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
Anettt [7]
3 years ago
8

Find S15 for the geometric series 72 + 12 + 2 + 1/3 +…

Mathematics
1 answer:
Gemiola [76]3 years ago
5 0
S1 = 72
S2 = 12 = 72*(1/6)
S3 = 2 = 72*(1/6)^2
.
.
.
S15 = 72*(1/6)^14 = 9.18*10^(-10)
You might be interested in
Neeeed help plssss solve just one to see how the way to solve others because I don’t understand the question ❤️ pls pls pleaaaas
spin [16.1K]
The descriminant is b^2-4ac so for 26 it would be -5^2 - 4 (1) (7). The quadratic formula is -B plus or minus the square root of b squared minus 4ac over 2a
8 0
2 years ago
5x 4 1/2 Answer with a mixed number in simplest form.
nekit [7.7K]

Answer:

22 1/2

Step-by-step explanation:

5x4\frac{1}{2} =\frac{9}{2} x\frac{5}{1} = \frac{45}{2} = 22\frac{1}{2}

3 0
3 years ago
Michael wants to rent a boat and spend less than $53 the boat cost six dollars per Michael wants to rent a boat and spend less t
ASHA 777 [7]
Hi hope I helped, ok so first 6×7=42 and its less than 53 so ur answer is 42
5 0
3 years ago
3 (a) Simplify e+ es
ANEK [815]

Answer:

I don't understand your question but here's some sample of simplify

Step-by-step explanation:

Simplify –(46x2y3z)0

The parenthetical portion still simplifies to 1, but this time the "minus" is out in front of the parentheses; that is, it's out from under the power, so the exponent doesn't touch it. So the answer in this case is:

–(46x2y3z)0 = –1

7 0
2 years ago
Write as a single term: cos(2x) cos(x) + sin(2x) sin(x)
GREYUIT [131]

Answer: cos(x)

Step-by-step explanation:

We have  

sin ( x + y ) = sin(x)*cos(y) + cos(x)*sin(y)   (1)   and

cos ( x + y ) = cos(x)*cos(y) - sin(x)*sin(y)  (2)

From eq. (1)

if x = y

sin ( x + x ) = sin(x)*cos(x) + cos(x)*sin(x) ⇒ sin(2x) = 2sin(x)cos(x)

From eq. 2

If x = y

cos ( x + x ) = cos(x)*cos(x) - sin(x)*sin(x)  ⇒ cos²(x) - sin²(x)

cos (2x) = cos²(x) - sin²(x)

Hence:The expression:

cos(2x) cos(x) + sin(2x) sin(x)  (3)

Subtition of sin(2x) and cos(2x)  in eq. 3

[cos²(x)-sin²(x)]*cos(x) + [(2sen(x)cos(x)]*sin(x)

and operating

cos³(x) - sin²(x)cos(x) + 2sin²(x)cos(x) = cos³(x) + sin²(x)cos(x)

cos (x) [ cos²(x) + sin²(x) ]  = cos(x)

since cos²(x) + sin²(x) = 1

8 0
3 years ago
Other questions:
  • After visiting the Titanic, Captain Brain and Mr. Pinky are taking the Alvin submarine back to the surface of the water. They st
    6·2 answers
  • Can someone please help me?​
    12·1 answer
  • Answer each question about each polygon.
    11·1 answer
  • What is the answer to 72 = 24 + w
    13·2 answers
  • PLEASE HELP MEEE WILL GIVE BRAINLIEST!!!!
    10·1 answer
  • At a large Midwestern university, a simple random sample of 100 entering freshmen in 1993 found that 20 of the sampled freshmen
    6·1 answer
  • The product of
    15·1 answer
  • What is the area of this figure?<br><br> Enter your answer in the box.
    12·1 answer
  • Use cramer's rule of x-3y+z=13,3x+2y-z=1,5x+7y+2z=9​
    14·2 answers
  • Find the error(s) and solve the <br> problem correctly. <br> Given: Prove: ∆TFS ≅ ∆PFQ
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!