Mathematics Middle School

Which equation results from adding the equations in this system?
-2 x + y = 8. 5 x - y = -5.

7 x = 13
7 x = 3
3 x = 3
3 x = 13

Answers

Answer 1

Answer:

i dont know

i am only a kid

but it is 100000000000000

hehe

Answer 2
-2x + y = 8
5x - y = -5
Add regularly
-2x + 5x = 3x
y + (-y) = 0
8 + (-5) = 3

Solution: 3x = 3

Related Questions

Han has fish tank that a length of 14 inches and a width of 7 inches. Han puts in 1,176 cubic inches of water. How high does he fill his fish tank with water? Show or explain your thinking.

Answers

12 inches
Because 14 x 7 x 12 = 1176

Emesto has painting class every 2 weeks. Kamala has a pottery class every 5 weeks. Emesto and Kamala met at the art building for class this week. how many weeks will it be unitl they see each other again?

Answers

10 weeks for Emesto and 4 weeks for Kamala

Can someone help me with this?

Answers

Begin by multiplying length x width x height.
8m x 3m x 6.6 m
8x 3m x 6.6m :))))))))

SCIENCE QUESTION BUT I HAD TO PUT IN MATH!! ILL GIVE BRAINLY TO CORRECT ANSWER (if i dont pick you brainliest lmk if you want me to post a fr33 p01nts thing so i can mark you brainliest just make sure your early so someones else doesnt take it)

Answers

Answer:

the second one is the correct answer

Step-by-step explanation:

Answer both please (middle school) ( probability)

Answers

Answer:

For the grease pencils the probability is the chance of geeting a green is 8 percent and a yellow pencil is 95%

Step-by-step explanation:

help asap plz i just cant

Answers

Answer:

(0,-7)

(1,-9)

(-1,-5)

(-2,-3)

Step-by-step explanation:

Your slope would be 2/3

I think this is right. Let me know if you know the formula and i can explain it to you!

(-6,5)

(-4,1)

(2,-9)

(-5,3)

Marcos was born in 1998. His grandmother was born forty-five years earlier. What year was Marcos' grandmother born?

A. 2043
B. 2033
C. 1954
D. 1953

Answers

Answer:

the answer is d

Step-by-step explanation:

Answer:

D

Step-by-step explanation:

1998- 45= 1953

PLEASE HELP GUYS THIS IS MY FINAL!!

Answers

Answer:

3

Step-by-step explanation:

V = h*π*r²

27π = 3*π*r²

27π = 3π*3²

27π = 3π*9

27π = 27π

Its 3, I hope you pass! I’m on my finals too.

help me with this please show work thanks

Answers

First do you need to do 5×4 which equals 20 and then you need to do 8×2 which equals 16 so your answer would be 16 at the top and then 20th the bottom

Answer:

first thing is first u have to do 5+2 =7 then do 8+4=12 your answer will be 7/12

Step-by-step explanation:

6. There are 16,709 planks on the rope bridge. If Horton crosses 7,012 planks before the bridge starts to break, how many planks are left?

Answers

Answer:

9697

Step-by-step explanation:

16,709-7012=9697

The answer is:9,697 I did I the math in my head lol

I need help with this mean, median, and averages etc. Brainliest is depending on correct answers and explanations. And don't look up answers.

Answers

original mean is, $115.15, mean is the average so you add all the previous tips then divide by 8, original median is 120, its the number in the middle when you arrange the tips in least to greatest

A park has a circular goldfish pond. The area of the surface of the pond can be found by using this formula.

A=πr2
What is the area, A, of the surface of the pond if its radius, r, is 5 feet? (Use 3.14 for π.)
A. 78.5 square feet
B. 31.4 square feet
C 15.7 square feet
D. 10.14 square feet

Answers

Answer:

A. 78.5

Step-by-step explanation:

Plug in all of your information.

A=(3.14)(5^2)

Solve in a calculator.

= 78.5

A. 78.5 square feet

What is the area, in square meters, of the shape below? Express your answer as a fraction in simplest form.

Answers

Answer:

20/3

Step-by-step explanation:

5/3 x 4/3

5x4=20

keep the denominator

20/3

- 7th grade work -

Please help, and answer only if you have an answer.

