Find the sum of the first 50 terms of the sequence below.
An = 3n + 2

Answers

Answer 1
An+1= 3n+3 +2
An+1 - An = 3n+5 -3n-2=3
An is aa arithmetic sequence
its sum is given by:
A0 +A1 +A2 + . . . + An = N(Ao + An) /2
where N = n-0=n
S50= A0 +A1 +A2 + . . . + A50 = 50(Ao + A50) /2

S50 = 50(Ao + A50) /2
Ao=2, A50=150+2=152
S50= 50(Ao + A50) /2

finally
S50=25*154=3850

Answer 2

Answer:

3925

Step-by-step explanation:

this  arithmetic  sequence  the first term is : A1 = 3(1)+2=5

and common difference is  r = 3

the sum of the first 50 terms  is : S50 = 50/2(A1  + A50)

A50 = 3(50)+2 = 152

S50 = 50/2(5  + 152)= 3925


Related Questions

How many feet are in 120 inches?

__ ft

Answers

1 ft is 12 inches.
To obtain 120 inches, multiply both numbers above by 10.

12 inches multiplied by 10 is 120 inches. 
1 ft multiplied by 10 is 10 ft.

Hence, 120 inches is 10 ft.

The marginal cost function of producing q mountain bikes is 600/0.3q+5.
If the fixed cost in producing the bicycles is 2200 , find the total cost to produce 30 bicycles.
If the bikes are sold for 205 each, what is the profit (or loss) on the first 30 bicycles?
Find the marginal profit on the 31st bicycle. ...?

Answers

Final answer:

The total cost to produce 30 bicycles is $5599.89. The profit from first 30 bikes is $550.11. The marginal profit on the 31st bike is $126.57.

Explanation:

The marginal cost function given is 600/(0.3q+5). To find the total cost to produce 30 bicycles, we need to integrate the marginal cost from 0 to 30 and add the fixed cost of 2200.

The result of the integration is 2000*(ln|1+0.3q|). Calculating from 0 to 30 gives us 3599.89. Thus, the total cost to produce 30 bicycles considering the fixed cost is 5599.89.

The revenue of each bike sold is $205. So, the total revenue generated from selling 30 bikes is 30*$205 = $6150. The profit is then the difference between the revenue and the total cost, giving us $6150-$5599.89 = $550.11.

To find the marginal profit on the 31st bike, subtract the marginal cost at 31 bikes from the selling price. The marginal cost at 31 bikes is the marginal cost function evaluated at q=31, which is approximately $78.43, and hence, the marginal profit on the 31st bike is $205 - $78.43 = $126.57.

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Final answer:

To find the total cost, multiply the quantity by the marginal cost function and add the fixed cost. To find the profit or loss, subtract the total cost from the revenue. The marginal profit can be found by subtracting the marginal cost from the selling price.

Explanation:

To find the total cost to produce 30 bicycles, you need to calculate the variable cost and add it to the fixed cost. The variable cost can be found by multiplying the marginal cost function by the quantity of bikes. So, the variable cost is (600/0.3*30 + 5) = 6105. Adding the fixed cost of 2200 gives us a total cost of 8305.

To find the profit or loss on the first 30 bicycles, we need to subtract the total cost from the revenue, which is the selling price multiplied by the quantity. So, the revenue is 205 * 30 = 6150. The profit or loss is then 6150 - 8305 = -2155, indicating a loss of $2155.

The marginal profit on the 31st bicycle can be found by subtracting the marginal cost from the selling price. So, the marginal profit is 205 - (600/0.3*31 + 5) = -55, indicating a loss on the 31st bicycle.

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which of the following is equivalent to 14x2+35x when it is completely factored?

A. 7x(2x+5)
B. 7(2x2+5x)
C. 14x(x+3)
D. x(14x+35)

Answers

A. 7x(2x+5) that is the answer

The equivalent factored form is A. 7x(2x + 5).

How to determine the equivalent to 14x2+35x when it is completely factored

To factorize the expression 14x^2 + 35x completely, we look for the greatest common factor (GCF) of the terms and apply the distributive property.

In this case, the GCF of 14x^2 and 35x is 7x.

So, we can factor out 7x from the expression:

14x^2 + 35x = 7x(2x + 5)

Therefore, the equivalent factored form is A. 7x(2x + 5).

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About 11% of the population is math phobic. If two people are randomly selected, what is the probability that both are math phobic? What is the probability that at least one is math phobic? ...?

