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
jolli1 [7]
3 years ago
11

Math help! PLEAAASSEE

Mathematics
1 answer:
mina [271]3 years ago
5 0
The formula for the sum of a geometric sequence with first term "a", common ratio "r" and number of terms "n" is
  S = a·(r^n -1)/(r -1)
You have a=2, r=-2, n=7, so the sum is
  S = 2·((-2)^7 -1)/(-2 -1)
  = 2(-128-1)/(-3)
  = 2(43) = 86

You might be interested in
Which solid figure has six vertices?
koban [17]
A triangular prism has six vertices.
8 0
3 years ago
TIMED QUESTION Which are the roots of the quadratic function f(b) = b2 – 75? Select TWO options.
Setler [38]

Answer:

b=5\sqrt{3} (b = 5 StartRoot 3 EndRoot)

and

b=-5\sqrt{3} (b = Negative 5 StartRoot 3 EndRoot)

Step-by-step explanation:

we have

f(b)=b^{2}-75

we know that

The roots of the quadratic function are the values of x when the value of the function is equal to zero

so

For f(b)=0

b^{2}-75=0

Solve for b

Adds 75 both sides

b^{2}=75

take square root both sides

b=(+/-)\sqrt{75}

Simplify

b=(+/-)5\sqrt{3}

therefore

b=5\sqrt{3} (b = 5 StartRoot 3 EndRoot)

and

b=-5\sqrt{3} (b = Negative 5 StartRoot 3 EndRoot)

6 0
3 years ago
Read 2 more answers
Mathhh helpp me plzzz
ludmilkaskok [199]

Answer:

170 bbdbdbdbebsbsbsndnd

4 0
3 years ago
Find the flux of f = x3 i y3 j z3 k out of the closed surface z = x2 y2 , 0 ≤ z ≤ 5 oriented outward. g
borishaifa [10]

The flux of the given function f = x³i + y³j + z³k is given by f',

f' = 3(x²i + y²j + z²k)

Given, f = x³i + y³j + z³k

we have to find the flux of the given function f = x³i + y³j + z³k

On partial differentiating the function, we get

f' = 3x²i + 3y²j + 3z²k

f' = 3(x²i + y²j + z²k)

So, the flux of the given function f = x³i + y³j + z³k is given by f',

f' = 3(x²i + y²j + z²k)

Hence, the flux of the given function f = x³i + y³j + z³k is given by f',

f' = 3(x²i + y²j + z²k)

Learn more about Vector Calculus here brainly.com/question/10164701

#SPJ4

6 0
2 years ago
Tyrell bought a pair of jeans for $23.99. With sales tax, the total was $25.67. What was the amount of the sales tax?
Tanzania [10]

Answer:

1.68

Step-by-step explanation:

8 0
4 years ago
Read 2 more answers
Other questions:
  • 0.6y−1.5=0.3(y−4) <br> please show all work in a clear format
    7·1 answer
  • How to find the x-intercept
    7·1 answer
  • The graph below shows three different normal distributions. 3 normal distributions are shown. All 3 are at different points on t
    8·2 answers
  • The terminal side of θ in standard position contains the point (3, 0). Find the exact values of the six trigonometric functions
    5·1 answer
  • Find the partial derivatives of the following functions
    6·1 answer
  • A cell phone company charges a one-time activation fee, as well as a monthly service charge for a cell phone plan with unlimited
    13·1 answer
  • 3x+5(2+x)=4x-7 help me out here?
    12·2 answers
  • What is 100 divided by 3?
    5·2 answers
  • When 1,250
    7·1 answer
  • CAN SOMEBODY EXPLAIN HOW TO DO THIS IT'S MY 5TH TIME ASKING AND NOBODY EVEN HELPS ME!
    14·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!