Mathematics Middle School

(System word problems, 11 points asap pls)

Two numbers have a sum of 1,212 and a difference of 518.
What are the numbers?

Answers

Answer 1

347 and 865.

To solve this problem you set up two equations,

x+y=1212 and x-y=518.
You then get the second x by itself by adding y to both sides.
You then have x+y=1212 and x=y+518.
After this you substitute the x into the first equation and have y+518+y=1212.
Then simplify to 2y=694 and y=347

Now that y=347 you put it in the original equation. Solve and get that x=865

Related Questions

This is due today! Pls do not give me websites

Answers

Answer:

75 m

Step-by-step explanation:

You first divide the shape into two parts; into a square and a rectangle. Then you multiply 5 x 5, (representing the square) becomes 25. Then you multiply 10 x 5, (representing the rectangle) becomes 50. Now you add 25 and 50 to get the answer 75.

75m
Divide the shape then multiply 5x5 and 10x5 to get 25 and 50. Add them together to get 75m

You install 762 feet of fencing along the perimeter of a rectangular yard. The width of the yard is 185 feet. What is the length of the yard?

Answers

Length: 196 feet

perimeter of rectangle: 2(length+width)

==================================

Solve for length:

2(length+width) = perimeter2(length+185) = 762length + 185 = 381length = 381 - 185length = 196

Help me? I’m a poor desperate soul! In need of assistance
Select the correct answer.

A

B

C

D

Answers

Answer:

A

Step-by-step explanation:

i did it and got A

Answer:

A

Step-by-step explanation:

I hope it was A

math question please help

Answers

Answer:

C. 7

Step-by-step explanation:

According to the stem-and-leaf plot, the distances ran were:

4.3, 4.5, 5.0, 5.5, 5.6, 6.2, 6.2, 6.4, 7.1, 7.3, 8.0, and 8.4.

Counting the ones above 6.0, we have 7 students than ran 6 or more miles.

Math Question. Help me Please

Answers

Answer:

C.

Step-by-step explanation:

The answer to the question is c

Comparing Negative Numbers-
-36 ____ - 83

Answers

-83 > -36. -36 is greater than -83

Help (add why you got this answer please)

Answers

She is incorrect

On one part of the number line she wrote days and on another part she wrote hours. You can only have one label not two different ones.

Answer:

Yes.

Step-by-step explanation:

First of all, both of the dots are in the right spot. Second of all, 10 is bigger than 11. Even though there are decimals after, it still doesn't matter because the ones place is bigger.

hope this helped! :)

I'm terrible at math please help ;-;

Answers

It is 8 because those lines tell you to turn it positive
The answer is 8
The person above me is right too

A data set with a smaller MAD has______than a data set with a larger MAD brainly
A. a larger mean
B. more variability
C. more data
D. less variability

Answers

Answer:

D. less variability

Step-by-step explanation:

The MAD is mean absolute deviation which means is the average distance between each value and the mean, so if the average is smaller, the distances are smaller, meaning that there is less variability.  

The answer is D because that’s what it is

Evaluate the expression 4x^3 for each value of x. a. 1, b. 2, c. 1/2

Answers

Answer:

a. 4, b. 32, c. 1/2

Step-by-step explanation:

a. 4 * (1 *1 *1) = 4

b. 4 * (2 * 2 * 2) = 4 * 8 = 32

c. 4 * (1/2 * 1/2 * 1/2) = 4 * 1/8 = 1/2

Answer:

down below - hope this helped :)

Step-by-step explanation:

a.

4 x (1 x1 x1) = 4

b.

4 x (2 x 2 x 2) = 4 x 8 = 32

c.

4 x (1/2 x 1/2 x 1/2) = 4 x 1/8 = 1/2

Answer the question below

Answers

Answer:

B

Step-by-step explanation:

Answer:

its B i think

Step-by-step explanation:

wait, have you smiled today? its very important:)

factorise: 4x(a4+x2)−a2−x2

Answers

Answer:

Step-by-step explanation:

Ashley is going to build some large wooden storage boxes. The boxes are shaped like rectangular prisms, as shown below. She wants to cover all the sides of each box with special wallpaper. If she has a total of 1152 ft squared of wallpaper, how many boxes can she cover?

Answers

Answer: 9 boxes

Step-by-step explanation:

help please I also need help with 4 more!

Answers

Answer:

A. y is a decrease of 25% in relation to x.

B. y is an increase of 125% in relation to x.

Step-by-step explanation:

I hope this is right! Good luck!!!!!! (:

Pls help!! (20 points)

Answers

Answer: 604,375 = 600,000 + 4000 + 300 + 70 + 5.

Step-by-step explanation: I believe what's tripping you up is the fact that there are 6 digits in the number 604,375, and there are only 5 numbers to write out the actual number in equation form.  The number in between 6 and 4 doesn't count, because if you write it out, it makes 00,000, so there's no point in adding 00,000 when it won't change the equation if you add it.

The question is asking to split the number and write out the digits from the greatest to the least amount of digits.  For example, we're given 4,000, 300, and 5, which each are part of the number 604,375.  600,000 is the answer to the first blank and the blank between 300 and 5 is 70.  

Let me know if this is right! :)

600000+4000+300+70+5

Kenya dose the pole vault for her school's track team. Her record is 2 meters 86 centimetres. How many millimetres is Kenya's record?

Answers

Answer:

2860

Step-by-step explanation:

First, convert 2 meters into cm and then convert to mm. m to cm+200cm cm-mm= 2000. Then turn 86 centimetres into mm which is 860 mm. Lastly 2000+860=2860. Hope this helps

I need help please

We don’t got a teacher so we clearly don’t learn anything

Answers

Answer:

Step-by-step explanation:

We have to get

from the number that goes IN

to the number that goes OUT

using addition and subtraction.

