prove that , a⁴+=47
[tex] \frac{1}{a 4} [/tex]

Answers

Answer 1

Step-by-step explanation:

Wyzant

ALGEBRA 2 ALGEBRA QUESTION

Ahnaf A. asked • 09/16/15

If a+1/a = 4, what is the of a4+1/a4 ?

IF a + 1/a = 4 . Then what is the value of a4 + 1/a4 ?

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Jon P. answered • 09/16/15

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First, notice that (a + 1/a)2 = 42 = 16. But also, (a + 1/a)2 = a2 + 2a(1/a) + 1/a2 = a2 + 2 + 1/a2 = a2 + 1/a2 + 2

So a2 + 1/a2 + 2 = 16, so a2 + 1/a2 = 14.

Now, do that again...

(a2 + 1/a2)2 = 142 = 196, but also (a2 + 1/a2)2 = a4 + 2(a2)(1/a2) + 1/a4 = a4 + 2 + 1/a4 = a4 + 1/a4 + 2

So a4 + 1/a4 + 2 = 196, so a4 + 1/a4 = 194

You can see the pattern... E.g., a8 + 1/a8 = 1942 - 2, etc.

...welcome...


Related Questions

Very urgent!!!!!
The first term of an AP is 6 and the 5th term is 18.find the number of terms in the series having a sum of 162....
With workings
And explanation
Thanks ​

Answers

Answer:

number of terms=9

Step-by-step explanation:

[tex]t_{1}=6\\t_{5}=18\\\\t_{n}=t_{1}+(n-1)d\\18=6+(5-1)d\\18-6=4d\\4d=12\\d=12/4=3\\s_{n}=162\\s_{n}=\frac{n}{2}[2t_{1}+(n-1)d]\\162=\frac{n}{2}[2(6)+(n-1)3]\\162 \times 2=n(12+3n-3)\\324=n(3n+9)\\3n^2+9n-324=0\\n^2+3n-108=0\\n^2+12n-9n-108=0\\n(n+12)-9(n+12)=0\\(n+12)(n-9)=0\\n=-12,9\\n=-12 (rejected)[/tex]

as number of terms can't be negative.

Answer:

PLS MARK BRAINLIEST

Step-by-step explanation:

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

a=6

a+ 4d= 18

6 +4d= 18

4d = 12

d = 3

162= n/2(12+(n -1)3)

324=n(12 + 3n-3)

324=12n + 3n^2 - 3n

3n^2 + 9n-324=0

3n^2+ 36n-27n -324 =0

3n(n+12) -27(n+12)= 0

3n-27 =0; n+ 12=0

n=9 ; n= -12

since n can't be negative n=9

The number of terms is 9

what is the volume of this cylinder with a 5 cm radius and 14cm height

Answers

Answer:

V≈1099.56cm³

Solution:

V=πr2h=π·52·14≈1099.55743cm³

WILL MARK BRAINLIEST!
simplify 4b²−2b+7b−6b+1

Answers

Answer:

=4b^2−b+1

Step-by-step explanation:

4b2+−2b+7b+−6b+1

4b2+−2b+7b+−6b+1=(4b2)+(−2b+7b+−6b)+(1)

=4b^2−b+1

given:

4b²−2b+7b−6b+1

solution:

first combine light terms.

[tex] {4b}^{2} - 2b + 7b - 6b + 1[/tex]

light terms equal:

[tex] - 2b + 7b - 6b[/tex]

let's solve:

[tex] {4b}^{2} - 2b + 7b - 6b + 1[/tex]

[tex] = { 4b}^{2} - b + 1[/tex]

3. You drove 75 miles/hour for 8 hours. How far did you travel?

Answers

Answer:

800

Step-by-step explanation: 75 x 8

10) in a school there are 1500 students. if 60% are boys, find the numbers of boys.​

Answers

Answer:

there are 900 boys in the school

15/100*1500

help please, i don’t understand

Answers

Going sideways:-x = 50° x = 112° x = 119°x = 106°x = 46°x = 118°

Which expression uses the greatest common factor to rewrite 18+6

Answers

Answer:

