Find the exact sum of the arithmetic series

6+3.8+⋯−29.2

Answers

Answer 1

Answer:

-197.2

Step-by-step explanation:

Since it is arithmetic series, first find the difference d between the two know series.

3.8 - 6 = - 2.2

d = -2.2

a = 6

Tn = -29.2

Looking for the n term, use the linear method.

Tn = a+( n - 1)d

Substitute all the parameters

-29.2 = 6+( n - 1 ) -2.2

-29.2 = 6 - 2.2n + 2.2

- 29.2 = 8.2 - 2.2n

-29.2 - 8.2 = - 2.2n

-37.4 = -2.2n

n = 37.4/ 2.2

n = 17 terms.

To Find the exact sum of the arithmetic series, use the sum formula below

Sm = n/2( 2a + (n - 1)d)

Sm = 17/2( 2 × 6 + ( 17 - 1 ) -2.2

Sm = 17/2(12 - 35.2)

Sm = 8.5( - 23.2)

Sm = - 197.2

Therefore, the exact sum of the arithmetic series is -197.2


Related Questions

Which number line shows the inequality n < -3?

Answers

Answer: like he dark line represents all the numbers that satisfy x≤2 . If we pick any number on the dark line and plug it in for x, the inequality will be true. The following graph represents the inequality x < 2 . Note that the open circle on 2 shows that 2 is not a solution to x < 2 .

Step-by-step explanation:

solve 3 ^x/2 * 3^x/4= 3^6​

Answers

Answer:

i think this is it

Step-by-step explanation:

Which is the product of 4^4(4^-7)(4)?

Answers

Answer:

1/16 or 0.0625

Step-by-step explanation:

we can take 4 outside the parentheses and we would get 4^(4-7+1)=4^(-2)= 1/(4^2)=1/16=0.0625.

Answer:

0.0625

Step-by-step explanation:

[tex]4^{4}[/tex] ( [tex]4^{-7}[/tex] ) (4)

First lets deal with 4^4 which is 256 (4 * 4 * 4 * 4)

256 ( [tex]4^{-7}[/tex] ) (4 )

Then 4^-7 which is [tex]\frac{1}{16384}[/tex] ( this is because when 4^-7 is simplified it becomes 1/4^7 which is 1/16384.

256 ( [tex]\frac{1}{16384}[/tex]) (4)

256 * [tex]\frac{1}{16384}[/tex] * 4= 0.0625

HOPE THIS HELPED

The figure below is a rectangle. What is the value of x?

Answers

Answer:

1.8

Step-by-step explanation:

[tex]2x + 10 = 12x + - 8 \\ 10x = 18 \\ x = 1.8 \\ [/tex]

Answer:

1.8

Step-by-step explanation:

12x-8=2(x+5)

12x-8=2x+10

10x=18

x=1.8

helppp math sucksss

Answers

Answer:

H can't be a function.

Step-by-step explanation:

If x has more than one y then it doesn't pass the vertical line test and is not a function.

Simplify the following expression 3(4x+5)+2

Answers

Answer:

12x+17

Step-by-step explanation:

3(4x+5)+2

12x+15+2

12x+17

ANSWER:

12x+17=y

Step-by-step explanation:

12x+15+2

12x+17

Brainliest user, virtuoso, and 700+ points in three days? I think i'm pretty smart. Do you think so? Also, please solve for x, 2x-30+2 and explain.

Answers

Hey there!

[tex]Answer:\boxed{2x-28}[/tex]

[tex]Explanation:[/tex]

[tex]2x-30+2[/tex]

Let's start off by simplifying.

[tex]2x+-30+2[/tex]

Now let's combine like terms.

[tex]2x+-30+2\\(2x)+(-30+2)\\2x+-28\\2x-28[/tex]

[tex]\boxed{2x-28}\text{ is your answer.}[/tex]

Hope this helps!

[tex]\text{-TestedHyperr}[/tex]

Evaluate
5-(x - 2) for x = - 1

Answers

step 1 - since x is equal to - 1 we can substitute negative one in place of x

5 - ( x - 2 )

substitute -

5 - ( -1 -2 )

step 2 - now solve

first solve the bracket

5 - ( - 1 - 2 )

therefore,

5 - ( - 3 )

solve

= 8

so the answer is 8

hope that helps !

Are 12/16 and 6/9 equivalent? Explain your answer.

