2. Find the sum of the geometric series.

2. Find The Sum Of The Geometric Series.

Answers

Answer 1

Answer:

324

Step-by-step explanation:

** The attachment shows an arithmetic sequence **

Sum of Arithmetic Series formula

[tex]S_n=\dfrac12n(a+l)[/tex]

where:

a = initial terml = last term

[tex]a_n=2n-1[/tex]

[tex]\implies a_1=2(1)-1=1[/tex]

[tex]\implies a_{18}=2(18)-1=35[/tex]

[tex]\implies S_{18}=\dfrac12(18)(1+35)=324[/tex]

Answer 2

[tex]\\ \rm\Rrightarrow \sum^{18}_{n=1}2n-1[/tex]

[tex]\\ \rm\Rrightarrow 2(1)-1+2(2)-1\dots+2(18)-1[/tex]

a=2-1=1a_18=l=36-1=35

So

[tex]\\ \rm\Rrightarrow S_n=\dfrac{n(a+l)}{2}[/tex]

[tex]\\ \rm\Rrightarrow S_n=\dfrac{18(1+35)}{2}=9(36)=324[/tex]


Related Questions

how do you say if a number is greater than 0 it equals one but if it's less than 0 it the actual number

Answers

Answer:

If n > 0, then n= 1

If n < 0, then n=n

If you could word this a bit differently, I might be able to help more, but this is what I'm getting from it. The way you worded it is a bit confusing.

please help mee i beg

Answers

Step-by-step explanation:

8.5 × -3 = a

-25.5 = a

b - 7 = -11

b = -4

c -(-3) = 15

c = 12

d - 4 = 32

d = 36

if you still have any doubts feel free to ask

A locker requires a three-digit code to open the lock. The code must contain one letter and two numbers, and no letter or number can be repeated. You can choose from among four letters, A, B, C, and D, and two numbers, 5 and 6.
The size of the sample space is


If a code is chosen at random, the probability that it has a letter that immediately follows an odd number is


If a code is chosen at random, the probability that D is in the code but is not in the first position is

Answers

Answer:

B56 or D65 or B65 or D56

Step-by-step explanation:

a. 36, 26letters + 10 numbers

b. 1/2

c. 1/4

The size of the sample space is 8.

The probability that it has a letter that immediately follows an odd number is 1/2.

There is no probability that D is in the code but not in the first position.

What is probability?

It is the chance of an event to occur from a total number of outcomes.

The formula for probability is given as:

Probability = Number of required events / Total number of outcomes.

Example:

The probability of getting a head in tossing a coin.

P(H) = 1/2

We have,

The size of the sample space is the number of ways to choose one letter and two numbers, without repetition.

We can choose the letter in 4 ways, the first number in 2 ways, and the second number in 1 way (since we can't repeat a number), giving a total of 4 x 2 x 1 = 8 possible codes.

Let's list all the possible codes: 5A6, 5B6, 5C6, 5D6, 56A, 56B, 56C, 56D

The probability that a code has a letter that immediately follows an odd number:

We need to count the number of codes that have a letter following an odd number.

From the list above, we see that the codes 5B6, 5D6, 56B, and 56D have a letter following an odd number.

Therefore, there are four favorable outcomes out of eight possible outcomes.

So the probability is 4/8 = 1/2.

The Probability that D is in the code but not in the first position:

D can be in the second or third position.

If D is in the second position, there are 3 ways to choose the first digit (since we can't use D, and we can't repeat the first digit), and 1 way to choose the third digit, giving a total of 3 * 1 = 3 codes.

If D is in the third position, there are 3 ways to choose the first digit and 2 ways to choose the second digit (since we can't repeat any digit), giving a total of 3 x 2 = 6 codes.

So there are 3 + 6 = 9 favorable outcomes out of 8 possible outcomes (since there are 8 possible codes in total).

Therefore, the probability is 9/8, which is greater than 1.

This is not possible, so the answer is that there is no probability that D is in the code but not in the first position.

Thus,

The size of the sample space is 8.

The probability that it has a letter that immediately follows an odd number is 1/2.

There is no probability that D is in the code but not in the first position.