18+6=24

Step-by-step explanation:

Connie Hamm demonstrates microwave ovens at a home décor center . She is paid $35.00 per demonstration for the first 10 demonstrations and $ 45.00 for each demonstration over 10. Also , for every microwave sold , she earns $ 20.55 . What is Hamm's commission on a day in which she makes 12 demonstrations and 4 sales ?​

Answers

Connie will make $522.20 I believe
$35.00 x 10 = $350
$45.00 x 2 = $90
$20.55 x 4 = $82.20
350+90+82.20 = $522.20

Evaluate f(0) given the following graph

Answers

Answer: 1

Step-by-step explanation:

the equation of the graph will be y = f(x).

f(0) means the the value of y when x = 0, which is 1

or you can view it as where does the graph cuts the y-axis (x=0).

compro una bicicleta y pago en tres cuotas. En el primer tramo pago 3/10 del total, en el segundo pago 4/5 del resto, y en el tercero solo tengo que pagar 21 $. ¿Cuánto cuesta la bicicleta?

Answers

I think the answer would be a

20POINTS Given colon g (x) = StartRoot x minus 4 EndRoot and h (x) = 2 x minus 8. What is g(h(10))?

Answers

h(10) = 2(10) - 8
h(10) = 12
g(12) = root 12 - 4
q(12) = root 8
g(h(10)) = 2 root 2

The value of the function g(h(10)) will be 2√2.

What is a function?

A function is defined as the expression that set up the relationship between the dependent variable and independent variable.

Given that g(x) is √(x-4) and h(x) is 2x - 8. The value of the function g(h(10)) will be calculated as:-

h(x) = 2x - 8

At x = 10 the value of the function h(x) will be:-

h(10) = ( 2 x 10 ) - 8

h(10) = 20 - 8

h(10 ) = 12

Calculate the value of the function g(h(10)):-

g(h(10)) = √(x-4)

g(h(10)) = √(h(10)-4)

g(h(10)) = √( 12 -4 )

g(h(10)) = √( 8 )

g(h(10)) =  2√2.

Therefore, the value of the function g(h(10)) will be 2√2.

To know more about functions follow

https://brainly.com/question/27918659

#SPJ2

I need help on 1,2 and 4

Answers

Answer:

1. 279,936

2. 727

4. 4,096

1: 6 to the 7th power
2: 3 to the 12th power
3: 10 to the 4th power

Which of the following is true?

Answers

Answer:

RT is an altitude of GRS

Step-by-step explanation:

An altitude is an angle that shoots through the tip of a triangle. RT and QRS share that.

[tex]▪▪▪▪▪▪▪▪▪▪▪▪▪  {\huge\mathfrak{Answer}}▪▪▪▪▪▪▪▪▪▪▪▪▪▪[/tex]

The Correct statement is :

RT is an altitude of Triangle QRS

what is an equation of the line in the slope- intersepct is (0,3)

Answers

Answer:

using the formula x/a + y/b =1

a: slope intercept on the x axis

b:slope intersect on the y axis

x/0 + y/3 = 1 (since x/0 is undefined ,the slope doesn't exist and it is impossible for a slope to be linear)

Pls Answer 15 Points ​

Answers

Answer:

edchnailedhaefihw

Step-by-step explanation:

ueswufia72826382q 8r20224

On a cold day, the temperature in a certain city changed −23.8°F over 6.8 hours. What was the average change in temperature per hour? Enter your answer as a decimal in the box.

Answers

Answer:

-2.5 :3

Degrees Farenheit!

Step-by-step explanation:

k12

hope this helped!

Please give me the crown.

~Happy Helper~

Based on the temperature change and the amount of time it did so, the average change in temperature per hour is -3.5°F.

The average change in temperature per hour can be found by:

= Temperature change / Number of hours

Solving would give:

= -23.8 / 6.8

= -3.5°F

We can therefore conclude that in every hour of this cold day, the temperature changed by an average of -3.5°F.