Answers

Answer:

No

Step-by-step explanation:

Times the numerator and denominator by 2. 6 does turn into 12, but 9 doesn't turn into 16. Therefore, these fractions are not equivalent.


what is the value of x in 36/45 = x/5​

Answers

Answer:

x = 4

Step-by-step explanation:

Cancel common factor of 9,

(x/5)=(4/5)

Multiply both sides by 5,

(5x/5)=(20/5)

Simplify to get x = 4

Question 5 Rocko paid $12.50 for 25 game tickets. Louisa paid $17.50 for 35 game tickets. What is the constant of proportionality? Express your answer in decimal form.

Answers

Answer: k = $0.50

Step-by-step explanation:

The data that we have is:

Rocko paid: $12.50 for 25 tickets.

Louisa paid: $17.50 for 35 tickets.

Now, the question asks to find the constant of proportionality.

A proportional relation can be written as:

y = k*x

where k is the constant, and in this case, y is the price and x the number of tickets bought.

Then replacing with the values above, we have:

$12.50 = k*25

then:

k = $12.50/25 = $0.50

And the other data:

$17.50 = k*35

K = $17.50/35 = $0.50

So we have the same k in both cases, this means that the constant of proportionality is k = $0.50

Point R is on line segment QS. Given QS = 16 and QR = 9, determine the length RS.

Answers

Answer:

The length RS = 7

Step-by-step explanation:

Here, we are interested in determining the length of RS

Let’s have the line segment arranged as follows;

Q R S

where QR = 9 and QS = 16

From the arrangement, we can deduce that;

QS = QR + RS

Thus;

RS = QS - QR

RS = 16 -9

RS = 7

Let f(x) = 16 - x^2, g(x) = 4 - x. Find (fg)(x) and its domain.

Answers

Answer:

(fg)(x) = x^3-4x^2-16x+64, D: All Real Numbers

Step-by-step explanation:

(fg)(x) = f(x) x g(x)

= 16-x^2(4-x)

=64-16x-4x+x^3

(fg)(x) = x^3-4x^2-16x+64

Domain is all real numbers because you can substitute any real number for x and the function would still work.

Thus the value of [tex](fg)(x) = x^3 -4x^2 -16x -64[/tex] , and the domain is a set of real numbers.

The domain is a set of all real numbers because by substituting any value in the equation we only get real numbers.

The function is defined as a relationship between two variables a dependent and an independent variable. A function consists of a domain and a co-domain.  The set of codomains is called a range.

      Example : [tex]f(x) = 4x+ 3[/tex]

All those values of a set for which a function is defined are called a domain.

According to the question :

[tex]f(x) = 16 - x^2\\ g(x) = 4 - x.[/tex]

[tex](fg)(x) = (16- x^2) (4-x)\\(fg)(x) = [16(4-x) -x^2(4- x)]\\\(fg)(x) = [64- 16x -4x^2+x^3]\\(fg)(x) = x^3 -4x^2 -16 x -64[/tex]

Thus the value of [tex](fg)(x) = x^3 -4x^2-16x-64.[/tex]

Learn more about function here :

https://brainly.com/question/30721594

# SPJ2

Solve the equation below for h v=πr^2h

Answers

Answer:

The answer is

[tex]h = \frac{v}{πr²} [/tex]

Step-by-step explanation:

v = πr²h

To solve for h divide both sides by πr²

That's

[tex] \frac{v}{πr²} = \frac{πr²h}{πr²} [/tex]

We have the final answer as

[tex]h = \frac{v}{πr²} [/tex]

Hope this helps you

Answer: h=0hr/2−3.141593r2+v

Step-by-step explanation:Hope this help

How do you write the converse of a conditional? How do you Write the contrapositive of a conditional?

Answers

Answer:

Converse- If q, then p. Contrapositive- If not p, then not q

Step-by-step explanation:

Let's say your conditional is if an angle is 90 degrees then it is a right angle.

Then the converse is, if an angle is a right angle then it is 90 degrees.

Finally, the contrapositive is if an angle is not 90 degrees then it is not a right angle.

