Q16. Find x^2 + 1/x^2 , if x + 1/x = 3

Answers

Answer 1

Answer:

[tex] 2 \times x \times \frac{1}{x} = 2 \\ {x}^{2} + {y }^{2} + 2xy = {(x + y)}^{2} \\ {x}^{2} + \frac{1}{ {x}^{2} } + 2 = {(x + \frac{1}{x} })^{2} = {3}^{2} = 9[/tex]


Related Questions

pls answer this real answers if its right ill give brainliest

Answers

Answer: 7.5 batches

Step-by-step explanation:

60/6 is 10, so she needs to make 10 batches in total.

10-2.5=7.5

Answer:

no. of muffins = 60 muffins

no of muffins in each batch = 6 muffins

no. of batches which got over = 2.5 batches

no. of muffins baked = 6 * 2.5 = 15

no. of muffins to be baked = 60 - 15 = 45

no. of batches required to bake 45 muffins = 45 / 6 = 7.5

hope this answer helps you!

please mark as brainliest... thank you!

                                 

find the value of tan30+cot30+sin60​

Answers

Hello!

This is a problem about relating values of the Unit Circle.

First, we need to figure out the specific "points" of each angle measure of 30 and 60.

For the angle measure 30, the point will be [tex](\frac{\sqrt{3}}{2},\frac{1}{2})[/tex].

For the angle measure 60, the point will be [tex](\frac{1}{2},\frac{\sqrt{3}}{2})[/tex].

The tangent value of a point will be its [tex]y[/tex] value over its [tex]x[/tex] value.

[tex]\frac{\frac{1}{2}}{\frac{\sqrt{3}}{2}}=\frac{1}{2}*\frac{2}{\sqrt{3}}=\frac{1}{\sqrt{3}}=\frac{\sqrt{3}}{3}[/tex]

The cotangent value of a point will be the reciprocal of the tangent value, which we found previously.

[tex]\frac{3}{\sqrt{3}}=\frac{3\sqrt{3}}{3}=\sqrt{3}[/tex]

The sine value of a point will be the [tex]y[/tex] value of the point.

[tex]\frac{\sqrt{3}}{2}[/tex]

So the values we have so far are [tex]\frac{\sqrt{3}}{3}+\sqrt{3}+\frac{\sqrt{3}}{2}[/tex]

Now we have to find the LCD to add these together, which in this case would be 6.

[tex]\frac{2\sqrt{3}}{6}+\frac{6\sqrt{3}}{6}+\frac{3\sqrt{3}}{6}[/tex]

Which adds up to [tex]\frac{11\sqrt{3}}{6}[/tex], which is in simplest radical form.

Hope this helps!

The answer to my question is
For number 13. x^3+7x^2-9x-63
For number14. 18x (x-4)
BUT SOMEONE SHOW WORK PLS FOR BRAINLYY :)))

Answers

Answer:

each colour represents what i’m multiplying

Step-by-step explanation:

hope this helps

Please help! If you do you will get 'Brainliest'

Answers

Answer:

A) 5/7

Step-by-step explanation:

Equation:

-0.7n = -0.5

n = 5/7

simplify (2+3)squared-16 divided by 2

Answers

Answer:

it would be 4.5

Step-by-step explanation:

basic explantion

step 1.    3+2 =5

step 2     5x5=25

step 3      25-16=9

step 4       9 divde by 2= 4.5

simplifyed it would be  25-16 ÷ 2

more deatialed explanation.

I added 3+2 to get 5 and i sqaured the 5 to get 25 becasue 5x5 is 25 then i took away 16 and got 9 then i divde 9 by 2 to get 4.5.  hope this helped!

which answer is the simplest form of the expression.

Answers

Answer:

yellow box

Step-by-step explanation:

Answer:

c or the orange option. m^2n/2

Step-by-step explanation:

i hope this helps :)

WHICH OF THE FOLLOWING CAN BE SUBSTITUDED FOR Y TO MAKE THE EQUANITIY TRUE 24>6+3Y

Answers

Answer:

Step-by-step explanation:

3Y+6<24

3Y<18

Y<6

Y can be any number/integer that is less than 6.

What is the length of the outside of a circle called

Answers

Answer:

The distance around a circle on the other hand is called the circumference (c).

Step-by-step explanation:

A straight line that passes from one side of a circle to the other through the center is called the diameter. The distance around the outside of a circle is called the circumference. All points on the edge of a circle are the same distance to the center.