Answers

Answer:

P(at least one phobic)

= 1 - P(none phobic)

= 1 - 0.89^2

= 1-0.7921

= 0.2079

Step-by-step explanation:

Can you use PEMDAS without parenthesis, exponents, division, or subtraction? Example: 5+1x10=?

Answers

if there are that many things missing then go left to right; 5+1 then multiply the sum by ten

5+1=6
6x10=60

I hope I was helpful


yes just use wat you learned with PEMDAS 
Since you dont have parenthesis or exponents or the division 
just do 1x10 first and you get 10 then you do 5+10 = 15 
so for the example you set it would be 15

when translating English sentences into math equations, the word is usually translates to which math symbol?

Answers

" is " means equals <====
Ok how you Translating English into math equation here's an Example down below⬇

Lets say you had a sentence like five more than a number is ten

so we would write that as

n+5=10 (N-stands for numbers, The + Stands for More, 5 stand for five, The equal sign stands for Is and then we finally add 10 at the end

Hope this helps you Mia
 

How many fifths are the in 60/100

Answers

In order to calculate that, we need to divide it by 1/5 as follows:
60/100 / 1/5

We can re-write it as: 60/100 * 5 = 6/10 * 5 = 30/10 = 3

So, there are "3" 1/5ths in 60/100

Hope this helps!

Did I do this correctly and if any errors just tell me in the comments

Answers

Looks good to me! ;)
Looks correct. I am not a math wiz but I can answer that.

Ahmed is taking orders for lunch. A slice of pizza cost $2.9 and a chicken sandwich costs $3.9. He collects $25.3 for the group of 7 people.
Let x=number of pizza orders.Let y=number of chicken orders

Answers

X+Y=7
2.9X+3.9Y=25.3
Get X by itself: X=7-Y
Substitute for X: 2.9(7-Y)+3.9Y=25.3
Time it out: 19.5-2.9Y+3.9Y=25.3
Add the Ys: 19.5+Y=25.3
Subtract from both sides: Y=5
So, X is equal to two orders, and Y is five.


A line segment has endpoints at (–1, 4) and (4, 1). Which reflection will produce an image with endpoints at (–4, 1) and (–1, –4)?
a reflection of the line segment across the x-axis
a reflection of the line segment across the y-axis
a reflection of the line segment across the line y = x
a reflection of the line segment across the line y = –x

Answers

Answer:- A reflection of the line segment across the line y = –x .


Explanation:-

A reflection over the line y = -x, the x-coordinate and y-coordinate interchange their places and they are negated (the signs are changed).

Given :- A line segment has endpoints at (–1, 4) and (4, 1) such that it reflects produce an image with endpoints at (–4, 1) and (–1, –4).

(-1, 4)→(-4, 1) and

(4, 1)→(-1, -4)

Thus this shows a reflection of the line segment across the line y = –x.

Answer:

A reflection of the line segment across the line y = –x.

Step-by-step explanation:

Given : A line segment has endpoints at (–1, 4) and (4, 1).

To find : Which reflection will produce an image with endpoints at (–4, 1) and (–1, –4).

Solution : We have given that endpoints at (–1, 4) and (4, 1).

After reflection endpoints become  (–4, 1) and (–1, –4).

Reflection:   (–1, 4)  →→ (–4, 1)

                    (4, 1)→→→ (–1, –4).

We can see x coordinate become -y coordinate and y coordinate become -x coordinate.

(x ,y) →→ (–y, -x)

This is the a reflection of the line segment across the line y = –x rule of reflection .

Therefore, a reflection of the line segment across the line y = –x.

Jackie deposited $315 into a bank account that earned 1.5% simple interest each year.

If no money was deposited into or withdrawn from the account, how much money was in the account after ​3​ years?

Round your answer to the nearest cent.

Enter your answer in the box.

Answers

I = p r t
I = 315(.015)(3) = 14.18
Add interest to the principle.
$315. + 14.18 = $329.18

Answer:

Step-by-step explanation:

7

in uniform circular motion, the speed v of point on the edge of a spinning disk is v=2π/T times r. where r is the radius of the disk and T is the time it takes the point to travel once around the circle. Solve the formula for r.

Answers

First lets write down starting formula:

[tex]V = \frac{2 \pi }{T} * r [/tex]

We multiply both sides of = sign by T

T*V = 2*[tex] \pi [/tex]*r

Now we divide both sides with 2*[tex] \pi [/tex]

[tex] \frac{T*V}{2* \pi } =r[/tex]

which is now solved for r

it took Jill two hours to drive 100 miles. what was her average speed?

