Mathematics Middle School

If x+y = 12 and xy = 14, find the value of (x2 + y2).

Answers

Answer 1

Answer:

Step-by-step explanation:

If x+y=12, x2+y2 must be double this. 12×2=24

Answer 2

Answer:

Substitute x + y = 12 and xy = 14 in the above expansion, we get, Therefore, the value of is equal to 116.I think

Related Questions

Solve the equation 5 – 8n = 10 for n.

n= 5/

What is the bottom number 'cause I got the top one ;-;

Answers

Answer:

5-8n=10

5-8×5=10

5-40=10

-35=10

0=10+35

0=45

and how are you raspberry? after a long time

Answer:

N= -5/8=0.625

Step-by-step explanation:

2.1 Solve : -8n-5 = 0

Add 5 to both sides of the equation :

-8n = 5

Multiply both sides of the equation by (-1) : 8n = -5

Divide both sides of the equation by 8:

n = -5/8 = -0.625

Zoey measured a line to be 15.7 inches long. If the actual length of the line is 14.8 inches, then what was the percent error of the measurement, to the nearest tenth of a percent?

GIMME THE ANSWER PWEEEEESEEE >:( ILL GIVE BRAINLIEST >:)

Answers

Answer:

it is %6.1

Hope this helps

Percentage error: 5.73%

Explanation: (14.8-15.7)x100=5.732

can someone help me plsssss

Answers

Answer:

5.375

Step-by-step explanation:

The mean of average represents [tex]\frac{sum -of-all-numbers}{total-numbers}[/tex]. We see that there are a total of 8 numbers, so: [tex]\frac{3+7+12+9+3+6+2+1}{8}=\frac{43}{8} =5.375[/tex]

Find the value of each expression mentally.

145.1

_
100

Answers

Mentally? What kind of math problem is done mentally

Answer:

1.45100

Step-by-step explanation:

If it dividing then this is the answer

Help pls
Find the volume of the composite solid.

Answers

Answer:

60cm cubic

Step-by-step explanation:

60 cm cubic feet
Sorry if wrong I tried

Ca someone plzzz help meeeee!

Answers

Answer:

3.8, 3.9 , 4.0 , 4.1 , 4.2 ,4.3

Step-by-step explanation:

Answer:

The two missing numbers are 3.9 and 4.1

Step-by-step explanation:

You are counting up by .1

I suck at basic Geometry. ( episode 3)
( oh yeah, please explain how to get it, this one is easy, im just making sure my answer is correct)

Answers

Answer:

I am so sorry I did not mean to answer this question, can anyone help me answer it?

Step-by-step explanation:

i need help asap pleaseee,

the answer choices are
a. -2
b. 1/2
c. 2
d. -1/2

Answers

Answer:

The slope of line A is C. 2

Step-by-step explanation:

You can check the slope by dividing the rise (how many units up) and the run (how many units across). This line has a rise of rise of 4 and a run of 2. Diving 4 by 2 gives you a slope of 2.

Charles can ride his bike 4 miles in 20 minutes. Which of the following ratios show the number of miles to minutes Charles can ride his bike?
1. 24:1
2. 1:4
3. 4:24
4. 1:5

Answers

Answer:
1:5
Step-by-step explanation:
He rode one mile in 5 minutes because 4/4 is 1 and 20/4 is 5

Solve. 61 divided by 15

A.) 4 1/15
B.) 4 1/61
C.) 15 1/4
D.) 4 1/6

Answers

Answer:

4 1/5 is your required answer

Step-by-step explanation:

answer to your question is 4.06666666

I'm new to this app

Have a great day

The 61 divided by 15 can be written as the mixed number 4 1/15 (option A).

To calculate 61 divided by 15, we perform the division and express the result properly:

When we divide 61 by 15, the quotient is 4 with a remainder of 1. This means that 61 can be evenly divided by 15 four times, with a remainder of 1.

To express this as a mixed number, we divide the remainder (1) by the divisor (15) to get the fractional part. The fractional part is 1/15.

Therefore, 61 divided by 15 can be written as the mixed number 4 1/15.

Thus, the correct answer is option A) 4 1/15.

To know more about divided:

https://brainly.com/question/15381501

#SPJ6

Your mother has a new cell phone. It comes with 18 applications already installed. She uses only "2" /"3" of those applications. She downloaded an additional 12 applications that she uses regularly. Write an equation to represent the total number of applications your mom uses.

Answers

Answer:

18*2/3+12

Step-by-step explanation:

So, out of 18, she only uses 2/3, so it will be 18*2/3, plus the additional 12 she downloaded.

PLEASE HELP NO TROLLS
5. Find the measure of angle A. *

Answers

you add the two angles to get the exterior angle. 50+70 = 120°

A= 120°

A triangle is 180° so if you add 70° and 50° that creates 120° so take 180° and 120° your left with 60°! So the answer is 60°

Creed's brother earns $12.00 per hour. The store offers him a raise -- A 5% increase per hour. After the raise, how much will Creed's brother make per hour?

