if xsquared+ysquared=57 , xy=3 . find the value of 3(x+y)squared

Answers

Answer 1

Answer:

189

Step-by-step explanation:

If you mean this, my answer is 3x63= 189

[tex] {x}^{2} + {y}^{2} = 57 \\ xy = 3[/tex]

[tex] {x}^{2} + {y}^{2} + 2xy = 57 + 2 \times 3[/tex]

[tex] {(x + y)}^{2} = 63[/tex]

[tex]3 {(x + y)}^{2} = 3 \times 63 = 189[/tex]


Related Questions

Explain why a + 2b = 110 in the triangle shown​

Answers

Answer:

Step-by-step explanation:

According to the Triangle Angle-Sum Theorem, all the angles of a triangle have to add up to equal 180 degrees. For us, in our triangle:

a + 2b + 70 = 180 so

a + 2b = 180 -70 and

a + 2b = 110. That's why.

Which word BEST describes 3x, 5y, and z in the expression 3x − 5y + z?
A terms
B products
C variables
D coefficients

Answers

A. terms is the best way to describe them

The Duke Blue Devils basketball team plays home games at Cameron Indoor Stadium. The court is in the shape of a rectangle. If the length of the court is (5.8a+6.1b-3.6c) feet and the width of the court is (434b-235c) feet, then what is the perimeter of the court?

Answers

Answer:

11.6a + 880.2b - 477.2c

Step-by-step explanation:

Given:

length of the court = (5.8a+6.1b-3.6c) feet

width of the court = (434b-235c) feet

Since the court is said to be rectangular in shape :

The perimeter of a rectangle = 2(length + width)

Perimeter = 2(5.8a+6.1b-3.6c + 434b-235c)

Perimeter = 2(5.8a+6.1b+434b-3.6c-235c)

Perimeter = 2(5.8a + 440.1b - 238.6c)

Perimeter = 11.6a + 880.2b - 477.2c

Math, math,math, hate it all year long

Answers

Answer:

the answer is $50.00

Step-by-step explanation:

okay so first u gave to subtract $80.00 from $430 u will get $350.00 then divide it by 7 and then you will get your answer

Answer:

ok

Step-by-step explanation:

Someone pls pls pls solve this!!!!!!! And pls explain how u solved it. I need this due rn ASAP!!!

Answers

35°..

can also be 145° but not in this case since the angle is less than 90°

Please help me-
f(x) = x2. What is g(x)?

Answers

Answer:

D. g(x) = 3·x²

Step-by-step explanation:

The given parent function, f(x) = x²

The graph of the function, g(x) is narrower than the graph of the function f(x)

Therefore, the coefficient of the quadratic function is larger than 1

The given point on the parabola, g(x) = (1, 3)

Therefore. when x = 1, g(x) = 3

However, when x = 1, f(x) = 1

Therefore, given that g(x) = a·f(x), we get;

a = g(x)/(f(x)) = 3/1 = 3

g(x) = 3·x²

Diego's family car holds 14 gallons of fuel. Each day the car uses 0.6 gallons of fuel. A warning light comes on when the remaining fuel is 1.5
gallons or less. Starting from a full tank, can Diego's family drive the car for 14 days without the warning light coming on? Explain or show your reasoning.

Answers

Yes, 14 • 0.6< 14
The amount of gas used up in 14 days is 8.4 which leaves 5.6 gallons remaining

5.6 > 1.5


message
The drama club is running a lemonade stand to raise money for its new production. A local grocery store donated cans of lemonade and bottles of water. Cans of lemonade sell for $2.50 each and bottles of water sell for $1.25 each. The club needs to raise at least $600 to cover the cost of renting costumes. The students can accept a maximum of 460 cans and bottles.

Write a system of inequalities that can be used to represent this situation.

The club sells 144 cans of lemonade. What is the least number of bottles of water that must be sold to cover the cost of renting costumes? Justify your answer

Answers

Answer:

Part A

x + y ≤ 460

2.5·x + 1.25·y ≥ 600

Part B

192 bottles

Step-by-step explanation:

The given parameters are;

The selling price of a can of lemonade = $2.50

The selling price for each bottle of water = $1.25

The amount the club needs to raise to cover the cost of renting costumes, A = $600

The maximum acceptable cans and bottles = 460

Part A

Let 'x', represent the number of cans of lemonade accepted by the students, and let 'y' represent the number of bottles of water accepted, we have;

The situation can be represented by the following system of inequalities

x + y ≤ 460

2.5·x + 1.25·y ≥ 600

Part B

The number of cans of lemonade sold, x = 144

Therefore, we have;

2.5 × 144 + 1.25·y ≥ 600

1.25·y ≥ 600 - 2.5 × 144 = 240

1.25·y ≥ 240

y ≥ 240/1.25 = 192

y ≥ 192

The least number of bottles of water that must be sold to cover the cost of renting costumes, y = 192 bottles

The graphs below have the same shape. What is the equation of the graph of g(x)?
A. g(x) = (x-2)^2
B. g(x) = (x+2)^2
C. g(x) = x^2 - 2
D. g(x) = x^2 + 2 ​

Answers

Answer:

Step-by-step explanation:

B. Because adding 2 moves you to the left when inside the parentheses.

i'll mark brainliest !!!!!!!!!!

