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

guys pls help me!!!!!!!

Answers

Answer:

[tex](6r - 3) \degree = 45\degree \\ 6r = 45 + 3 \\ 6r = 48 \\ r = \frac{48}{6} \\ \therefore \: r = 8 \\test \: 6(8) - 3 = 48 - 3 = 45\degree[/tex]

help meeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee

Answers

Answer:

16

Step-by-step explanation:

2x2x2x2= 16

Lucy is saving money to buy a game. So far she has saved $12 , which is two-thirds of the total cost of the game. How much does the game cost?

Answers

Answer:

18$

Step-by-step explanation:

Question: All of the following trigonometric functions have the same value except

Answers: Pick one.
cos180°
sin270°
tan90°

Answers

Answer:

[tex]\tan{90^{\circ}}[/tex]

Step-by-step explanation:

Because [tex]\cos{x}[/tex] and [tex]\sin{x}[/tex] are defined for all [tex]x[/tex](i.e. their domain is [tex](-\infty, \infty)[/tex]), so they can never be undefined. However, [tex]\tan{90}=\sin{90}/\cos{90}=\sin{90}/0[/tex], which is undefined, because you can't divide by [tex]0[/tex]. So, the answer is [tex]\boxed{\tan{90^{\circ}}}[/tex]

Seven kg. of nuts costs $5. How many kg. of nuts can you buy with $2

Answers

7kg=$5

represent the unknown with an x.

Therefore,

7kg=$5

x=$2

5÷2 is 2.5

7kg÷2.5=2.8

2.8kg of nuts for $2.8

If three dice are rolled, what chance is there
of throwing a total of 18?

Answers

Answer:

1/216

Step-by-step explanation:

1/6 times 1/6 times 1/6

or 6^-3

Answer:

Step-by-step explanation:

There is only 1 way you can throw 18 with 3 dice. There are 6 * 6 * 6 = 216 ways of throwing 3 dice. Only 1 will give you  18. So the answer is 1/216

Determine the x- and y-intercepts of the graph of x+2y=−4 .


Then plot the intercepts to graph the equation. Plzzz help

Answers

Answer: graph is in picture

Graph the line using the slope and y-intercept, or two points

Slope: −1/2

x y

0. −2

2. −3

—————-————————————

the x- and y-intercepts :

x-intercept(s): (−4, 0)

y-intercept(s): (0, −2)

To find the x-intercept, substitute in 0 for y and solve for x. To find the y-intercept, substitute in 0 for x and solve for y.

what is the product please
-1/6 x 7 x 2/5

Answers

The correct answer is: " [tex]- \frac{7}{15}[/tex] " ;  or, write as:  " [tex]\frac{-7}{15}[/tex] " .

________________________________________

Step-by-step explanation:

   →   -1/6 * 7 * 2/5 ; [tex]\frac{-7}{15}[/tex]

         =  "  [tex]\frac{-1}{6} *\frac{7}{1} *\frac{2}{5} = \frac{(-1*7*2)}{(6*1*5)} = \frac{-14}{30}[/tex] " ;

Now, simplify the value:  " [tex]\frac{-14}{30}[/tex] " ;

_______

→  "    [tex]\frac{-14}{30} = \frac{(-14/2)}{(30/2)} = - \frac{7}{15}[/tex] " ;

_______

The correct answer is:  " [tex]- \frac{7}{15}[/tex] " ; or, write as: " [tex]\frac{-7}{15}[/tex] " .

_______

Hope this is helpful to you!

  Wishing you well !

_______

At a sale of radio sets, 1/3 of all the sets were sold the first day, 1/4 of all the sets were sold the second day, and 1/8 of all the sets were sold the third day. What fractional part of the sets was left unsold after the third day?
A) 17/24
B) 5/12
C) 7/18
D) 7/24

Answers

Answer: 7/24 is the answer to this question


5. Which digital construction tool does the same job as a compass?
A. Point
B. Line
C. Polygon
D. Circle with center through point

Answers

D. Circle with center though point

Please, Can someone help me, I don't know this one.

Answers

The smaller triangle’s missing side is 6.32 and the bigger triangle’s missing side is 10.

7/1 − 3 ( 7/3n − 7/2 )

Answers

Answer:

[tex]\frac{35}{2}[/tex] - [tex]7n[/tex]

Step-by-step explanation:

7/1 − 3( 7/3n − 7/2 )

Anything divided by one gives itself.