Answers

Answer:

$268.38

Step-by-step explanation:

First we will take off the 20% off the 315 dollars. SO we can do this by saying that the discounted price is 80% of the original price, (because 100 - 20 = 80). So 0.8 * 315 = 252. So 252 = discounted price. So then we have to add the tax price.

Sales tax is %6.5, so we can do 252*0.065 to find the tax payed. We get 16.38, so we can dd this to our discounted price to get 252 + 16.38, or $268.38

$268.38 is the correct answer

Doug purchased land for $8,000 in 1995. The value of the land depreciated by 4% each year after 1995. Write an exponential function.

Answers

Answer:

$6.012

Step-by-step explanation:

Answer:

Option C. $6,012

Step-by-step explanation:

Help, quickly if possible.

Answers

Answer:

the answer is B : 7

Step-by-step explanation:

Answer:

B. 7

Step-by-step explanation:

According to the word problem, Muna is dividing a piece of string that 42 2/3 long into 2/3 pieces.

[tex]\frac{14}{3} /\frac{2}{3}[/tex] (changed to an improper fraction)

Whenever dividing fractions, remember this:

SAME, CHANGE, RECIPROCAL (FLIP)

KEEP THE FIRST FRACTION THE SAME

CHANGE THE DIVISION SIGN TO A MULTIPLICATION SIGN

FLIP THE SECOND FRACTION

[tex]\frac{14}{3} *\frac{3}{2} =\frac{42}{6}[/tex]

[tex]\frac{42}{6} =7[/tex]

I, therefore, believe Muna will have 7 pieces of string.

A jar contains 2 red, 5 green, 2 blue and 6 yellow marbles. A marble is chosen at random from the jar. After replacing it, a second marble is chosen. What is the probability of choosing a green and then a yellow marble?​

Answers

Answer:

Step-by-step explanation:

The probability of picking an item A in a box of N items depends on nA, the amount of items A in the box at the time of picking, with the kinda instinctive value:

p = nA / N

then it means that if you have no green ball, the probability is 0/N = 0, if you only have green balls, it means you have a probability of N/N = 1 = 100%, and if you have as many green balls as non-green balls, you have a probability of nA/(2nA) = 0.5 = 50%.

Here the probability of first picking a green ball (nG=5) in a box of N=3+5+2+6=16 for the 1st pick is:

pG1 = 5/16

Now the trick here is that once you picked the green ball, you put it back in the box before picking another ball. So you still have N=16 balls for the second pick, and the probability of picking a yellow ball (nY=6) for the 2nd pick is:

pY2 = 6/16 = 3/8

(it would have been slightly higher, at 6/15, if you did NOT put back the green marble in the box).

Now you want BOTH events to be true. So you want G1 to be true AND Y2 to be true. The two events are independent (the probability of Y2 is 6/16 if you had G1 but is also 6/16 if you failed G1), so the probability of having both is simply done by multiplicating them:

pG1Y2 = pG1 * pG2 = 15/128

hi again i need help wit this thing? pls and ty!

Answers

Pretty sure it's { E } lol

Help i need it plsssssssssssssssssssssssssssssssss
(The thing that say ex is an example they already did it also the instruction's are at the top and there are 2 attachment's)

Answers

Answer:morse go to m’y profile picture and answer m’y question

Step-by-step explanation:

Answer:
1: right
2: acute

The volume of a large aquarium is 525 ft3. It is 23 1 3 ft wide and 3 1 3 ft high. What is the length of the aquarium​?

Answers

Answer:

199ft long

Step-by-step explanation:

Volume=length x width x hight so to find the length you would divide the volume cubed by the width and hight in order to find the length.

199 ft long because it’s W x H = 525 - 406 = 199

HEEEELLLLLLLLPPPPPPPPPP!!!!!!!!
NO SCAMS!!

Answers

Huh. What about it??

Answer:

..........???

Step-by-step explanation:

I'm confused...... sorry for taking your points

What is the value of x?

Answers

Answer:

-1

Step-by-step explanation:

Needing help on this?