Amar wants to make lemonade for a birthday party. He wants to mix 12 tablespoons of sugar in water. He only has a teaspoon which needs to be used 4 times to be equivalent to one tablespoon. At this rate, how many teaspoons of sugar will Amar need to make the lemonade?

HOW MANY TEASPOONS OF SUGAR WILL AMAR NEED TO MAKE LEMONADE !?

Answers

It’s 4x12 if u know ur times tables it’s 48 teaspoons of sugar

Answer:

Amar will need 48 teaspoons of sugar to make lemonade

Step-by-step explanation:

If u need 4 teaspoons to make one tablespoon, then you just can do

4 x 1 = 4

so, having that now you can do

4 x 2 = 8

there you get 8 teaspoons

Now you do

4 X 12 = 48

I need help can someone please answer this for me

Answers

Try C if it doesn’t work try A,B,D

the window of a building 65m above the street level from this window ,a person looks across the street at a building and finds that the Angle of elevation of the top of the building is 72°and the angle of depression if the bottom of the building is 28° .if the street level is horizontal and the ground distance between the building is 80m.find to the nearest m the vertical heights of the building

Answers

not so sure about your question. please check.

I need help with this

Answers

Answer:

angle B is 38°

Step-by-step explanation:

all angles in a triangle has to equal 180°.

So first find the measurement of angle BAD. This is done by subtracting angle of CAD=46° from the total angle CAB=78° to get 32° for angle BAD. So if angle ADB is 110° and angle BAD is 32° which equals (110+32=) 142.

Then take 180 - 142 = 38°

Answer:

38

Step-by-step explanation:

We can see that A is equal to 78. We can also see that CAD is equal to 46. Therefore BAD is equal to 32. Add 32 and 110 together to get 142. Subtract 142 from 180 to get 38.

Hope that this helps!

What is the equation of the parabola with focus (1/3, 2/3) and directrix y = 1/2pls help ill give points

Answers

Answer:

D. y = 3·x² - 2·x + 11/12

Step-by-step explanation:

The coordinates of the focus of the parabola, f = (1/3, 2/3)

The directrix of the parabola, y = 1/2

The standard form of the equation of a parabola is (x - h)² = 4·p·(y - k)

The coordinates focus = (h, k + p)

The y-coordinates of the directrix, y = k - p

By comparison, we have;

h = 1/3...(1)

k + p = 2/3...(2)

k - p = 1/2...(3)

Adding equation (3) to equation (2) gives;

k + p + (k - p) = k + k + p - p = 2·k = 2/3 + 1/2 = 7/6

k = (7/6)/2 = 7/12

k = 7/12

From equation (2), we get;

p = 2/3 - k

∴ p = 2/3 - 7/12 = 1/12

p = 1/12

The equation of the parabola is therefore;

(x - 1/3)² = 4·(1/12)·(y - 7/12) = y/3 - 7/36

y = 3 × ((x - 1/3)² + 7/36) = 3 × ((x² - 2·x/3 + 1/9) + 7/36) = 3·x² - 2·x + 11/12

y = 3·x² - 2·x + 11/12.

Please Help 50 points!!

A substance decays so that the amount A of the substance left at time t is given by:

Answers

Answer:

lol sorry for answer what's that

A company estimates that 1500 units of product will be sold at Rs.110 and 750 units at a price of Rs.125. Determine the demand function.

Answers

Answer:

d(x)  =  6.68*x  +  765

Step-by-step explanation:

The demand function is a linear function of the price, then:

demand function d(x), is an equation of the type:

d(x)  = p*x  + b

In that equation we have two parameters  p  and  b

and we have two points of the straight line:

P ( 1500 ;  110 )

Q ( 750  ;  125 )

1500  =  p*110  +  b       (1)

750    =  p*125 + b        (2)

Subtracting  (1)  -  (2)  

1500  -  750  =  (110- 125 ) +  b

750  + 15  =  b

b  =  765     intercept on y-axis

1500  =  110*p  + 775

1500  -  765  =  110 *p

p  =  735/110

p  =  6.68

The equation of demand is:

d(x)  =  6.68*x  +  765

(n+t) divided by 4 i need the answer please

Answers

Answer:

[tex]\frac{n+t}{4}[/tex]

Step-by-step explanation:

(n+t) divided by 4

The equation would be [tex]\frac{n+t}{4}[/tex]

Hope this helps

Answer:

(n+t)/4

Step-by-step explanation:

Given f(x) and g(x) = f(x) + k, use the graph to determine the value of k.


A. 2
B. 3
C. 4
D. 5

Answers

Answer:

3

Step-by-step explanation:

Which ordered pair (a,b) is the solution to the given system?

Answers

Answer:

1,3 3,1

Step-by-step explanation:

Need help with this question

Answers

Answer:

don't know about this question

14. If I share 123 sweets equally among amongst 7 children, how many sweets will each child get?
……………………………………..

Answers

Answer:

No. of sweets = 123

No. of children = 7

then

sweets per children =123/7 =17. 57

Answer: =17.57

Step-by-step explanation:

Divide the no. of sweets by the no. of children

=123/7

=17.57

How do I find the area of the parallelogram?