The length of the outside of a circle is called the "circumference."

The circumference is the total distance around the outer boundary of the circle.

The distance cover while completing one full lap around the track is equivalent to the circumference of the circle.

The formula to calculate the circumference (C) of a circle is:

C = πd

where π (pi) is a mathematical constant equal to 3.14159, and d represents the diameter of the circle.

The formula for circumference in terms of the radius is:

C = 2πr

Learn more about Circumference of circle here:

https://brainly.com/question/17130827

#SPJ6

The figure shown is made up of a triangle and a square. The perimeter of the figure is 56 inches. Complete
the description to find the area of the figure.
10 in.
8 in.
10 in.
The total length of three sides of the square is in., so the side length of the square is
in. The area of the triangle is in?, and the area of the square is in?, so the total area is

Answers

Image of figure is missing so i have attached it.

Answer:

The total length of three sides of the square = 36 in

Side length of square = 12 in

A_triangle = 48 in²

Area of square = 144 in²

Total area of figure = 192 in²

Step-by-step explanation:

Total perimeter = 56 inches

Let the side of the square be s.

Thus, perimeter of the 3 sides of the square = 3s

Therefore, adding all the external sides of the figure, we have;

3s + 10 + 10 = 56

3s + 20 = 56

3s = 56 - 20

3s = 36

s = 36/3

s = 12

Area of triangle is given by the formula;

A_triangle = ½bh

Where;

b is base

h is height

Thus;

A_triangle = ½ × 12 × 8

A_triangle = 48 in²

Area of square = 12 × 12 = 144 in²

Total area of figure = 144 + 48 = 192 in²

A block is pulled 0.9 m to the right in 2.5 seconds. What is the blocks average speed?

Answers

Answer:

Step-by-step explanation:

speed=distance /time=0.9/2.5=90/25=3.6 m/s

yall i need help rn please

Answers

Answer:

D

Step-by-step explanation:

Answer:

D

Step-by-step explanation:

If y = 1/2x, then y will always be half of x.

some body helpme pls 4

Answers

1. 10

2. -1

Step-by-step explanation:

I was taught when there's two minus signs squish then together into a big plus sign. and go on from there

Answer:

Step-by-step explanation:

4-(-6)= 10

-3-(-2)= -5

first one that gets it correctly gets branlyest

Answers

Answer:

200 in2

Step-by-step explanation:

diameter= 15 in. so raduis = 15/2

area of circle = πr2

= 22/7 * 15/2 *15/2

= 176.79

rounding to the nearest 100, its 200 in2

Write the ratio as a fraction in the simplest form. 3 2/5 to 1 4/5 2 4 3 / to 1 / 5 5

Answers

Answer:

a) 17/9

b) 25/39

Step-by-step explanation:

a)  3 2/5 to 1 4/5

17/5 to 9/5

The ration of fractions is 17/5 / 9/5  = 17/9

b) 2 4 /3  to 1 / 5 5

10/3 to 26/5

25/39

The six sides of a number cube are labeled 1,2,3,4,5, and 6. You flip a coin and roll the number cube. What is the theoretical probability that the coin lands on tails and you roll a number less than 3?

Answers

Answer:

1/6

Step-by-step explanation:

P(tails, # LT 3) = 1/2 x 2/6  =  1/2 x 1/3

This equilateral triangle has side lengths of 6 inches and a height of approximately 5 inches. Find the area, given these dimensions.​

Answers

To find the area of a triangle we use this equation:

[tex]\frac{1}{2} bh\\[/tex]

b= base

h= height

So since we are given the information that the sides are 6 and the height is 5 we simply can plug the information right into the equation:

[tex]\frac{(6)(5)}{2}[/tex]= 15

So the are is 15 inches sqaured, hope this helps :)

restaurant bill:$175 with a 20% tip what will the be the amount of tip​

Answers

Answer:

$35.00

Step-by-step explanation:

175 x .20=35

35......................