Answers

Answer:

9/10-0.9-90%

The Explanation

9÷10= 0.9

0.9=90%

What is the equation for this line?

Answers

I believe that the equation would be y=1/2x

To the nearest inch how many inches are in 19 meters?

Answers

Answer:

25

Step-by-step explanation:

just bc

Answer:

To the nearest inch there are 748.031 in 19 meters.

Hope this helps!

Brainliest??

plz help meeeeeeeeee​

Answers

y = 2.2x

to check let’s plug in numbers

6.6 = 2.2(3)
6.6 = 6.6

since it’s true it’s most likely the right answer :)

PLS HELP
What is the greatest common factor(gcf) of the expression 4a3b2 + 6a2b + 8ab3?

a
2ab
b
24ab
c
2a^3b^3
d
24a^3b^3

Answers

Answer:

2ab is the answer! :)

Step-by-step explanation:

please help with this anyone

Answers

You distribute the 4 to both x and 5. 4 times x is 4x and 4 times 5 is 20. Divide both sides by 4. X=5

Domarina is making bracelets. she needs 62 cm of gold wire for each bracelet. A roll of wire has 3.10 meters. How many bracelets can she make from one roll of wire.

Answers

Answer:

5

Step-by-step explanation:

To figure this out you first need to find how many centimeters 3.10 meters is worth. 3.10m=310cm. Then, since each bracelet needs 62 cm, you just do 310/62. 310/62=5 So you can make 5 bracelets with one roll of wire.

PLEASE HELP WITH THESE QUESTIONS

Answers

Answer:

32

Step-by-step explanation:

8X4

Answer:44.56637

Step-by-step explanation:

12.56637+32=44.56637

Other Questions
PLEASE HELP ALL LINKS GIVEN WILL BE REPORTED An author wants to show that a character is old and nearing his or her death. What season would be an appropriate setting to introduce the character to the audience? (5 points) x = 15, x = 5; (0.75) Quieres tacosenchiladas?OyeOpero How is the environmental problem caused by humans? Describe the specific human activity that causes this problem.Your response should be about 2-4 sentences long, or it may be written as bullet points The mass of a carbon atom is 1.994 10-23 grams. The mass of a hydrogen atom is 1.67 10-24 grams. What is the difference of their masses? I own 1 mini fish and 2 giant fish each giantfish weighs 3 times as much as minfish. If my mini fish eats my two giantfish, then how many times more weight will my mini fish have now than before Drag the tiles to the correct boxes to complete the pairs.Match the characteristics with the phylum.water vascular systemtentacles with stinging cellsmolting for growththe presence of mantleArthropodaCnidariaMolluskaEchinodermata does anyone know this If the variable step is set to equal 5 and then the code reads step = step + 2, what will step now equal?0257can someone actually help instead of taking points please how do i do this? i dont know how why ironic by alanis morissette isn't ironic The climax of a story is in the introduction.TrueFalse what kind of leader was Huey Long? A man walks into a convenience store where his wife works and threatens the maleclerk behind the counter with a gun, telling him "Give me all the money and nobodygets hurt." The clerk makes a move, and the man hits him with the gun. The clerk fallsto the ground and the man steals the money. In addition to robbery or attemptedrobbery, which crime could he be charged with?A. domestic assaultB. simple assaultC. aggravated batteryD. mayhem A soccer ball is kicked from the top of a 64 ft building into the air at an initial speed of 48 ft/sec. Its flight as a functions of time can be modeled by: h(t)=16t2+48t+64. After how many seconds, will the soccer ball hit the ground (h=0)? We have discussed the types of feature story, give a type of feature article that you can write. How do you write this type of article? Use blue font color for your responses. Genocide occurred in Guatemala in 19811983 because the Guatemalans wouldnt give Mayans back the land they stole. the Guatemalans had not trusted the Mayans for many centuries. the Mayans took over the government and massacred Guatemalans. the Mayans demanded to be part of the Guatemalan government. A marathon had 567 runners registered. Of these runners, about 0.7% completed the race in under 2 h 12 min. How many runners completed the race in this time? Please help me thanks pleaseI will give you brainlest