Answers

average speed is 50 mph
A possible solution could be 50MPH. Meaning, "Miles Per Hour".  If Jill was driving for two hours, and traveled a total of 100 miles within those two hours, then she would have had to been going 50 miles per hour.  So her average speed would be 50 miles per hour.  

A spruce tree is approximately the shape of a cone with a slant height of 20 ft. The angle formed by the tree with the ground measures 72 degrees. Estimate the height of the tree. Round to the nearest foot.
(picture below)

Answers

The answer is 16 feet.

It’s C on Ed It is C It is C

U.s. air has a net income before tax 60,000. it is expected 45% of net income will go to federal and state taxes. how much will u.s. air have left

Answers

60,000 times .45= 27000
60,000-27,000= 33,000
US air will have $30,000 left after federal and state taxes

The graph of a proportional relationship contains the point (20, 4).

What is the corresponding equation?

Enter your answer as a fraction in simplest form

Please help

Answers

The corresponding equation is y = 1/5(x).

A graph of the equation is shown below.

In Mathematics and Geometry, a proportional relationship is a type of relationship that passes through the origin (0, 0) and produces equivalent ratios as represented by the following mathematical equation:

y = kx

Where:

y represents the y-variable​.

x represents the x-variable.

k is the constant of proportionality.

Next, we would determine the constant of proportionality (k) by using the various data points in table B as follows:

Constant of proportionality, k = y/x

Constant of proportionality, k = 4/20

Constant of proportionality, k = 1/5.

In this context, the corresponding equation is given by;

y = 1/5(x)

in a chess match, a win counts 1 point, a draw counts 1/2 point, and a loss counts 0 points. After 15 games, the winner was 4 points ahead of the loser. How many points did the loser have? ...?

Answers

5.5 points, the winner had 9.5

9.5 - 5.5 = 4
5.5 + 9.5 = 15
Final answer:

The loser had 5.5 points in the chess match.

Explanation:

To find out how many points the loser had in the chess match, we can set up an equation. Let's say the loser had x points. The winner was 4 points ahead, so the winner had x + 4 points. Since there were 15 games in total, we can set up the equation:



x + (x + 4) = 15

Combining like terms, we get:



2x + 4 = 15



Subtracting 4 from both sides, we get:



2x = 11



Dividing both sides by 2, we get:



x = 5.5



Therefore, the loser had 5.5 points in the chess match.

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At a candy store, Jenny bought 1 pound of jelly beans and 5 pounds of gummy worms for $41. Meanwhile, Ozzie bought 6 pounds of jelly beans and 2 pounds of gummy worms for $50. How much does the candy cost?

Answers

91 dollars? I did not understand the question
_Award brainliest if i helped thx! 

Let Jelly Beans be X and Gummy Worms be Y
X + 5 Y = 41   , X = 41-5Y
6X + 2 Y = 50 
Substitute X =41-5Y 
6(41-5Y) + 2Y = 50
Y = 7 Hence X = 6
1 Pound of : Jelly Beans Cost $6, Gummy Worms cost $7

Which description can be written as the expression 6b+5?

a) the difference of six times a number and five
b) the sum of six times a number and five
c) quotient of six times a number and five
d) the product of six times a number and five

Answers

Answer: b)  the sum of six times a number and five

Step-by-step explanation:

The given expression is [tex]6b+5[/tex], where b represents any number.

The above expression has two terms combined by addition operation.

In the first term there is one variable b and 6 as coefficient of b and the second term is a constant term of 5.

Therefore, the correct description of the given expression [tex]6b+5[/tex] is " the sum of six times a number and five".

Answer:

Option: b is the correct answer.

b) the sum of six times a number and five.

Step-by-step explanation:

We are given an algebraic expression in term of a variable 'b' as:

                                  6b+5

As we could see that here there are two terms in an expression one is: 6b and the other is 5 which is separated by a summation sign.

  Hence, when 6 times of a number 'b' is added to 5 we get the given expression(i.e. 6b+5)

              Hence, the answer is:  Option: b

Evaluate 5x3 + 2 for x = -1.

-7
-3
4
6

Answers

I hope this helps you

Answer:

The correct option is B) -3

Step-by-step explanation:

Consider the provided expression.

