if 3x2+3y2=42 and xy= -15, find the value of (x-y)2

Answers

Answer 1

Answer:

44

Step-by-step explanation:

x^2 + y^2 = 14

(x-y)^2  x^2 + y^2 - 2xy = 14 -2 * (-15) = 44

Answer 2
was the other answer right?

Related Questions


someone answer this please

Answers

Answer:

Hello answer: 500

Step-by-step explanation:

(base × height)

25 × 20 = 500 therefore 500 is the area

Answer:

Area: 500 yd^2

Step-by-step explanation:

Area= b • h

Area= 25 • 20

Area= 500

Hope this helps!

what expression represents an equilateral triangle if all of the sides measure (6x - 6.3) as a sum?

a) 2x + 2x + 2x - 2.1
b) x - 2.1 + x - 2.1 + x - 2.1
c) 2x - 2.1 + 2x - 2.1 + 2x - 2.1
d) 2x - 2.1 + 2x - 2.1 + 2x - 2.1 + 2x - 2.1

Answers

Answer:

c

Step-by-step explanation:

since a triangle have 3 sides and 6x-6.3 is the formula u divide it by 3 and u get 2x-2.1 also = to c

The answer is is C .

Can someone please help with these two questions?

Answers

Question two is C. Question three is B

Answer:

For question 2, it is C) 3a.

For question 3, it is B) 3.

Step-by-step explanation:

For question 2, we are given that Mary's age is a and her mother's age is 3 times as old as Mary. The key word is "times" so this means that the expression can be written as 3a or 3 * a.

For question 3, the question asks for the greatest number that divides evenly into both 42 and 81. Using simple math, C and D automatically elliminates itself because one of the numbers divided gives a whole and the other gives a decimal. All is left is A and B. Obviously, a number divided by one will by itself so it stays even either way and the two numbers divided by 3 will give us two whole numbers and 3 is the greatest possible number so that concludes that it is B.

Please please please answer these questions!!!!! I’d really appreciate it!!



18 points……

Answers

Answer:

8.

60 * 2 + 30 = 150km

225 - 150 = 75km

50km/h  and  75km, so 1.30h

1.30 + 2.30 + 0.10 = 4.10h

Im not very good at english so I dont know how to explain...

9.

1.30 - 47 = At 12.43

The answer is 4.10h

Hope this helps!!

Please explain how you got the answer.

Answers

Answer:

C

Step-by-step explanation:

1/3 is part of a whole number (3/3). So it still is an integer, but it is not a whole number- all fractions and decimals are like this.

Answer:

c

Step-by-step explanation:

1/3 is rational it's not infinite or anything

however it's not a whole number (whole numbers being (1, 2, 3,...etc.)

I WILL REWARD BRAINLIEST

Answers

Answer:

It is 65 in.

Step-by-step explanation:

62 is the median, and 66 is the mode. 65 is right between 62 and 66.

it is 65 in for the answer

Kim deposited $1,422 into a savings account. After 5 years, she had a total of $1,635.30 in her account. What is the interest rate?

With step by step explanation = Brainliest

Answers

Answer:

don't know

Step-by-step explanation:

ok please mark mr brainlist

Answer:

3%

Step-by-step explanation:

Interest rat is calculated by using the equation A = P(1 + r)^n

A is the amount after interest. Here, it is 1635.30

P is the principal, or base, amount. Here, it is 1422

r is the rate at which there is interest. It is what we need to find out.

n is the amount of years interest is calculated for. Here, it is 5

Now that we have everything, we calculate:

1635.30 = 1422(1 + r)^5

Now we have to get r on one side of the equation by itself:

Divide both sides by 1422:

1635.30/1422 = (1 + r)^5

5√(1655.30/1422) = 1 + r

5√(1.16406469) - 1 = r

Now r is on one side of the equation.

The 5th root of 1.16406469 is 1.03084987

1.03084987 - 1 = 0.0308, so it is 3%

The 5√ is the 5th root of the numbers

Or it's 2.835 percent I don't know

Can someone please do these two!! I would really appreciate it!!!



18 points….

Answers

Answer:

4) 80 miles per hour?

5) 1 hour 30 minutes

Step-by-step explanation:

1 hour and 40 minutes

What is the value of u ?

Answers

Step-by-step 40.9? i guess i dunno shawty bae bestie

what is the value of g ?

Answers

Answer:

g is 33.4 degrees because vertical angles are congruent.