Answers

Answer:

$12.60

Step-by-step explanation:

Creed's brother originally makes $12.00 an hour. A 5% raise means that:

$12.00 × 1.05 = $12.60

If you raise $12.00 by 5% then you have the formula
12x0.005=0.006
12+0.6=12.6
So after the raise Creeds brother will make $12.60/hour

Three friends earned more than $200 washing cars. They paid their parents $28 for supplies and divided the rest of money equally. Write an inequality to find possible amounts each friend earned. Identify what your variable represents.

Answers

Answer:

x is each friend

3x + 28 > 200

3x > 172

x > $57.33

Answer:

3x+28>200

Step-by-step explanation:

A class of 25 students is making necklaces. The necklaces each have 30 beads. How many beads are needed for each student to make one necklace?

Answers

Answer:

I have no clue

Step-by-step explanation:

Answer:

750 beads are needed for each student to make one necklace

Step-by-step explanation:

25 x 30 = 750

Please help its due tonight !!

Answers

Answer:

Number 4. is 17.3 degrees and 7. is 30 degrees.

Step-by-step explanation:

4. is 17.3 because 50 degrees subtract 32.7 and the answer is 17.3.

7. I used a protractor.

The answer to number 4 is 30

16,000*y=220,000 what does y equal

Answers

Answer: y = 13.75

Step-by-step explanation:

16000y = 220000

Divide both sides by 16000

220000 ÷ 16000 = 13.75

y = 13.75

plssss help !,! Tim was given $100 for his twelfth birthday. He's curious to see how much it will grow to if he earns interest on it. His mother tells him that she has about $3,000 in the same kind of account and she earned $120 last year. About how much interest could Tim expect to earn in a year?
A. $4.00
B. $12.00
C. $40.00
D. $1.20

Answers

Answer:

Step-by-step explanation:

gurl I have not one idea but I need the point

Answer:

$4.00

Step-by-step explanation:

You need to work out how much $120 is as a percentage of $3000.

$3000 x percentage / 100 = 120

$3000 x percentage = 12000

percentage = 12000 / 3000 = 4

= 4%

The work out 4% of $100 = $4.00

Hope this helps

Find the radius or diameter of each circle with the given dimension (Will give brainliest to correct answer)

1.) d= 3 m
2.) r= 14 ft
3.) d= 20 in.

Answers

Answer:

3.14 = pi

1.) R = 1.5 and A = 7.065

2.) D = 28 and A = 615.44

3.) R = 10 and A = 314

Step-by-step explanation:

R = 0.5×d

Area of circle = π×r²

I need help pls✨✨✨✨✨✨✨✨✨✨

Answers

Answer:

I don't feel like doing work but just looking I'm pretty sure it's B, but I could be wrong.

Your are correct it is B

plz help I understand

Answers

Answer:Its "B" as far as I know since I cant see A

Step-by-step explanation:

It’s definitely B. The answer is B

Dirk ran out of paper towels. At the store, he finds a 2-pack of Quick Clean paper towels for $1.74 and a 4-pack of Soft 'n Strong paper towels for $3.60. Which brand is the better value?

Answers

*random halloween notepad, don’t judge*

The better value is Quick Clean. Quick Clean is $0.03 cheaper per roll of paper towel.
To get there -
1. divide your price by your amount to get the unit price for one of the item (in this case paper towels)
2. do the same for your other price.
3. make sure you are keeping things labeled and separate so you know what means what :)
4. compare the two prices and decide which one answers the question you are being asked (again in this case which is a better deal)

Hope that helps!

your friend evaluates the expression when m = 10. is your friend correct? Explain your reasoning.

3m - 6 = 3(10) - 6
= 3(4)
=12

PLS HELP ASAP!

Answers

Answer:

yes

Step-by-step explanation:

3 * 10 (m) = 30 so 30 - 6 = 24. 3(10) - 6 is basically the same thing just written different, so it equals 24 too. 3(4) just means 3 times 4 ,which equals 13. Hope that made sense lol

yes ,

3•10 = 30 - 6 = 24

now when you do 3(4) you get 12 and then subtract the 12 from the 24 and you get 12

Find the area of the circle. Diameter = 12 mi

answer choice:
36π mi
144π mi

Answers

Answer:

36π mi

Step-by-step explanation:

Area of a circle = πr²

Diameter = 12 mi. Therefore, radius=12/2 = 6 mi

πr²

π x (6)²

π x 36

Hence, the answer is 36π mi

the answer to this question is 36pi

The Spurs charge an entrance fee of $15.50 and $2 per drink. The Rampage charge an entrance fee of $8 and $3.50 per drink. How many drinks, d, must be purchased in order for the total cost at the Spurs game and Rampage game are the same? A 2 drinks B 3 drinks C 4 drinks D 5 drinks

Answers

Answer:

Step-by-step explanation:

For every drink bought at the game, the difference in the cost changes by 1.50. The difference between the entrance fees is 7.50 so just divide 7.50 by 1.50 to get 5.