Find out more at https://brainly.com/question/17569569.

Liz is shopping for a game system. Two competing stores offer deals on the system that she wants to purchase.

Where should Liz shop? Show all of your work and explain your reasoning.

Answers

Answer:

Liz should shop at the store with the item with a reasoning price in other words the one that costs less.

Step-by-step explanation:

You didn't give the stores prices but that would be what I would think.

For my Homework tomorrow

Answers

A jumping dolphin good luck

Simplify 11 square root 1215

Answers

Answer:383.4

Step-by-step explanation:

Answer:

383.425351275

Step-by-step explanation:

28. A factory makes rugs at a constant rate of 10 rugs every 4 hours. Which statement is true?

Answers

Not sure what the statements are but the most probable answer would be the factory makes 2.5 rugs every hour. Please give me a brainliest if you found this helpful:)

how can you solve this problem? 3x + 14 = 59. solve for x.​

Answers

Answer:

x = 15

Step-by-step explanation:

3x + 14 = 59

subtract 14 from both sides

3x = 45

divide both sides by 3

x = 15

Answer:

15

Step-by-step explanation

Subtract 14 from both sides and the do 45 divided by 3 and it gives you your answer 15

What is the angle measure for

Answers

Answer:

x = 6

∠PQR = 29

Step-by-step explanation:

Sum of interior angles in a triangle is 180,

15x - 4 + 4x + 5 + 65 = 180

15x + 4x + 5 - 4 + 65 = 180

19x + 1 + 65 = 180

19x + 66 = 180

19x = 180 - 66

19x = 114

x = 114 / 19

x = 6

∠PQR = 4x + 5

Substitute x = 6,

∠PQR = 4 ( 6 ) + 5

          = 24 + 5

∠PQR = 29

Với n là số tự nhiêm, xét đinh lí " nếu n là số tự nhiên lẻ, thì n^2-1 chia hết cho 8". Định lí trên được viết dưới dạng P->Q
a. hãy xác định mệnh đề P và Q
b. Phát biểu định lý trên bằng cách sử dụng điều kiện cần

Answers

Answer:

Ewan

Step-by-step explanation:

ewan ko na po sorry po at

kasi hindi kopo maintindihan

tapus hindi naman po ako

magaling

Beth is taking pictures outdoors during the evening. She knows that the later it is when she takes a picture, the longer her camera's shutter has to stay open to get enough light for the picture. O A. The length of time the shutter needs to stay open is a function of how late in the evening it is. O B. The length of time the shutter needs to stay open is a function of how strong her flash is. O c. How late it is in the evening is a function of the length of time the shutter needs to stay open.​

Answers

Answer:

c. how late it is in the evening is a function of the length of time the shutter needs to stay open.

Answer:

I think the answer is letter B. The length of time the shutter needs to stay open is a function of how strong her flash is.

Anybody help with the question, please?

Write the equation for a parabola translated horizontally 5 units to the left.

Answers

Can you add more information please

A teacher gave a test with 50 questions, each worth the same number of points. Donovan got 39 out of 50 questions right. Marci's score was 10 percentage points higher than Donovan's. How many more questions did Marci answer correctly?

Answers

Answer:

49 all you have to do is add 10 to 39

2.5 lb; ounces
I need steps by steps

Answers

Answer:

2.5 lbs = 40 Ounces

Step-by-step explanation:

Conversion factor: 1 lb = 16 oz

1) Ounce = Pound * 16

2) Ounce = 2.5 * 16

3) Ounce = 40

6-x-3=4x+12 solve for x

Answers

Answer: x =-9/5

Step-by-step explanation:

It snowed 9.33 inches on Monday and 0.66 inches on Tuesday. How much did it snow on
Monday and Tuesday combined?

Answers

9.33 +

0.66

9.99

It snowed 9.99 inches on Monday and Tuesday combined

What is 1+1?
Thought since there doesn’t seem to be any big point questions, I’d give some to ya’ll.

Answers

Answer: 2

Step-by-step explanation: Thank you

Answer:

The answer is 2

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