[tex]5x^3 + 2[/tex]

We need to solve the expression when x=-1.

Substitute the values of x in the provided expression.

[tex]5(-1)^3 + 2[/tex]

Simplify the expression.

[tex]5\times -1+ 2[/tex]

[tex]-5+ 2[/tex]

[tex]-3[/tex]

Hence, the value of the provided expression when x=-1 is -3.

Therefore, the correct option is B) -3

Name the property of real numbers illustrated by the equation.

-3(x+4)=-3x-12

Answers

Distributive Property

Answer:

distributive property (a)

Step-by-step explanation:

I got 100/100 so this should be correct for you too.

Planning for the possibility that your home might get struck by lightning and catch on fire is part of a plan for

Answers

This is part of a plan for home safety.

Answer:

Th answer is - protecting assets

Step-by-step explanation:

Planning for the possibility that your home might get struck by lightning and catch on fire is part of a plan for protecting assets.

The protection of assets is a module of financial planning where one is needed to protect his assets against anything like - natural disaster or creditor's claims etc.

A cylinder has a volume of 320 pi cu. in. and a height of 5". Find the radius of the cylinder. ...?

Answers

Answer:

radius of the cylinder is, 8 inches

Step-by-step explanation:

Volume of cylinder(V) is given by:

[tex]V = \pi r^2h[/tex]            .....[1]

where,

r is the radius of the cylinder and

h is the height of the cylinder.

As per the statement:

A cylinder has a volume of 320 pi cu. in. and a height of 5"

⇒[tex]V = 320 \pi[/tex] cubic inches and h = 5 inches

Substitute these values in [1] we have

[tex]320 \pi = \pi r^2 \cdot 5[/tex]

Simplify:

[tex]320 = r^2 \cdot 5[/tex]

Divide both sides by 5 we have;

[tex]64=r^2[/tex]

or

[tex]r^2 = 64[/tex]

⇒[tex]r = \sqrt{64} = 8 in[/tex]

Therefore, the radius of the cylinder is, 8 inches

Final answer:

To find the radius of the cylinder, use the formula for the volume of a cylinder, V = πr²h. Rearrange the formula to solve for the radius, and solve the equation to find the value of r.So,radius of cylinder r=8inches.

Explanation:

To find the radius of the cylinder, we can use the formula for the volume of a cylinder, which is V = πr²h. In this case, we need to solve for the radius, so we rearrange the formula as follows:

320π = πr²(5)

We can cancel out the π's on both sides of the equation:

320 = r²(5)

Divide both sides of the equation by 5:

64 = r²

Take the square root of both sides to solve for r:

r = √64

r = 8

Therefore, the radius of the cylinder is 8 inches.

What is the slopes for (8,2) and (11,3) (8,0) and (8, 6)

Answers

the equation is y2 minus y1 over x2 minus x2 and then the answer you will get will look like a fraction when it is actually rise over the run so the 2 points i chose was (8,2) and (8,0) so 0 minus 2 equals negative 2 and 8 minus 8 equals 0 so -2 over 0 the slope would be -2/0 so you would go down 2 over 0 the line would be streight up and down! if i'm wrong someone tell me!!

Simplify (6 +i)(8 – 3i)

51 – 10i
48 – 32i
45 – 10i
48 – 10i – 3i^2 ...?

Answers

= 48 - 18i + 8i - 3i²
= 48 – 10i – 3i²

Round 89,891 to the nearest ten-thousands place.

Answers

The ten thousands digit is the 8 to the left edge.

You need to increase this digit because the thousands digit is greater than zero.


The answer is 90,000.

Two angles in a triangle are 30° and 35°. What type of angle is the other?

Answers

The third angle is obtuse.
Since the shape has 3 sides, then the total measure of degrees is (n-2)180 = (3-2)180 = 180°.
So our equation would be
180° = 35° + 30° + x°
x = 115°
115 is greater than 90, so the angle is obtuse.
30°+ 35°+ x = 180°
65°+ x = 180°
x = 115°

The third angle is 115°. Because it is greater than 90° it is an obtuse angle.

what is a mathematical statement that two expressions are equal

Answers

It is called an equation.

Find the interest rate needed for an investment of $9,000 to quadruple in 15 years if interest is compounded quarterly. (round your answer to the nearest hundredth of a percentage point.)