Step-by-step explanation:

Answer:

[tex]\huge\boxed{Answer\hookleftarrow}[/tex]

[tex]g = 33.4°[/tex]

g = 33.4° because its vertically opposite angle is 33.4°. Vertically opposite angles (V.O.A.) are equal to each other.

ʰᵒᵖᵉ ⁱᵗ ʰᵉˡᵖˢ

# ꧁❣ RainbowSalt2²2² ࿐

A teacher surveys 30 students on the the number of books they read over the summer.The data are represented in the box plot what is the median number of books read

Answers

Answer:

Wheres the plot?

Step-by-step explanation:

A small heater is in the shape of a square pyramid each side of the pyramid's base measuers 30.5 centimeters. The slant height of the pyramid is 164.8 centimeters. what is the height of the pyramid?

Please give an answer to this and give a step by step explanation on what to do to solve this. Will give BRAINLIEST to the person who does what I asked and gives the correct answer with an reasonable explanation.

Answers

Answer:

Step-by-step explanation:

30.5/2 = 15.25

15.25^2 + b^2 = 164^2

232.5625 + b^2 = 26896

b = 163.29

Answer:

Step-by-step explanation:

30.5/2 = 15.25

15.25^2 + b^2 = 164^2

232.5625 + b^2 = 26896

b = 163.29

I hope this helps

The two-way table below shows the number of students in a school who like mathematics and/or physics: Like Mathematics Do Not Like Mathematics Total Like Physics 15 20 35 Do Not Like Physics 5 25 30 Total 20 45 65 How many more students like physics than mathematics? (5 points) Group of answer choices 10 15 20 25

Answers

Answer:

21

Step-by-step explanation:

9/10/21

28. Express 22.7 : 45.4 as a single decimal

Answers

Answer:

0.5

Step-by-step explanation:

22.7: 45.4 = 22.7/45.4

                 = 227/454

                 = 0.5

A circle has a circumference of
3.14
3.143, point, 14 units.
What is the diameter of the circle?

Answers

Answer:

Hope this helps you

The diameter is 1 unit

Step-by-step explanation:

The circumference is 3.14 units

C = pi * d

Using 3.14 for pi

3.14 = 3.14 d

Divide each side by 3.14

3.14/3.14 = 3.14 d/ 3.14

1 =d

The answer is D hope this helps u:D

Find surface area of the prism. Thanks.

Answers

I think the surface area is 38

The surface area is 38. Hope this helps! :D

Can someone help me pleaseeee

Answers

Yes! The answer is C.
i believe the answer is c

A store is having an inventory reduction sale s an employee marks down some nightstands from $40-$18 what percentage is the discount.

Answers






I think that is the answer

45% is the answer to your question.

wanda reads 180 pages in 2 3/4 h. How many pages can she read in 5 1/2 h?

Answers

Answer:

are there any options? if not then i think it's 360 ( sorry if i'm wrong)

Answer:

360

Step-by-step explanation:

We find Wanda's reading speed in pager per hour, which is 180/2 3/4 = 180/2.75 = 65.4545...

To find how many pages she reads in 5 1/2 hours, multiply 65.4545... by 5 1/2, or 5.5 to get 360. She reads 360 pages in 5 1/2 hours

REWARDING BRAINLY FOR CORRECT ANSWER
Study the list of numbers shown.
2 , 5 , 7 , 4 , 5 , 9 , 2 , 5 , 1 , 8 , 4 , 4 , 7 , 9 , 4
What is the median of these 15 numbers?
9
7
5
4

Answers

Answer:

1, 2 , 2,  4 , 4 , 4 ,4 , 5 , 5 , 5 , 7 , 7 , 8 , 9 , 9

Step-by-step explanation:

5. The median is 5.

Find the median of the data set
3/8 3/4 9/16 7/12

Answers

Answer:

7.5

Step-by-step explanation:

To find the median you must align all the numbers least to greatest so the order goes like this. 3,3,4,7,8,9,12,16. Then you must find the number in the middle. since there is not a number in the middle you add 7 and 8 together and then divide by 2 which is 7.5

The median of the entire data set is 7.5

Find the value of x.

Answers

180 - 73 - 13 = 94 hope it helps
what they said i think yes^^

30. The two quantities are in proportion. Find the missing value.
x/31 : 9

Answers

Answer:

279

Step-by-step explanation:

x/31:9 => x/31 = 9/1

                x = 31*9

                  x = 279

The answer is 279!!!