Answers

Answer:

using trigonometry first find the height I mean the dotted line

then use the formular 1/2*h*(a+b)

where h is the height you just found

a is 10

b is 6

Which is the graph of f(x) = (x + 3)(x - 2​

Answers

Answer:

Step-by-step explanation:

f(x) = (x + 3)(x - 2​) has two zeros:  One stems from (x + 3) = 0 and is (-3, 0); the other stems from (x - 2) = 0 and is (2, 0).  

The axis of symmetry is a vertical line located halfway between -3 and 2:  

x =  -1/2.

The graph opens up because the given (x + 3)(x - 2) has a positive leading coefficient (+1).

With this information we can eliminate the last two possible answers.  Note that the x-intercepts of the first graph are -3 and 2,  Thus, the first graph is the correct one.

Which of the following is the solution to the inequality below?
-6(4 - x) S-4(x + 1)
O A. x210
O B. x5 10
O C.x22
O D. x52

Answers

Answer:

x≤2

Step-by-step explanation:

-6(4 - x) ≤-4(x + 1)

Distribute

-24 +6x≤ -4x-4

Add 4x to each side

-24 +6x+4x≤-4x-4+4x

-24 +10x≤ -4

add 24 to each side

-24+10x+24≤-4+24

10x≤20

Divide by 10

10x/10 ≤20/10

x≤2

Answer:

D. x ≤ 2

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Brackets Parenthesis Exponents Multiplication Division Addition Subtraction Left to Right

Distributive Property

Equality Properties

Multiplication Property of Equality Division Property of Equality Addition Property of Equality Subtraction Property of Equality

Algebra I

Terms/Coefficients

Step-by-step explanation:

Step 1: Define

Identify

-6(4 - x) ≤ -4(x + 1)

Step 2: Solve for x

[Distributive Property] Distribute -6:                                                                 -24 + 6x ≤ -4(x + 1)[Distributive Property] Distribute -4:                                                                -24 + 6x ≤ -4x - 4[Addition Property of Equality] Add 4x on both sides:                                    -24 + 10x ≤ -4[Addition Property of Equality] Add 24 on both sides:                                  10x ≤ 20[Division Property of Equality] Divide 10 on both sides:                                 x ≤ 2

Question 6 Multiple Choice Worth 1 points)
(01.06 LC)
Solve x - 5y = 6 for x.

Answers

Answer:

x = 6+5y

Step-by-step explanation:

x - 5y = 6

Add 5y to each side

x - 5y+5y = 6+5y

x = 6+5y

Answer:

x = 6 + 5y

Step-by-step explanation:

x - 5y = 6

Solve for x.

x - 5y = 6

Add 5y to both side

x - 5y + 5y = 6 + 5y

x = 6 + 5y

To find the quotient of 3 divided by 6/1

Answers

Answer:

1/3

Step-by-step explanation:

3÷6/1 is the same thing as 3÷6

and when reducing to the lowest term gives 1÷3 or 1/3

Solve the equation for all real solutions in simplest form.
2r^2 + 7r– 1 = -3r^2

Answers

Answer:

2r^2 + 3r^2 + 7r - 1 = 0

5r^2 + 7r - 1

Answer: 0.0833 or 83/1000

Hope this helps :)

A set of composite numbers less than 12 .express it in listing and set builder methods​

Answers

Given:

A set of composite numbers less than 12.

To find:

The set by listing and set builder methods​.

Solution:

Composite number: A positive integer is called a composite number if it has at least one divisor other than 1 and itself.

Composite numbers less than 12 are 4, 6, 8, 9, 10.

By using the listing method , the given set can be expression as:

Set = {4, 6, 8, 9, 10}

The numbers 4, 6, 8, 9, 10 are greater than 1, less than 12 and non prime numbers.

By using set builder method, the given set can be expression as:

Set = [tex]\{x|x\neq P,1<x<12\}[/tex]

Therefore, the list and set builder notation of the given set are {4, 6, 8, 9, 10} and [tex]\{x|x\neq P,1<x<12\}[/tex] respectively.

Which of the following functions represent exponential decay and has a y-
intercept of 2?
O y = {(0.85)*
O y = (2)*+2
O y = 4 (2)*
O y = 2(3)*

Answers

Answer:

Non of the given options

A function that represent an exponential decay and 2 as the y-intercept is y = 0.85ˣ + 1

Step-by-step explanation:

An exponential decay function is a function that reduces in magnitude at a constant percentage rate, r (< 1)

An exponential decay can be represented by the formula, y = a·(1 - r)ˣ

Therefore, the growth factor, (1 - r) = b is less than 1 for an exponential decay

Therefore the function that represent an exponential decay is y = 0.85ˣ, while a function that represent an exponential decay and has a y-intercept of 2 is y = 0.85ˣ + 1. therefore, non of the options

If y is 22.6 and c is 28.2, find b, rounded to the nearest tenth.

Answers

Can u send the question to be more clear
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