7 - 3 ( [tex]\frac{7}{3}n - \frac{7}{2}[/tex])

Use the distributive property to multiply −3 by  [tex]\frac{7}{3}n - \frac{7}{2}[/tex])

7 - 3 × ([tex]\frac{7}{3}[/tex][tex]n[/tex] - 3 (-[tex]\frac{7}{2}[/tex])

Multiply −3 times [tex]\frac{7}{3}[/tex]

7 - 7n - 3 (-[tex]\frac{7}{2}[/tex])

Express -3 (-[tex]\frac{7}{2}[/tex]) as a single fraction.

7 - 7n + [tex]\frac{-3(-7)}{2}[/tex]

Multiply −3 and −7 to get 21.

7 - 7n + [tex]\frac{21}{2}[/tex]

Convert 7 to fraction [tex]\frac{14}{2}[/tex]

[tex]\frac{14}{2}[/tex] - 7n +  [tex]\frac{21}{2}[/tex]

Since [tex]\frac{14}{2}[/tex] and [tex]\frac{21}{2}[/tex] have the same denominator, add them by adding their numerators.

[tex]\frac{14 + 21}{2} - 7n[/tex]

Add 14 and 21 to get 35.

[tex]\frac{35}{2} - 7n[/tex]

could anyone help me with this?

Answers

Answer:

ya

Step-by-step explanation:

.

Hi, please what's -3 1/2 - 1 5/6

Answers

Answer:

-8/3

Step-by-step explanation:

Answer:

-31 / 2 - 15 /7

-31 /2

= 15.5

-15/7

-2 .14

so the answer was.

-8/3

Find all missing angles m 1, m 2, m 3, and m 4

Answers

if i remember how to do this right:
m 1= 56°
m 2= 18°
m 3= 131°
m 4= 31°




sorry if this isn’t right, i tried

Answer:

i thinks it on a app

Step-by-step explanation:

yea the wedsite is

At HD Sport & Fitness gym, analysis shows that, as the demand of the gym, the number of members is 83 when annual membership fee is $17 per member and the number of members is 81 when annual membership fee is $24 per member. As the operator of the gym, you found out that number of members (q) and membership fee (p) have a linear relationship.

A) At what membership price, p, is the revenue maximized?
p=$??. Round your answer to 2 decimal places.

B) What is the maximum annual revenue?
R=$??. Round your answer to 2 decimal places.

Note: Round all coefficients of your revenue function to 2 decimal places.

Answers

The price at which revenue is maximized is $ 157, and maximum annual revenue is $ 6751.

Since at HD Sport & Fitness gym, analysis shows that, as the demand of the gym, the number of members is 83 when annual membership fee is $ 17 per member and the number of members is 81 when annual membership fee is $ 24 per member, and the number of members and membership fee have a linear relationship, to determine at what membership price is the maximized revenue, and what is the maximum annual revenue, the following calculations must be performed:

17 x 83 = 1411 24 x 81 = 1944 31 x 79 = 2449 38 x 77 = 2926 66 x 69 = 4554 73 x 67 = 4891 80 x 65 = 5200 94 x 61 = 5734 101 x 59 = 5959 122 x 53 = 6466 129 x 51 = 6579 150 x 45 = 6750 157 x 43 = 6751 164 x 41 = 6724

Therefore, the price at which revenue is maximized is $ 157, and maximum annual revenue is $ 6751.

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If Chris looks at the clock 10 minutes into class and the clock reads 9:15 A.M., what time did class begin?

Answers

Answer:

9:05

Step-by-step explanation:

just took the text

hope this helps!!!!

Answer:

9:05

Step-by-step explanation:

:15- 10 =5

3. Tiffani has a baseball
card collection with 273
cards in it. She decides to
seil one-third of her
collection. How many cards
does she have left

Answers

Answer:

Tiffani has 182 cards left.

Step-by-step explanation:

Find one-third (1/3) of 273:

1/3 x 273 = 91

Therefore, she sells 91 cards.

273 - 91 = 182 cards left

Hope this helps :)

On a ship, the ratio of crew members to passengers is 1:15.There are 540 passengers. How many crew members are there? ( Explain it easier)

Answers

Answer:

36 Crew Members

Step-by-step explanation:

So for every 1 crew member, there are 15 passengers.

So divide 540 by 15: 540/15=36

So by dividing that you get the number of crew members: 36

Draw two polygons that are similar but could be mistaken for not being similar. Explain why they are similar.

Answers

Answer:

they could possibly have the same number of vertices

Help please !!!!!!!!!!!

Answers

Answer:

120

Step-by-step explanation:

Because it’s congruent to the other angle

this is the last qestion help plz

Answers

Answer:

$513.75

Step-by-step explanation:

Let h represent the number of hours he worked in a week

An auto mechanic earns $498.75 in 35 hours during the week. His pay is $2.50 more per hour on weekends.