Learn more about probability here:

https://brainly.com/question/14099682

#SPJ7

the capacity of cylindrical water tank is 539 litres. if its height is 1.4 metres then find the radius of the base.​

Answers

Answer:

350m

Step-by-step explanation:

• Capacity= volume/1000

• but we know that the volume of the cylinder is

[tex]\pi {r}^{2}h[/tex]

so substitute it I'm the volume space

• The substitute for

[tex]\pi \: as \: \frac{22}{7} \: and \: h \: as \: 1.4 \: and \: also \: capacity \: as \: 539[/tex]

• 539 = ((22/7)× r²× 1.4)/1000

• when you simplify you get r as 350m

!!PLEASE PLEASE PLEASE MARK ME THE BRAINLIEST!!

A shipping crate is shaped like a rectangular
prism. It is 5 feet long by 3 feet wide by 3 feet
high. What is the volume of the crate?

Answers

The volume of the rectangular prism having the dimension 3 feet wide, 5 feet long, and 3 feet tall is 45 cubic feet.

What is a rectangular prism?

A rectangular prism is a closed solid that has two parallel rectangular bases connected by a rectangle surface.

A crate is shaped like a rectangular prism. The crate is 3 feet wide, 5 feet long, and 3 feet tall.

The volume of the rectangular prism will be given as

Volume = length × width × height

Then put the values, we have

Volume = 3 × 5 x 3

Volume = 45

The volume of the rectangular prism having the dimension 3 feet wide, 5 feet long, and 3 feet tall is 45 cubic feet.

More about the rectangular prism link is given below.

brainly.com/question/21308574

Length=L=5ftWidth=B=3height=H=3

Volume

LBH5(3)(3)5(3)²5(9)45ft³

Rearrange 4x+2y to make Y the subject.

Answers

Answer:
y= -2x

Explanation:
4x+2y=0
2y= -4x
y= -2x

Hello find the limit stated below

[tex]\\ \rm\Rrightarrow {\displaystyle{\lim_{x\to 0}}}\dfrac{sin^3x+3cosx-cot^2x}{tan^3x+7sinx+3sec^2x}-e^{3x}[/tex]


Note:-

Make sure to include proper explanation and all steps ​

Answers

Answer:

[tex]\displaystyle \lim_{x \to 0} \frac{\sin^3 x + 3\cos x - \cot^2 x}{\tan^3 x + 7 \sin x + 3 \sec^2 x} - e^{3x} = \boxed{- \infty}[/tex]

General Formulas and Concepts:
Calculus

Limits

Graphical Limits

Right-Side Limit:
[tex]\displaystyle \lim_{x \to c^+} f(x)[/tex]

Left-Side Limit:
[tex]\displaystyle \lim_{x \to c^-} f(x)[/tex]

Limit Rule [Variable Direct Substitution]:
[tex]\displaystyle \lim_{x \to c} x = c[/tex]

Discontinuities

Removable (Hole)JumpInfinite (Asymptote)

Step-by-step explanation:

Step 1: Define

Identify given.

[tex]\displaystyle \lim_{x \to 0} \frac{\sin^3 x + 3\cos x - \cot^2 x}{\tan^3 x + 7 \sin x + 3 \sec^2 x} - e^{3x}[/tex]

Step 2: Find Limit

Let's start out by directly substituting x = 0 into our limit.

[Limit] Apply Limit Rule [Variable Direct Substitution]:
[tex]\displaystyle \lim_{x \to 0} \frac{\sin^3 x + 3\cos x - \cot^2 x}{\tan^3 x + 7 \sin x + 3 \sec^2 x} - e^{3x} = \frac{\sin^3 0 + 3\cos 0 - \cot^2 0}{\tan^3 0 + 7 \sin 0 + 3 \sec^2 0} - e^{3(0)}[/tex]Simplify:
[tex]\displaystyle \lim_{x \to 0} \frac{\sin^3 x + 3\cos x - \cot^2 x}{\tan^3 x + 7 \sin x + 3 \sec^2 x} - e^{3x} = \text{unde} \text{fined}[/tex]

We can see that the cotangent of 0 is undefined. Since we do not have an indeterminate form, we cannot use L'Hopital's Rule. Let's look at the function graphically (refer to the attachment).

