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
Sedbober [7]
2 years ago
11

Consider the series 4 + 12 + 36 ... Find the sum of the first 9 terms.​

Mathematics
1 answer:
jeyben [28]2 years ago
3 0

Answer:

39364

Step-by-step explanation:

You can simplify the equation to make 4(1+3+9...) The nth term is therefore 3^{n-1} so u can substitute that into the equation so 4(3^{n-1}+ 3^{n}  + 3^{n+1}..). This would simplify to 4(3^0 +3+3^2+3^3+3^4+3^5+3^6+3^7+3^8). By simplifying this, you can make it so 4(2^2+6^2+18^2+42^2+81^2) = 4(4+36+324+2916+6561) =39364

You might be interested in
The function f is a defined by f (x) =x^2+6<br> Find f (3x)
Elina [12.6K]

Step-by-step explanation:

here

f(x)=x^2+6

Now

Replacing the value of x

f(3x)=3x^2 +6

4 0
2 years ago
I REALLY NEED HELP ON THIS PLS HELP
Eva8 [605]

Part (a)

Answer: See the attached image below to see the filled out chart.

Note how rational and irrational numbers have nothing in common. This means there is no overlap. So they go in the rectangles. The two sets of numbers join up to form the entire set of real numbers.

Integers are in the set of rational numbers. This is because something like 7 is also 7/1; however 1/7 is not an integer. So not all rational numbers are integers. The larger purple circle is the set of integers.

The smaller blue circle is the set of whole numbers. The set of whole numbers is a subset of integers. Recall the set of whole numbers is {0,1,2,3,...} so we ignore the negative values only focusing on 0 and positive numbers that don't have any fractional values. In contrast, the set of integers is {..., -3, -2, -1, 0, 1, 2, 3, ...} here we do include the negatives.

============================================================

Part (b)

1) Some irrational numbers are integers.

This is false. An irrational number is not rational. The set of integers is contained entirely in the set of rational numbers.

---------------------------------

2) Some whole numbers are not irrational numbers.

This is false. The statement implies that some whole numbers are irrational, but the set of whole numbers is inside the set of rational numbers, which has no overlap with the irrationals. The statement should be "All whole numbers are not irrational numbers".

---------------------------------

3) All rational numbers are whole numbers.

This is false. A rational number like 1/3 is not a whole number.

---------------------------------

4) All integers are whole numbers

This is false. An integer like -44 is not a whole number because the set of whole numbers is {0,1,2,3,...} and we're not including negative values.

---------------------------------

In summary, all four statements for part (b) are false.

8 0
2 years ago
Read 2 more answers
A pizza parlor charges $8 per pizza plus $0.65 per topping. Which equation can be used to find the cost of a pizza that costs $1
aksik [14]
It would be 3! Have a good DAY
3 0
2 years ago
What is 2.1 divided by 12.6
allochka39001 [22]

Answer:

0.16666666666

6 0
3 years ago
Read 2 more answers
Set up an linear equation and solve the following number word problem:
IRINA_888 [86]

Answer:

let the number be y

4(y-7)=48

y-7=48/4

y-7=12

y=12+7=19

I would appreciate if my answer is chosen as a brainliest answer

3 0
2 years ago
Other questions:
  • Write the complete balanced equation for the reaction between barium oxide (BaO) and water (H2O). You do not need to make the su
    14·2 answers
  • Solve 3sinx-4sin^3 x= -1
    15·1 answer
  • Please please please help with this
    9·1 answer
  • Write the following using index notation
    7·2 answers
  • Find the area of a circle with a circumference of 3.14 units
    10·1 answer
  • The perimeter of a square is equal to the perimeter of an equilateral triangle. The length of a side of the square is given by x
    10·1 answer
  • Given h(x) = x2 + 3.<br> h(x) = 103, what is x?
    15·1 answer
  • Triangle RST has vertices located at R (2, 3), S (4, 4), and T (5, 0). Part A: Find the length of each side of the triangle. Sho
    7·1 answer
  • PLS ANSWER ASAP!!person with correct answer will be marked brainliest
    11·2 answers
  • Please give me answer I will give you brilliantly​
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!