Answer:

D-5

Step-by-step explanation:

$2 x 5= $10 , $15.50 + $10 = $25.5

$3.50 x 5=$17.5 , $17.5 + $8 = $25.5

----------------------------------------------------------------------------------------------------------------

find the value
100cm-10mm

Answers

Answer:

99 cm

Step-by-step explanation:

100 cm - 10 mm = 99 cm

hope it helped u..

99cm because all you have to do is subtract

Astrid must pay a 15% tax on the camera that she is buying. The orginal price of thAstrid must pay a 15% tax on the camera that she is buying. The orginal price of the camera is $45.00. How much more money must Astrid pay for the tax?e camera is $45.00. How much more money must Astrid pay for the tax?
Plz Help ( * ^ * )

Answers

Answer:

6.75 dollars

Step-by-step explanation:

45 * 0.15 = 6.75

6.75 is the answer I think %90 sure

Mila buys 1112 pound of almonds and 56 pound of pecans.

Which answer is the most accurate estimate for how many more pounds of almonds she buys than pounds of pecans?

0 pounds

12 pound

1 pound

Answers

Answer:

12 pounds

Step-by-step explanation:

Someone can help me with this, Right?

Simplify the expression.
4r+(4j+3j)+4r

Answers

I’m not sure if this is right but I believe it’s 8r+7j

help me...................................

Answers

Answer:idek school is very hard

Step-by-step explanation:

I believe it’s 1.5 : 3.75, 1 : 2.5, 3.5 : 8.75, 2.5 : 6.25. Could I have brainliest if it’s right?

Other Questions

Which Latin American Country (Cuba, Mexico, Brazil) is the closest to having a pure market economy? Left handed DNA2 pointsO a) A-DNAO b) B-DNAO c) Z-DNAO d) C-DNA The cone shown has a radius of 6 inches and a slant height of 10 inches. What is the total surface area of the cone? BC =using the Distance FormulaA. 5B. 7C. 11Dont choose randomly or write just doing this for points cause its annoying and Im having an exam. Please help me Ill give you brainless its due in 20 minutes I NEED HELP ASAP!Describe Attila's actions and characteristics as positive or negative. The President can negotiate and sign treaties without Senateapproval.TrueFalse After Mike made deposits of $32.88 and $422.73 and wrote checks for $350.00, $126.13, and $41.09, he had $249.81 in his checking account. How much was in the account before this activity? 3. Find the rule for the functiontable. 4 = ? HELP PLEASE! WILL GIVE BRAINLIEST! jack simplified the expression below!Determine whether not jack is correct!if he isn't explain the mistakes and provide the correct work!{1}{3} (2x+9)+{2}{3} (4x-3) {2}{3} x+27{8}{3}x+2{10}{3}x+29PLS HELP I AM BEHIND ON MY MATH AND FAILING!! I REALLY NEED HELP PLEASE I WILL GIVE BRAINLIEST! Will Mark Brainliest...Think of a time when you had to make a decision.Write down how you handled the situation. What steps did you take? Did your decision turn out like you had hoped it would? Do you feel the decision you made was a positive one? Why or why not? This assignment is based on Exercise 8.4 from your textbook. Each of the following Python functions is supposed to check whether its argument has any lowercase letters.For each function, describe what it actually does when called with a string argument. If it does not correctly check for lowercase letters, give an example argument that produces incorrect results, and describe why the result is incorrect.# 1def any_lowercase1(s): for c in s: if c.islower(): return True else: return False# 2def any_lowercase2(s): for c in s: if 'c'.islower(): return 'True' else: return 'False'# 3def any_lowercase3(s): for c in s: flag = c.islower() return flag# 4def any_lowercase4(s): flag = False for c in s: flag = flag or c.islower() return flag# 5def any_lowercase5(s): for c in s: if not c.islower(): return False return True Write the word equation forthe reaction between sodiumhydrogen carbonate andsulfuric acid. What happens to algae when the temperature in the ocean becomes too hot? O The algae are susceptible to infection.O The algae become pale.O The algae photosynthesize faster.O The algae lose their ability to photosynthesize Which of the following statements best describes the CopperheadDemocrats?OA. They were Northern Democrats who were against the Civil War.B. They were Free-Soilers who wanted the United States to expandwestward.C. They were Southern Republicans who wanted to invade the UnionO D. They were former Whigs who were against slavery. Verify Euler's formula for(a) Tetrahedron(b) Hexagonal prism Make x the subject of the formula a = b x + c 1) Evaluate 3+ (a + 4)(8 b) when a5 and b = 6 b is 30 more than a. b is 6 times as many as a. Find the values of a and b. describe the features of ancient Greek civilization