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
Artyom0805 [142]
3 years ago
8

A sequence of numbers is given by the formula an= 2(-1.2)^n, where n is a positive integer. What is the probability that a rando

mly chosen term from the first 3 terms will be negative?
A. 1/3

b. 1/2 C. 2/3 D. 0
Mathematics
1 answer:
vladimir2022 [97]3 years ago
5 0

Answer:

2 / 3

Step-by-step explanation:

Given the formula :

an= 2(-1.2)^n

At n = 1

a(1) = 2(-1.2)^1 = 2(-1.2) = - 2.4

At n = 2

a(2) = 2(-1.2)^2 = 2(-1.2)^2 ; 2 * 1.44 = 2.88

At n = 3

a(3) = 2(-1.2)^3 = 2(−1.728) ; 2 * - 1.728 = - 3.456

Number of negative numbers from first three term = 2

P(choosing a negative term) =

Number of negative numbers from first three term / total number of terms

= 2/3

You might be interested in
Solve inequalities.
grigory [225]

Answer:

10. 7n - 1 < -8

Isolate the variable, n. Do the opposite of PEMDAS. Treat the < as equal sign, what you do to one side, you do to the other. First, add 1 to both sides:

7n - 1 (+1) < - 8 (+1)

7n < - 8 + 1

7n < - 7

Isolate the variable, n. Divide 7 from both sides:

(7n)/7 < (-7)/7

n < -7/7

n < -1

n < -1 is your answer.

11. 3 > -7v + 4v

Combine like terms, then isolate the variable, v. First, add -7v and 4v together.

3 > (-7v + 4v)

3 > (4v - 7v)

3 > (-3v)

Isolate the variable, v. Divide -3 from both sides. Note that since you are dividing a negative number, you must flip the sign:

(3)/-3 > (-3v)/-3

3/-3 > v

-1 < v

v > -1 is your answer.

~

4 0
3 years ago
What is the area of the triangle?
Alika [10]

Answer:

15 I think

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
What is the slope of the line with points (-2,0) and (8,0)
Natali5045456 [20]
The answer is 10 because when you use the slope formula y^2 - y^1 divided by x^2 - x^1 and plug your points in you get 10/0 which makes the answer ten
5 0
3 years ago
A type of Conic where the plane is tilted and intersects only on one cone to form a bounded curve.
olga_2 [115]

Answer:

Ellipse when the (tilted) plane intersects only one cone to form a bounded curve.

Step-by-step explanation:

hope it will help :)

8 0
3 years ago
Johnny answered 40 questions correctly on his 60 question test. What percent of questions did Johnny answer correctly?
Rzqust [24]

Answer:

66.6%

Step-by-step explanation:

40/60=4/6=2/3

2/3=66.6

4 0
3 years ago
Read 2 more answers
Other questions:
  • Polygon Y is a scaled copy of Polygon X using a scale factor of \dfrac13 3 1 ​ start fraction, 1, divided by, 3, end fraction. P
    15·1 answer
  • Chen's report will take 8 1/3 hours to complete. He has worked 3/5 of that time doing research. How long has he worked?
    11·2 answers
  • I need help please!!!
    12·1 answer
  • The diameter of a circle with endpoints A(-1,5) and B(4,-3) Use the midpoint formula to find the coordinates of the center of ci
    5·1 answer
  • Please need help please
    10·1 answer
  • Elise pays $21.75 for 5 students tickets to the fair. WHat is the cost of each students tickets
    7·2 answers
  • (08.04)The following data show the scores of some students in a competition:
    10·2 answers
  • Find the gradient of the line segment between the points (-2,3) and (0,2).
    13·1 answer
  • Kelsey had 8 entries in her science journal. Last week, she wrote x more entries. How many entries are in her science journal no
    5·1 answer
  • Find the length of side A
    8·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!