Approaching the left limit, we can see that the graph heads towards negative infinity.

Approaching the right limit, we can see that the graph also heads towards negative infinity.

∴ we can say that the limit as x approaches 0 is equal to negative infinity.

---

Learn more about limits: https://brainly.com/question/23339726

Learn more about calculus: https://brainly.com/question/27351658

---

Topic: AP Calculus AB/BC (Calculus I/I + II)

Unit: Limits

It's plain to see that [tex]e^{3x}\to1[/tex] as [tex]x\to0[/tex], so I'll focus on the trigonometric expression.

Multiply uniformly through the expression by [tex]\sin^2(x)\cos^3(x)[/tex] :

[tex]\dfrac{\sin^3(x) + 3\cos(x) - \cot^2(x)}{\tan^3(x) + 7\sin(x) + 3\sec^2(x)}[/tex]

[tex]= \dfrac{\cos^3(x) \left(\sin^5(x) + 3\cos(x)\sin^2(x) - \cos^2(x)\right)}{\sin^2(x) \left(\sin^3(x) + 7\cos^3(x)\sin(x) + 3\cos(x)\right)}[/tex]

Now as [tex]x\to0[/tex],

• [tex]\cos^3(x)\to1[/tex]

• [tex]\sin^5(x)+3\cos(x)\sin^2(x)-\cos^2(x)\to-1[/tex]

• [tex]\sin^3(x) + 7\cos^3(x)\sin(x) + 3\cos(x) \to 3[/tex]

but [tex]\sin^2(x)\to0[/tex], so [tex]x = 0[/tex] a non-removable discontinuity. Then from either side of [tex]x = 0[/tex], [tex]\frac1{\sin^2(x)}\to+\infty[/tex], and taking into account the sign from the second point above, the overall limit would be

[tex]\displaystyle \lim_{x\to0} \frac{\sin^3(x) + 3\cos(x) - \cot^2(x)}{\tan^3(x) + 7\sin(x) + 3\sec^2(x)} - e^{3x} = -\infty-1 = \boxed{-\infty}[/tex]

What is 3/4 divided by 7/10

Answers

Answer:

1.07

Step-by-step explanation:

Dara and Jo share £420 in the ratio 2:5.
Calculate how much Dara and Jo receive each.

Answers

Answer:

Dara receives £120 and Jo receives £300

Step-by-step explanation:

D:J

2:5

5+2=7

£420÷7= £60

1 on the ratio= £60

Dara:

£60 × 2= £120

Jo:

£60× 5= £300

If the diameter of the small can is 4 cm and its height 6 cm, find its total surface area, in cm².

Answers

Answer:

100.53cm2 if I'm not mistaken. or 32π cm2

What is the length of the missing leg? If necessary, round to the nearest tenth

Answers

Answer: 48 yards

Step-by-step explanation:

Answer: 48 yd

Step-by-step explanation:

when trying to find one leg of a triangle given the other two, a^2 +b^2 = c^2 is applicable. A representing the first leg, B representing the second, and C representing the hypotenouse (a and b are interchangeable). So,

formula: a^2 + b^2 = c^2

insert given: 20^2 + b^2 = 52^2

exponents: 400 + b^2 = 2704

subtract: b^2 = 2704 - 400

simplify: b^2 = 2304

square root of both sides: b = [tex]\sqrt{2304}[/tex]

answer: b = 48

please help! what is the arc RU? thank you so much!

Answers

Answer: 92° or 1.6057 radians

Step-by-step explanation:

the 4 angles created by the intersecting lines SU and RT have to equal 360°

<v = 88° because of vertical angles so

88° • 2 = 176°

360° - 176° = 184°

184°/ 2 = 92°

92°+92°+88°+88° = 360°

then, that makes 92° the central angle of arc RU and the central angle degrees is always equal to the arc it subtends

hope this helps :)

i will give 70 -0ints

Answers

Answer:

See below ~

Step-by-step explanation:

(a) Mean of the data

2.4 + 1.6 + 3.2 + 0.3 + 1.5 / 59/51.8

(b) New mean after each data point increased by 10

12.4 + 11.6 + 13.2 + 10.3 + 11.5 / 559/511.8

(c) New mean after each data point doubled [from (b)]

