3 years ago

The simplest form of (a −2 / b −1 +b −2 / a −1 )-1

Mathematics

1 answer:

ss7ja [257]3 years ago

8 0

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Find the 6th term of the arithmetic sequence X – 9, -X – 11, -3.3 – 13, ...

MrMuchimi

Answer:

$-13x-23$

Step-by-step explanation:

Given sequence: $x-9, -x-11, -3x-13$

Therefore,

$a_1=x-9$
$a_2=-x-11$
$a_3=-3x-13$

General form of an arithmetic sequence: $a_n=a+(n-1)d$

(where a is the first term and d is the common difference)

To find the common difference, subtract a term from the next term:

$\begin{aligned}d & =a_2-a_1\\ & =(-x-11)-(x-9)\\ & = -x-11-x+9\\ & = -2x-2\end{aligned}$

Therefore,

$a_n & =(x-9)+(n-1)(-2x-2)$

To find the 6th term, input n = 6 into the equation:

$\begin{aligned}\implies a_6 & =(x-9)+(6-1)(-2x-2)\\ & = (x-9)+7(-2x-2)\\ & = x-9-14x-14\\ & = -13x-23\end{aligned}$

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3 people can build a shed in 8 hours how long would it take 5 people

harkovskaia [24]

Answer:

3howers

Step-by-step explanation:

Step-by-step exaplanation

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3 years ago

A truck driver drives at a constant rate of 60 miles per hour while on the highway. Which equation represents the distance, d, i

lora16 [44]

Answer:

Step-by-step explanation:

this is a rate of time, 60 must be multiplied by the hours to get the days

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2 years ago

HELP me please with 9,10,11,12

vichka [17]

Answer:

9.) The Outlier is 18

-The outlier is the number that stands out and is different

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2 years ago

Help with this picture too

vodka [1.7K]

Answer:

(6x+3)(6x-3)

Step-by-step explanation:

I used FOIL

Multiply the first numbers 6x*6x=36x^2

The outer -18x

Inner 18x which the outer and the inner cross out

Last 3*-3=-9

36x^2 -9

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3 years ago

Read 2 more answers