(175x.20=35)

Can someone please help me :) ❗❗❗❗❗​

Answers

Answer:

the third option

Step-by-step explanation:

when X is negative f(x) is positive. and when f(x) is negative x is positive

what is the solution to the systems of equations? equations - 3x-y= -17 , x-y= -13​

Answers

Answer:

x=1 y=14

multiply x-y=-13 by 3 so the x would cancel out. solve for y

then plug in y to one of the equations to get x

Answer: the answer is x= -2 , y=11

Step-by-step explanation:

First

1: we have to find the answer for x in x-y= -13

2: add y on both sides of the equation

3: we will get x= -13+y

Second

1: Substitute x in 3x-y= -17 with x=-13+y

2: then you will get 3(-13+y)-y= -17

3: multiply 3 with -13 and y

4: you will get -39+3y-y =-17

5: add 3y and -y

6: you will get -39+2y= -17

7: add 39 on both sides of the equation

8: you will get 2y=22

9: divide 2 on both sides

10: you will get y= 11

Third

1: plug 11 for y in x= -13+y

2:  then you will get x= -13+11

3:  you will x= -2

So x= -2 and y= 11

5/8 - 2/9 × 3/8 fraction simplify quick please
We had a revision and I forgot can you help me ​

Answers

Answer:

ans is 13/25

Step-by-step explanation:

hope it helps!!!

Put these numbers in order from least to greatest.

1/2 1/3 2/5 0.6 0.3

Least


Greatest

Answers

0.6, 0.3 2/5, 1/3 1/2 ( I believe)

Step-by-step explanation:

good luck !!!

Solve:3x+3y=27 and its algebra

Answers

Answer:  X=9-y

Step-by-step explanation:

Answer:

x = 9 - y

y = 9 - x

Step-by-step explanation:

Solving for X:

[tex]3(x + y) = 27[/tex]

[tex]x + y = \frac{27}{3} [/tex]

[tex]x + y = 9[/tex]

[tex]x = 9 - y[/tex]

Solving for Y:

[tex]3(x + y) = 27[/tex]

[tex]x + y = \frac{27}{3} [/tex]

[tex]x + y = 9[/tex]

[tex]y= 9 - x[/tex]

Hence, the answer for x is x = 9 - y and the answer for y is y = 9 - x.

Find the domain and range, and is it a function?

Answers

5) it is a function because each x value only has one y value. Domain: (-infinity,infinity) range: [0,infinity)
6) it is a function. Domain: (-infinity, infinity) Range: [3,3]
7) it is a function. Domain: (-infinity, infinity) range: (-infinity, infinity)
8) it is a function. Domain: [0, infinity) range: [0, infinity)

HELP PLEASE!!
ABCD is rotated counterclockwise about the origin. By how many degrees was ABCD rotated?

Answers

ABCD rotated 180 degrees

Answer:

180 degrees

Step-by-step explanation:

The perimeter of a square is given as 8x+20 expression

Answers

Answer:

wow that hard even i dont know how to do that

Step-by-step explanation:

sorry

If tan 0=5/12 and sin 0>0, then cos 0=?
A -5/13
B 12/13
C 13/12
D -12/13

Answers

Answer:

B. 12/13

Step-by-step explanation:

Hypotenuse= [tex]\sqrt{(5)^{2}+12^{2} } \\[/tex]

hypotenuse=13

opposite= 5

adjacent= 12

Cosine= adjacent/hypotenuse

cosine= 12/13

can someone help me

Answers

Answer:

the first one....

6=w+2.

According to the US Census, the percent of residents aged 65 or older in the 50
states and District of Columbia has mean 13.26% and standard deviation of
1.67%. Find and interpret the standardized scoreſfor the state of Colorado, which
had 9.7% of residents age 65 or older. *

Answers

Answer:

z = -2.13

Therefore, the standardized z score for the state of Colorado means the score is below the mean.

Step-by-step explanation:

The formula for z score is given as:

z = (x-μ)/σ,

where

x is the raw score = 9.7%

μ is the population mean = 13.26%

σ is the population standard deviation = 1.67%

z = z score or standardize score

Hence,

z = 9.7 - 13.26/1.67

z = -2.13174

Approximately z = -2.13

Therefore, the standardized z score for the state of Colorado means the score is below the mean

HELP! WILL MARK AS BRAINLIEST! PLEASE INCLUDE THE CALCULATION (MATHEMATIC FORM 1 // BASIC ALGEBRA) pls answer 4 question above TYSM!!!​

Answers

Answer:

a) 3p

c) 2

3) [tex]ab^{2}[/tex]

Sorry if these answers are short, I just wanted to finish this problem then rest

PLEASE HELP. I will mark branliest

Answers

Answer:

28

Step-by-step explanation:

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