24.8 + 23.2 + 26.4 + 20.6 + 23 / 5118/523.6

Answer:

a) 1.8

b) 11.8

c) 23.6

mean: sum of numbers/total numbers

Part A

⇒ mean: (2.4+1.6+3.2+0.3+1.6)/5 ⇒ 9/5 ⇒  1.8

Part B

If all the data's are increased by 10

{12.4, 11.6, 13.2, 10.3, 11.5}

Then mean ⇒ (12.4+11.6+13.2+10.3+11.5)/5 ⇒ 11.8

Part C

if the new data doubled, the mean will be double

11.8 * 2 = 23.6

Evalueate the measure x in the figure.

Answers

Answer:

82 degrees

Step-by-step explanation:

180-98 = 82

They are supplementary and make 180 in total so x is 82

Please help. I'll mark you brainliest if right. I really need help

Answers

Answer: Θ = π + 2kπ

Explanation:

cosΘ + 1 = 0
cosΘ = -1

Using the unit circle to help, we must determine what value of theta (in radians) makes cosine -1.

On the unit circle, there is only place where cosine is -1, and that is at π.

Since it asks to find all solutions, we use the “+ 2kπ” to account for them. (Let me know if you need an explanation of why this works/what this means.)

Will give brainliest!!!

Answers

Answer:

5,-5,-2 are the solutions

Step-by-step explanation:

f(x)=0 thus, either:

1) x+5 = 0 and thus x= -5

or

2) x+2=0

thus x= -2

or

3) x - 5 = 0

thus x = 5

notice that the other bracket can be written as:

(x+2)(x-5)

please just answer my question on this image

Answers

Answer:

It's the first one because 5 x 3 = 15 and 10 x 3 = 30 and 15 x 3 = 45 and so on..

Step-by-step explanation:

Answer:

The first one answer, because pattern X is 3 times the corresponding term in pattern Y.

5 x 3= 15

10 x 3=30

15 x 3= 45

20 x 3=60

whats this? mulitply 12.1/4

Answers

Answer: 3

Step-by-step explanation: 12/1 × 1/4

Junk food is known for having a lot of "empty calories." Which statement BEST explains the meaning of that term?
A.
Empty calories do not have many nutrients.
B.
Empty calories are made entirely from sugar.
C.
Empty calories need exercise to burn them off.
D. Empty calories are excluded from daily calorie counts.

Answers

Answer:

A

Step-by-step explanation:

Answer:

A. Empty calories do not have many nutrients.

Step-by-step explanation:

5.0.75% of 80 is what number?

A. 0.6


B.0060


C.60


D.6000

Answers

Answer:

Um im sure the answer is C btw

Step-by-step explanation:

correct me if im wrong

0.6 from what I remember

Last week, the price of bananas at a grocery store was $0. 80 per pound.

This week, pears at the same grocery store are on sale at 25% discount.

What is the total price of 5. 5 pounds of bananas this week at the grocery

store?*

How do you solve this

Answers

Answer:

.2 maybe but I don't know how to do this

3. Which value is not needed to construct a box plot?
A. upper quartile B. minimum value
C. median
D. mean

Answers

the answer is d because

on her first day of work, mia sold one straw hat. on day two, she sold three straw hats. on day three, she sold five straw hats, on each succeeding day, she sold two more straw hats than she had sold on the previous day. how many straw hats in total had mia sold after working 40 days?

Answers

If Mia sold 2 more hats on each suceeding day, after working 40 days it is expected Mia had sold a total of 1523 hats.

How many hats will Mia sell everyday?

Day: Hats

1 = 12=33 = 54=75= 96=117= 138= 159=1710=1911= 2112=2313= 25among others

You can notice the number of hats she will sell follow a pattern as there are only sequential odd numbers.

How many hats will Mia sell in total?

