I need help ASAP PLEASE
What is the sum of the first 47 terms of the sequence?
-215,-201,-187,-173,...

Answers

Answer 1

Answer:

5029

Step-by-step explanation:

There is a common difference between consecutive terms, that is

d = - 201 - (- 215) = - 187 - (- 201) = - 173 - (- 187) = 14

This indicates the sequence is arithmetic with sum to n term

[tex]S_{n}[/tex] = [tex]\frac{n}{2}[/tex] [ 2a₁ + (n - 1)d ]

where a₁ is the first term and d the common difference

Here a₁ = - 215 and d = 14 , then

[tex]S_{47}[/tex] = [tex]\frac{47}{2}[/tex] [ (2 × - 215) + (46 × 14) ]

     = 23.5 (- 430 + 644)

    = 23.5 × 214

    = 5029


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Evaluate 25^3 -75^3 + 50^3

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Answer:

Step-by-step explanation:

4x+2y=−14 y=−2x−6
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Answer:

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Step-by-step explanation:

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Step-by-step explanation:

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Step-by-step explanation:

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Step-by-step explanation:

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Answer:

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Answers

Answer:

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Step-by-step explanation:

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Step-by-step explanation:

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C, I hope this helped!

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Step-by-step explanation:

2 questions  

Answer:

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Step-by-step explanation:

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Step-by-step explanation:

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Answers

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Answer:

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Step-by-step explanation:

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Answer:

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Step-by-step explanation:

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Answer:

Step-by-step explanation:

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Step-by-step explanation:

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A semicircle with a diameter
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B............................................:::/::::/:::::::

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Answer:

99999

Step-by-step explanation:

To find : The Greatest 5 digit number exactly divisible by 9,12,15,18 and 24? Solution : The greatest 5-digit number is 99999.

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Which is closest to the height of the building?
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Answers

Answer:

[tex]let \: it \: be \: x \\ \cos(70 \degree) = \frac{12}{x} \\ x = \frac{12}{ \cos(70 \degree) } \\ x = 35.1 \: ft[/tex]

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1.

For which value of x is the row in the table of values incorrect? The function is the quadratic function y = 5x2.


A. x = 3

B. x = 2

C. x = 0

D. x = 5

Answers

Answer:

A. x = 3

Step-by-step explanation:

0 times 5 = 0

2 times 5 = 10

3 times 5 = 15 then its 75

5 times 5 = 25 then its 125

it never equals to 45 for 3

you have to do it to the power of 2 for 3 and 5

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Answer:

b^-6+11

b^5

Step-by-step explanation:

answer to your question is b^5

what do u add to 5 5/8 to make 9 ?

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Answer:

5+5=9and mark me as brainlestttt

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27/8

Step-by-step explanation:

9 - 5 5/8 = 27/8

Let t = 4 and u = 6 + 2i. Find t – u

Answers

Step-by-step explanation:

t = 4

u = 6 + 2

Find t - u

solu

t - u

= 4 - ( 6 + 2 ) = 4 - 8

Answer is -4

The value of t-u is -2(1+i).

What is a complex number?

The complex number is basically the combination of a real number and an imaginary number.

How to subtract two complex number?

For the subtraction of two complex numbers we subtract real part from the real and imaginary from imaginary.

According to the given question.

We have two complex numbers

t = 4 + 0i and u = 6 + 2i

Therefore,

[tex]t - u = 4+ 0i - ( 6 + 2i)[/tex]

⇒[tex]t - u = 4 + 0i - 6 - 2i[/tex]

⇒[tex]t - u = -2 -2i[/tex]

⇒[tex]t - u = -2(1+i)[/tex]

Hence, t - u = -2(1 + i).

Find out more information about complex numbers here:

https://brainly.com/question/10251853

#SPJ2

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