When x is added to its square, the total is 30. Fond the value of x.
(With solution please)

Answers

Answer:

[tex]x=\frac{30}{(1+x)}[/tex]

Step-by-step explanation:

step one:

This is a word problem, we need to translate is it to mathematical terms before we solve

"When x is added to its square, the total is 30"

step two:

[tex]x+x^2=30[/tex]

[tex]x+x^2=30\\\\x(1+x)=30\\\\[/tex]

step three:

divide both sides by 1+x we have the value of x as

[tex]x=\frac{30}{(1+x)}[/tex]

180 miles /2hours find the unit rate in feet per second ​

Answers

Answer:

132 ft per second

Step-by-step explanation:

180 miles in 2 hours

180 miles = 950400 ft.

2 hours = 7,200 secs.

950400 ft in 7,200 secs

–7 – (x + 3) = 12
solve for x

Answers

Answer:

Step-by-step explanation:

-7 -x - 3 = 12

-x - 10 = 12

-x = 22

x = -22

g(x) = 2x^2 + x-1, find f(3)

Answers

Answer:

the answer is 20

Hope it helps

(4.5+3 5/6 )·0.6 HELP ME PLEASE

Answers

Answer:

5

Step-by-step explanation:

Answer:

8.33333333333

Step-by-step explanation:

Which rule would indicate a transformation that is a rotation? *

1 point

A.(x, y) becomes (-x, -y)

B. (x, y) becomes (-x, y)

C. (x, y) becomes (x, -y)

D.(x, y) becomes (y, x)

Answers

A . (x,y) becomes (-x,-y)

Find the circumference of the circle. Round your answer to two decimal places, if necessary.

Answers

Use the Circumference of a Circle Formula:

C = 2πr

or

C = (Diameter)*π    (since diameter = 2*radius)

In this case, the diameter is 44 miles

So the circumference is:

C = 44*π = 138.23 miles

Which of the following numbers is divisible by 3 and 7?
O 396
O 399
O 402
O 405

Answers

b because it’s b good luck

Answer:

399

Step-by-step explanation:

396 is divisible by 3, but not 7.

399 is divisible by 3, and 7.

402 is divisible by 3, but not 7.

405 is divisible by 3, but not 7.

f(x) = 3x + 12x - 5​

Answers

Answer:

Step-by-step explanation:

Hey There!! ~ (。^▽^)

The answer to this is: [tex](- 2, - 7)[/tex]

Explanation: [tex]3x^{2} + 12x 5[/tex]

[tex]y = 3( x + 2)^{2} - 7[/tex]

  [tex]3( x + 2) ^{2} - 7[/tex]

[tex]a = 3[/tex]

[tex]h = 2 \ - 7[/tex]

[tex]k = - 7[/tex]

Hope It Helped!~

Good Luck With Your Assignment~

[tex]UsedLess[/tex]~

Determine if the square root is a rational or irrational number. Answer as R for rational and I for
irrational

Answers

Answer:

1- it is irrational

2- it is rational

Question 3 of 10 Katerina is making picture frames of various widths for 5x7 photos. The diagram below shows what his picture frames look like. The colored rectangle is the frame with a width of 2 inches on all sides, the inner rectangle is the space for the picture. The polynomial expression 4x2 + 242 + 35 will calculate the total area of the frame and picture together for any value of L. What is the leading coefficient of this polynomial expression?​

Answers

Answer:

leading co-efficent is 4

In a rectangle, the sides have measurements of 2x + 1 and 3x - 5 units Find an expression for the area of the rectangle, in square units.​

Answers

Answer:

[tex] (6 {x}^{2} - 7x - 5) \: {units}^{2} [/tex]

Step-by-step explanation:

Area of rectangle = Product of sides

[tex] = (2x + 1) \times (3x - 5) \\ = 2x(3x - 5) + 1(3x - 5) \\ = 6 {x}^{2} - 10x + 3x - 5 \\ area \: of \: rectangle \: \\ = (6 {x}^{2} - 7x - 5) \: {units}^{2} [/tex]

Write the mixed number as a decimal. 83/5

Answers

Answer:

Write the mixed number as a decimal. 83/5

16.6

Tammy wants to burn a total of 300 calories. So far, she has burned 289.3 calories. How many more calories must Tammy burn?

Answers

Answer:

10.7

Step-by-step explanation:

300 - 289.3 = 10.7 calories.

Answer:10.70

Step by step explanation

300-289.3=10.70

If Sara had 5 apples and she ate 3 how many would Sara have?

Answers

Answer:

2

Step-by-step explanation:

5-3=2

Answer:

Sara would have 2 apples left

Step-by-step explanation:

5-3=2

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