By following the sequence let's add the hats she will sell everyday:

1 + 3 + 5 + 7 + 9 + 11 + 13 + 15 + 17 + 19 + 21 + 23 + 25 + 27 + 29 + 31 + 33 + 35 + 37 + 39 + 41 + 43 + 45 + 47 + 49 + 51 + 53 + 55 + 57 + 59 + 61 + 63 + 65 + 67 + 69 + 71 + 73 + 75 + 79 = 1523

Learn more about sums in: https://brainly.com/question/13013054

The function f(t) is given by the graph. What is the domain of f(t)?

Answers

Check the picture below.

Answer:

-4 ≤ t ≤ 4

Step-by-step explanation:

Suppose that scores on an exam are normally distributed with mean 80 and standard deviation 5, and that scores are not rounded. What is the probability that a student scores higher than 85 on the exam

Answers

Answer:

3

Step-by-step explanation:

cus it's two 80s and 2 5 so 5 minus 2 is 3

Which relation is a function?

Answers

Answer:

the third (bottom left) option

Step-by-step explanation:

for every valid value of x there must be exactly one value of y.

the first option is valid only for positive x, but then for every valid x there are always 2 possible y values (a positive and a negative one).

the second option is defined for only one value of x (3), but this x has infinitely many y values.

the fourth option is a circle defined for -r <= x <= r (r being the radius). in this defined interval almost every x has 2 assigned y values (only x = -r and x = r have one y value).

Paul is going to buy a collectible vintage painting from a local art gallery. the painting is priced at $600 in the gallery. the gallery owner does accept credit cards but prefers cash. in fact, he offers to give paul a 5% discount if he can pay in cash. paul doesn't have any cash but can get a cash advance on his credit card. his credit card has an apr of 16% on credit purchases and a 32% apr on cash advances. assuming paul wants to pay the painting off over 12 months, which of the following is true? a. paul will pay a total of $696, over 12 months, if he purchases the painting with his credit card. b. paul will pay a total of $653.28, over 12 months, if he purchases the painting with his credit card. c. paul will pay a total of $782.40, over 12 months, if he purchases the painting with a cash advance for discounted purchase price. d. paul will pay a total of $708.96, over 12 months, if he purchases the painting with a cash advance for discounted purchase price.

Answers

When Paul will pay the amount over 12 months, if he purchases the painting with cash advance the discounted purchase price will be $782.40. Then the correct option is C.

What is APR?

APR on a credit card is the way of saying that the interest you are charged over a year is equal to roughly of your balance.

Paul is going to buy a collectible vintage painting from a local art gallery.

The painting is priced at $600 in the gallery.

The gallery owner does accept credit cards but prefers cash.

In fact, he offers to give paul a 5% discount if he can pay in cash.

Paul doesn't have any cash but can get a cash advance on his credit card.

His credit card has an apr of 16% on credit purchases and a 32% apr on cash advances.

When Paul will pay the amount over 12 months, if he purchases the painting with cash advance the discounted purchase price will be

[tex]\rm A = 0.95 \times 600 (1+\dfrac{0.32}{12})^{12}\\\\A = 782.40[/tex]

More about the APR link is given below.

https://brainly.com/question/8846837

Identify the rule that correctly describes each sequence. 12, 8, 4, 0, –4, … each term is 4 more than the previous term. each term is 4 less than the previous term. each term is 1/2 the previous term. each term is 2/3 the previous term.

Answers

Answer:

Each term is 4 less than the previous term

Step-by-step explanation:

Term  Difference

12          --

8           -4

4          -4

0          -4

-4         -4

Answer:

First one is B and the second one is D

Step-by-step explanation:

Just did it on Edge2023

Explain to The Answer to Please

Answers

Answer:

X cord: 1

Y cord: -2

Step-by-step explanation:

X cord is left to right and is one point right.

Y Cord is up and down and is 2 down. the - implies negative because the point is down.

(If you need help with this or other problems Here is a good website to help, https://www.splashlearn.com/math-vocabulary/geometry/coordinate-plane)

Δ ABC and ΔDEF are similar triangles. If m∠A =104∘and m∠E = 36∘, what is ∠C?
1. 36
2. 40
3. 76
4. 104

Answers

Answer:

2

x=40

Step-by-step explanation:

A triangle has 180 degrees and considering that triangle ABC is similar to DEF that means they have the same angle (A=D,B=E,C=F)

180=104 +36+x

180=140+x

180-140=x

40=×

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