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
Akimi4 [234]
2 years ago
8

What is the explicit formula that represents the geometric sequence -2, 8, -32, 128

Mathematics
1 answer:
lubasha [3.4K]2 years ago
3 0
a_n=a_1r^{n-1}\\\\a_1=-2;\ a_2=8;\ a_3=-32;\ a_4=128\\\\r=a_2:a_1\to r=8:(-2)=-4\\\\\boxed{a_n=-2\cdot(-4)^{n-1}}
You might be interested in
Which situation could be represented by -15?
Agata [3.3K]
Having 15 fewer people go to a concert
3 0
2 years ago
13. Attend to precision. Justify each step in the solution of 5x + 15 = 0 below by stating a property
tigry1 [53]

Answer:

55/7

Step-by-step explanation:

si:|fvdegregregregrerg4grgrfewgreggtrgr343g

8 0
3 years ago
Which of these ordered pairs is the best estimate of the solution of the system y = 3x + 2 and y = -1/4 x + 1?
Lelu [443]
If the solution exists, y=y....

3x+2=-x/4+1  make everything have a common denominator of 4...

(12x+8)/4=(-x+4)/4 now multiply both sides by 4

12x+8=4-x  add x to both sides

13x+8=4  subtract 8 from both sides

13x=-4  divide both sides by 13

x=-4/13

x≈-0.31  and the only pair in your choices having an x value close to that is:

(-0.3, 1.1)
6 0
3 years ago
The parameters of a linear function are the slope and the y-intercept
taurus [48]

Answer:

see the explanation

Step-by-step explanation:

we know that

A linear function in slope intercept form is equal to

f(x)=mx+b

where

m is the slope or unit rate

b is the y-intercept

x is the independent variable or input value

f(x) is the dependent variable or output value

In this problem we have

f(m)=5+3m

where

m is the number of miles

f(m) is the cab company's fare in dollars

we have that

In this context

<em>Slope</em>

The slope or unit rate is equal to the cost per mile for the riders trip

The slope is $3 per mile

<em>Y-intercept</em>

The y-intercept is the cost of the riders trip when the number of miles is equal to zero, also is called the initial value.

The y-intercept is $5

3 0
3 years ago
Use function notation to write the equation of the line
blondinia [14]

f(x)=mx+b\to y=mx+b

We have two points:

(-3,\ 0);\ (-4,\ 7)

The point slope form of the line:

y-y_1=m(x-x_1)\\\\m=\dfrac{y_2-y_1}{x_2-x_1}

Substitute

m=\dfrac{7-0}{-4-(-3)}=\dfrac{7}{-1}=-7

y-0=-7(x-(-3))\\\\y=-7(x+3)\\\\y=-7x-21

Answer:

f(x)=-7x-21

8 0
3 years ago
Other questions:
  • How do you turn 5x + 4y =8 into. Y= mx+ b
    5·2 answers
  • Convert 5 kg into grams
    14·1 answer
  • Max is making a rectangular garden that is 5 feet less than twice it's width. If the perimeter of the garden is 89 feet, what wi
    7·1 answer
  • What is log5(4*7)+log5^2 as a single log?
    12·2 answers
  • Which triangle is a translation of triangle p?
    8·1 answer
  • 48 points hey can you help 1-1+1 :)))) your welcome
    8·1 answer
  • The Corner Store sells 4 bottles of energy drinks for $11.56, Bev's sells 6 bottles for $17.94. Which is the better buy?
    13·2 answers
  •  Can someone pleaseeee help if you’re correct I’ll give u brainlist
    5·1 answer
  • Find the value of x in the figure shown. <br> plz i beg help i will give 20 points and brianlist
    10·2 answers
  • Solve the compound inequality 4x - 7 &gt; 5 or 5x + 4 = -6.
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!