Answers

4p=p(1+i/4)^60,,4^1/60=1+i/4...now your turn..solve for i

Annette rode her bike 6.8 miles at a constant rate for 90 minutes. To find how fast she traveled, she solved the equation 6.8= x⋅90. What does x represent?
a)The total distance after x minutes
b)Her speed in miles per minute
c)The amount of time it takes to travel 6.8 miles
d)The number of miles she has traveled so far

Answers

X represents her speed in miles per minute (b). To find her speed she would divide distance by time. If you divide 6.8 miles by 90 minutes and solve for x you will be finding her speed

Answer:

x represents Annette speed in miles per minute. Hence, option b) is correct.

Step-by-step explanation:

Given that Annette rode her bike 6.8 miles at a constant rate for 90 minutes. Also to find how fast she traveled, she solved the equation [tex]6.8=x\times 90[/tex]. Now, we have to tell here what x represents.

As, [tex]Speed=\frac{Distance}{Time}[/tex]

Let speed of bike is x miles/min and given distance is 6.8 miles and at a constant rate for 90 minutes.

∴ [tex]x=\frac{6.8}{90}[/tex]

⇒  [tex]6.8=x\times 90[/tex]

which is the same equation as given.

Here x represents Annette speed in miles per minute. Hence, option b) is correct.

Other Questions
A woman is asked to serve on a jury. Instead of hearing two sides of the case, she only hears from the prosecutors, who ask the jury to decide whether they think someone is probably guilty. The state will only arrest the person and hold a formal trial if the jury feels it would result in a conviction. On which kind of jury is the woman serving?A. a grand jury B. a petit jury C. a bench jury D. a common jury I think the answer is A. A scientist found a hominid fossil that appeared anatomically to be that of Homo habilis. It was found, however, in a rock layer that suggests it is only about 150,000 years old. Based on this, he wants to publish a paper asserting the fossil shows that Homo habilis lived much longer than thought and was contemporary with early Homo sapiens. Which of the following should he do to build a stronger case before he publishes? (2 points) Convince other scientists to support his conclusions about the fossil. Look for evidence of cave paintings at the site where he found the fossil. Find out how old the fossil actually is using radioactive dating. Look for similar fossils in the same rock strata. As Jeremiah looked back through his yearbook pictures, remembering all the fun and hard work of high school, he felt ____________________________ amorous. sentimental. amiable. euphonious. What is the general form of the equation for the given circle?x2 + y2 8x 8y + 23 = 0x2 + y2 8x 8y + 32 = 0x2 + y2 4x 4y + 23 = 0x2 + y2 + 4x + 4y + 9 = 0 in the novel "Tonight i can write" The narrators verse is compared to? Anthony has 36 bats evenly spread between 4 bags. He gave bats to players from one bag. The first player got three bats and the second player got 4 bats. How many bats are remaining in one bag. answer 12 is what % more than 6 Decide if the following sentence is grammatically correct or incorrect. su mama dice "hola". factor the expression. -x^2+3x+40 Which of these accurately reflects a WEAKNESS in the Articles of Confederation? A) Congress taxed citizens too much. B) There was no separation of powers. C) The document was too easily amended by the states. D) The central government held too much power over the states PTG has side lengths of 18 cm, 14 cm, and 16 cm. which type of triangle is PTG? right, obtuse, acute, isosceles When compared to others, how is a greater velocity represented on a motion map?with shorter vectorswith longer vectorswith larger dotswith smaller dots Two acute triangles are similar. Which of the following must the similar triangles have? every pair of sides and angles congruent at least one pair of congruent sides and one pair of congruent angles congruent corresponding angles and proportional side lengths a right angle and a hypotenuse In what ways were eighteenth century American and British societies similar or dissimilar in terms of the rights of individual liberty, equality of opportunity, and property? Explain how science and technology might have worked together to lead to the invention of the refrigerator Which of the following sentences has an error in agreement?Everyone should wear his or her seatbelt while flying.Flies is buzzing over the trash can.Two girls and a boy are here to help deliver the papers.Did Anne or her friend Mary leave her wallet on the table? Factor each completely. 7x^2- 31x-205p-p-18 Factor each completely. 7x^2- 31x-205p-p-18 If is equal to 0.73, then is equal to ______.0.730.500.330.27 A copy machine makes 32 copies per minute. How long does it take to make 120 copies? A boat moves 60 kilometers east from point A to point B. There, it reverses direction and travels another 45 kilometers toward point A. What are the total distance and total displacement of the boat? Steam Workshop Downloader