor completely 16x4 − 81.
andrew11 [14]

Answer:

-17

Step-by-step explanation:

Factor the polynomial.

<em>-17</em>

6 0
3 years ago
Read 2 more answers
Each side length of a triangle is 4 cm. What type of triangle is it?
Alecsey [184]
Answer:

equilateral

Explanation:

each side of the triangle had the same length, which means each side is equal.
4 0
3 years ago
Read 2 more answers
Solve using touch points 801+178=
Ierofanga [76]

Answer:

Step-by-step explanation:

979

5 0
3 years ago
Select the correct answer. Function f is an exponential function that has an initial value of 64 and decreases by 50% as x incre
lozanna [386]

9514 1404 393

Answer:

  D. Both functions are decreasing at the same average rate on that interval

Step-by-step explanation:

The dashed lines on the attached graph of the two functions (f in red, g in purple) represent the average rate of change of each function on the interval. The lines are parallel, because the average rate of change is the same for each of the functions on that interval.

__

Function f decreases by 60 units from f(0) = 64 to f(4) = 4 on the interval x = [0, 4]. Function g decreases by 60 units from g(0) = 75 to g(4) = 15 on the same interval. The average rate of change is the amount of decrease divided by the interval width. Those values are the same for both functions.

3 0
3 years ago
Read 2 more answers
Other questions:
  • A certain tree can grow 0.45 meters in one year at that rate how much can the tree grow in 3 years
    13·1 answer
  • 1/2 (4r+6) what dose (4r+6) mean
    8·1 answer
  • Point Y is the circumcenter of triangle DEF
    15·2 answers
  • Does anyone know the answer <br> 10 points
    12·2 answers
  • The height of a trapezoid can be expressed as x – 4, while the bases can be expressed as x + 4 and x + 9. if the area of the tra
    6·2 answers
  • The length of a rectangle is 16 inches longer than its width. if the perimeter of the rectangle is is 540 inches, what is the le
    15·2 answers
  • I will give brainlist
    11·1 answer
  • 3 B B' A 0 -3 In the image, two circles are centered at A. The circle containing B was dilated to produce the circle containing
    6·1 answer
  • 18<br> Find the value of x in<br> the proportion
    5·2 answers
  • A cab charges a $4 initial fee and then $2.50 per mile. If the cab driver charged you $15.25, how many miles, m, did you travel?
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!