Hope this helped!

Which of the following values of m will result in a true statement when substituted into the given equation?

m – 1.9 = 2.2

A. m = 2.8
B. m = 3.8
C. m = 4.1
D. m = 4.9

Answers

answer : m = 4.1

explanation:

4.1 - 1.9 = 2.2
C. m = 4.1

Using inverse operation,
2.2 + 1.9 = 4.1

Therefore, 4.1 is the answer. I hope this helped!

I WILL GIVE BRAINLIEST TO CORRECT ANSWER! C:
Riley kept track of the number of minutes he practiced his piano over six days. On the first five days, he practiced for 30, 20, 25, 15, and 45 minutes. The range of minutes for the six days was 35. How many minutes did Riley practice on the sixth day?


10 minutes

25 minutes

27 minutes

80 minutes

Answers

Answer:

25 minutes

Step-by-step explanation:

Answer:

10 minutes

Step-by-step explanation:

15 + 35 = 50. 50 IS NOT A TEST ANSWER

45 - 35 = 10. 10 IS A TEST ANSWER

Valerie shares some of the 12 candies from this box.she gives her friend 1 candy for every 3 candies she eats herself. How many candies does she give to her friend?

Answers

Answer:

3

Step-by-step explanation:

Every group of candies eaten is 4 candies because Valerie eats 3 and her friend eats 1. 1+3 = 4 . 12/4 = 3

Step-by-step explanation:

1 : 3 = 4 <-- simplified ratio

x : y = 12 <-- trying to find the real ratio

12 ÷ 4 = 3 <-- find the unit rate

1 × 3 = 3 <-- find how much the friend has

So, her friend got 3 candies

What is the value of u ?

Answers

Is the value of u40.9 degrees
Answer: 40.9

180-139.1 = 40.9

A grocery store received two shipments of watermelon. Each watermelon in a shipment was weighed, then a line plot was made of all of the weights in a shipment.


What statement about the two plots’ distributions is true?



The degree of overlap between the two distributions is high.


There is no overlap between the two distributions.


The degree of overlap between the two distributions is low.


The degree of overlap between the two distributions is moderate.

Two line plots with the same scale and interval, from fifteen to twenty-five, with tick marks every one unit. The plots are stacked vertically for comparison. Values appear as x marks above the line. Each plot has eighteen data values. Upper plot is labeled Shipment 1.

Lower plot is labeled Shipment 2. Under each plot is the label Weight, in pounds. Upper plot data values are one x mark above sixteen, one x mark above seventeen, one x mark above eighteen, one x mark above nineteen, two x marks above twenty, three x marks above twenty-one, four x marks above twenty-two, three x marks above twenty-three, three x marks above twenty-four, and one x mark above twenty-five. Lower plot data values are one x mark above sixteen, two x marks above seventeen, three x marks above eighteen, four x marks above nineteen, three x marks above twenty, three x marks above twenty-one, two x marks above twenty-two, zero x mark above twenty-three, and one x mark above twenty-four.

Answers

Answer:I have no idea

Step-by-step explanation:

please help! giving brainlest if explained

Answers

Answer:

Hello, Im Mack, | Hope your doing well :)

Here is the Answer Ive got for you:

Step-by-step explanation:

Here is the Table filled out with the correct Values:

Speed Equation: (Velocity=distance/time)

Distance: Distance traveled: Time traveled: Speed:

0-2 2 Meters 20 Secs 10secs/m

4-6 6 Meters 30 Secs 5secs/m

8-10 10 Meters 50 Secs 5secs/m

Comment if you need further help, and I will rely asap,

Hope I helped you out :)

Have a great day my friend and best of luck to your studies :)

The cancer is 5m per second

a florist orders sunflowers every 6 days, starting from the sixth day of the year, and daisies every 4 days starting from the fourth day of the year. when is the first THREE TIMES she will order the flowers on the same day?

Answers

Answer: 12th day

Step-by-step explanation:

Given , A florist orders sunflowers every 6 days and  daisies every 4 days.

When it started from same day, then the next day she orders both kinds of flowers on the same day will be LCM (6,4), where LCM = Least Common Multiple.

Prime factorization:

6 = 2 x 3

4 = 2 x 2

LCM(6,4) = 2 x 2 x 3 = 12

Hence, she will order both kinds of flowers every 12 days.

Answer: 1 2 3

Step-by-step explanation:

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