Hence, his pay Is represented by equation:

$498.75 + $2.50 × x

If he works 6 hours on the weekend in addition to the 35 hours during the week

$498.75 + $2.50 × 6

= $498.75 + $15

= $513.75

Therefore, he earns $513.75

Order the set of rational rumbers from least to greatest . 12.45, 12.54, 12.252, 12.41, 12.6, 12.51, 12.48 pls and thank u​

Answers

12.41, 12.45, 12.48, 12.51, 12.54, 12.6, 12.252 I think lol

write an equation of the line that has each pair of intercepts
x-intercept: 6 y-intercept: 3

Answers

Answer: y = 6x+3

Step-by-step explanation:

Please help!! BRAINLIEST to correct answer!!

Answers

Answer:

Here is your equation (x+2)^2+(y+10)^2=100

,  Hope this helps :)

Have a great day!!

Answer:

(x+2)²+ (y+10)²=100

Step-by-step explanation:

y=6x+2    P(-2,0)

x=-2

y=6 × (-2) + 2

y= -12+2

y= -10

M(-2,-10)      r= 0 - ( - 10 ) = 10

(x+2)²+ (y+10)²=100

Hope this helps!! Can I get brainliest?? Anyways have a great day!! :3

can someone help me how to do this​

Answers

Answer:

Answers in Bold

Step-by-step explanation:

Point Slope Form: (y - y₁) = m(x - x₁)

4. y - 4 = 0.8(x - 2)

   - To make it slope-intercept form

   y - 4 = 0.8x - 1.6

   y = 0.8x + 2.4

5. (Use slope finding formula) 4 - 10 / -2 - (-5) = 2

   y - 4 = 2(x + 2)

   - To make it slope-intercept form

   y - 4 = 2x + 4

   y = 2x + 8

O A. All real numbers
O B. y> 0
O c. y> 4
O D. y>4

Answers

Answer:

A

Step-by-step explanation:

cause an exponent and be any number

whats 186,282 rounded to the nearest thousand ?

Answers

Answer: 186,000

Step-by-step explanation:

You round the 282 down so that it is an even thousand. <3

186,282 rounded to the nearest thousand is 186,000.

To round 186,282 to the nearest thousand, we look at the digit in the thousands place, which is '6'.

If the digit in the hundreds place is 5 or greater, we round up. If it is less than 5, we round down.

In this case, since the digit in the hundreds place is '8', which is greater than 5, we round up.

To round up, we increase the digit in the thousands place by 1 and replace all the digits to the right with zeros.

Therefore, rounding 186,282 to the nearest thousand gives us 187,000.

To know more about nearest thousand, refer here:

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In London. I pint of milk costs 58p.
In Paris, 1 litre of milk costs 1.05 euros.
1 litre = 1.76 pints
£1 = 1.17 euros
In which city is the milk better value for money, London or Paris?
You must show your working.

Answers

Comparing the equivalent cost of Milk in Euro in the two countries, then we can conclude that Milk is a better value for money in Paris.

In other to make accurate comparison of the cost ; we need to using the same unit or milk and same currency value :

Cost of 1 pint of Milk in London :

1 pint = 0.58 pounds

The equivalent value of 1 pint of Milk in terms of Euro in London will be :

1 pound = 1.17 euro

0.58 pound = x

Cross multiply :

x = 1.17 × 0.58

x = 0.6786 euro

x = 0.68 euro

Hence, 1 pint of Milk cost 0.68 euro in London

Cost of 1 pint of Milk in Paris :

1 Litre = 1.76 pint

Hence,

1.76 pint = 1.05 euro

1 pint = c

1.76c = 1.05

c = 1.05 / 1.76

c = 0.597 euro

Hence, cost of 1 pint of Milk cost 0.60 euro in Paris

Therefore, since the cost of Milk in Paris cost less in Paris than in London, then Milk is a better value for money in Paris.

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in a standard normal distribution, the probability that z is greater than zero is

Answers

Answer:

50%

Step-by-step explanation:

The distribution is symmetrical about  the y-axis.

The probability that z is greater than zero in a standard normal distribution is 0.5 or 50%.

What is Probability?

The branch which deals with the occurrence of a random event is known as probability.

The area under the curve to the right of z = 0 is equal to the area under the curve to the left of z = 0. So the standard normal distribution is symmetric about the mean of zero

As the total area under the curve is equal to 1, each of these areas must be 0.5 or 50%.

In a standard normal distribution, the probability that z is greater than zero is 0.5, or 50%.

Therefore, the probability that z is greater than zero in a standard normal distribution is 0.5 or 50%.

To learn more on probability click:

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