X+ 1/x =5 what is the value x²+1/x²?

Answers

Answer 1
Answer: x+ 1/x= 5
⇒ (x+ 1/x)^2= 5^2
⇒ (x+ 1/x)^2= 25
⇒ x^2+ 2(x)(1/x)+ 1/x^2= 25
⇒ (x^2+ 1/x^2)+ 2*1= 25
⇒ x^2+ 1/x^2= 25 -2
⇒ x^2+ 1/x^2= 23

The final answer is 23~

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Combine like terms. 14z – 27z

A. 41z
B. –13z2
C. 13
D. -13z

Answers

Hello, 

14z - 27z = - 13z 

Have a nice day
D. -13z is the correct answer...since both values have z the you can simply subtract 27 from 14. Hope this helps and, if you are able to do so, please mark Brainliest!

(3-2x) divided by (1 divided by x+5) multiplied by 8

Answers

Answer: 8(3-2x)(x+5), -16x^2-56+120, x=-5, or x=3/2.


Step-by-step explanation:

First convert the multi fraction into multiplication: 8(3-2x)(x+5)

Then simplify: -16x^2-56+120

If you want, you can solve for x, which gets you x=-5, or x=3/2.

I hope this helps! :P

Which number line represents the solution of 4 - 3x > 13?

Answers

Answer:

x<-3

Step-by-step explanation:

  • given, 4 - 3x > 13

adding 3x on both sides,

4>13+3x

subtracting 13 from both sides,

4-13>3x

-9>3x

dividing both the sides by 3,

-3>x

therefore solution: x<-3

  • the required graph is shown in the attachment
  • so any x value lesser than -3 satisfies the inequality. [ y can be any value]
  • since you have asked about which number line, take y=0 and then it will be x-axis with values lesser than -3. this is the required number line.

Which options could be the next step in simplifying this expression?5 • (2 + 4)

Choose exactly two answers that are correct.

A.
(5 • 2) + 4 (use the associative property)

B.
5 • 2 + 4 (use the distributive property)

C.
5 • 6 (use order of operations)

D.
5 • 2 + 5 • 4 (use the distributive property)

Answers

C and D
5·(2+4) is 30, because u need to add parenthesis first. 2+4 is 6
6·5 is 30.
C is 5·6 and that is 30
D is 5·2 which is 10, then 5·4 which is 20. 10+ 20 is 30.
:)

What is the scale factor for the set of similar figures.

Answers

You just put the dimensions over each other
either the small or the big dimension on the numerator

(7)/(20) or (20)/(7)
The first one is more applicable

Find the least common multiple of 10 , 15 , and 3

Answers

3 = 3
10=2 x 5
15=. 5 x 3
lcm=2x5x3=30