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
bearhunter [10]
3 years ago
12

I need help with #8 and #9 Please! :) I will mark as brainliest!

Mathematics
1 answer:
k0ka [10]3 years ago
6 0

Answer:

see explanation

Step-by-step explanation:

(8)

the common ratio r,  of a geometric sequence is

r = \frac{a_{2} }{a_{1} } = \frac{a_{3} }{a_{2} } = ......

r = \frac{\frac{1}{32} }{\frac{1}{256} } = \frac{\frac{1}{4} }{\frac{1}{32} } = 8

(9)

The simplest way to evaluate the sum is to substitute k = 3, 4, 5, 6 into each term and sum them

(- 9 + 20) + (- 12 + 20) + (- 15 + 20) + (- 18 + 20)

= 11 + 8 + 5 + 2 = 26


You might be interested in
I’m confused on this and i just moved from schools so
Elina [12.6K]

Answer:

(-2,3)

Step-by-step explanation:

The point where two lines cross should be your answer!!!

(-2,3) is where the two lines meet/cross!!

That is the definition of a system on a graph!

-Where two lines meet/cross!!

6 0
2 years ago
Need help asap<br> correct answers
Gelneren [198K]

Answer:

line 3

Step-by-step explanation:

3 0
4 years ago
I need help with this
Monica [59]

Using derivatives, it is found that regarding the tangent line to the function, we have that:

  • The slope is of 962.
  • The equation of the line is y = 962x - 5119.

<h3>What is a linear function?</h3>

A linear function is modeled by:

y = mx + b

In which:

  • m is the slope, which is the rate of change, that is, by how much y changes when x changes by 1.
  • b is the y-intercept, which is the value of y when x = 0, and can also be interpreted as the initial value of the function.

The slope of the line tangent to a function f(x) at x = x' is given by f'(x'). In this problem, the function is given by:

f(x) = 5x³ + 2x + 1.

The derivative is given by:

f'(x) = 15x² + 2.

Hence the slope at x = 8 is:

m = f'(8) = 15(8)² + 2 = 962.

The line goes through the point (8,f(8)), hence:

f(8) = 5(8)³ + 2(8) + 1 = 2577.

Hence:

y = 962x + b

2577 = 962(8) + b

b = -5119.

Hence the equation is:

y = 962x - 5119.

More can be learned about tangent lines at brainly.com/question/8174665

#SPJ1

7 0
2 years ago
Does the graph represent a function?
Musya8 [376]

Answer:

yes

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
I need help please ASAP
grin007 [14]
I’m pretty sure it is the first one
6 0
3 years ago
Other questions:
  • Which rules define the function graphed below? Y (0,3) (3, 2) Hem -3 -7 -1 2 a 6 I N P T 4 1 y = 2x+3; y = -x + 3 y=2x, y=-=​
    9·1 answer
  • The following expression represents the population of colony of penguins in Antarctica: P,= 17.2.3 P, is the penguin population,
    10·1 answer
  • PLEASE HELP ASAP!!!!!!!!!!!!!!
    11·1 answer
  • -2=-4(-7y+1)+5(8+2y)
    12·1 answer
  • Kermit's favorite iced tea is made with 151515 tea bags in every 222 liters of water. Peggy made a 121212-liter batch of iced te
    6·1 answer
  • Find LN in the image below .
    12·1 answer
  • No links or anything
    7·1 answer
  • 1.2, 3, 7.5, 18.75, ...
    14·1 answer
  • Hello please help i’ll give brainliest
    7·1 answer
  • 4x6x7xx9x9x0x0xx8x8666666666666666666
    13·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!