Note:

To get from a small number to a big number will use addition and

to get from a big number to a small number will use subtraction.

1.

from IN: 11  to OUT: 26  

11 + ? = 26

Compare the two numbers by making the difference 26 - 11= 15

11 + 15 = 26

Rule: Add 15

See picture for the rest of the rules.

1. add 15
2. subtract 22
3. add 31
4. subtract 22
5. add 13
6. subtract 11
7. add 9
8. add 32
9. subtract 14
10. add 5
11. add 5

What is the volume of the prism? 100 yd cubed


150 yd cubed


200 yd cubed


250 yd cubed

Answers

Answer: the answer should be 200 yd cubed

Step-by-step explanation:

5x4x10=200

The answer is B 200 yd cubed


Explanation: because you multiply 5x4 you get 20 and then you multiply 20x10 = 200

Rohan owes $245.00 on his credit card. He makes a $120.00 payment and then purchase $60.00 worth of online games. What is the integer that represents the balance owed on the credit card?

Answers

Answer:

its 185.

Step-by-step explanation:

You would subtract the payment he made ($120) from the original balance he owed ($245), which would equal $125. However, you have to factor in the additional $60 he spent on online games (a horrible decision, really) and that would cause you to add $60 more to the debt, all in all adding up to 185. Hope his helps!

ANSWER: THe answer is $185.00 like he said.

Step-by-step explanation:

an i get a brainlisty

HELP! 6th-grade math PLEASE HELP!

Answers

first, find the area of prism ll by multiplying 5/2, 9/4, and 2

this will result in 45/4, or 11.25

now, you have to figure out how many small cubes will fit inside prism ll

we know that the side lengths of the small cubes are 1/4, and since cubes have equal side lengths, you can multiply 1/4, 1/4, and 1/4 to find the area

this will result in 1/64

divide the area of prism ll, 11.25, by the area of the small cubes, 1/64, to get 720

then, do the same thing for prism l

multiply 7/4, 3/2, and 5/4 to get 105/32

divide this by the previous 1/64 to get 210

lastly, to determine how many more small cubes can fit into prism ll, subtract 210 from 720

720-210=510

final answer: 510 cubes

hope this helped!!

PLEASE HELP I WILL GIVE BRAINLYEST

Answers

Model Height: 36.8

Scale: 1 cm : 1.25 m

First, change the scale from 1.25 m to cm. 1m=100 cm, so 1.25*100=125 cm. So the scale is 1 cm : 125 cm.To change the model height to the real height, multiply 36.8 by 125. The result is 4600 cm.Change it into meters. 4600/100=46 meters.

Answer:

try 29.44 and see if its right or wrong

Step-by-step explanation:

if its 1.25 meters per cenimeter then i thing you need to divide it by 36.8 i could be wrong but it might be right

There are 12 Snickers bars and 7 Hershey bars in a bag. The probability of drawing a Snickers bar first, not replacing it, then drawing a Hershey bar is approximately 24.6%.

Answer Choices:
True
False

Answers

Answer:

It is True

Step-by-step explanation:

there is 19 candy bars total and u drawing a snickers bar first is 12/19 then you draw a hersey bar the probability would be 7/18

It is true!!! It would be approximately 24.6%

Which quadrilateral can be classified as a trapezoid?

Answers

Answer:

a trapezoid is a shape with only two sides that are parallel. so the right answer is the light green shape with only two sides having arrows, the top and bottom. i hope that helps, have an amazing day! (:

Step-by-step explanation:

These two parts are equal in length. The attributes indicate that a rhombus can also be classified as a parallelogram and all parallelograms are also classified as a trapezoid. Since opposite side are parallel, we can classify the rectangle as a parallelogram and a trapezoid.

Which of the following is equal to 500 milliliters
A: 1/4 liter
B: 1/2 liter
C: 1 liter
D: 1 1/2 liter

Answers

Answer: B

Step-by-step explanation: One milliliter is equal to .001 liter

1000 ml is equivalent to 1 liter so B is your answer

What is the y-intercept, axis of symmetry and vertex of the following function?
[tex]F(x)=-3x^{2} -6x-5[/tex]

Answers

Answer:

Y-Intercept: -5

Axis of symmetry: -1

Vertex: (-1,-2)

Step-by-step explanation:

Y- intercept is is always the number without a variable

Axis of symmetry is the x cordirant of the vertex

Vertex: You can turn the equation into vertex form

(photo example below) (IMPORTANT: once you turn your equation into vertex form, remember that the number inside the prencencys has to be turned to the opposite sign (-/+) when you put it as a coordinate)

Yikes! Math is like a stalker keeps following me around!!!
Can y’all’s help a poor innocent soul?
What is the most approximate distance of PQ? Show your work for full credit.
A) 8.2

B) 7.9

C) 7.6

D) 7.3

Answers

Answer:

PQ=7.6

Step-by-step explanation:

a^2+b^2=c^2

3^2+7^2=c^2

9+49=c^2

58=c^2

[tex]\sqrt{58=c^2}[/tex]

c=7.615773105863908

HELLPPPPP PLLEASEE PEOPLE

Answers

Answer:

A

Step-by-step explanation:

1/3 is split but if you add it it makes 1/3

A because if you turn 1/3 into a equivalent fraction you can get 2/6 then do 2/6-1/6 and you will get 1/6

Please help quickly.

Answers

Answer:

it 25 because 10 add 5 is 15 add 7 is 22 ads 3 is 25 so that why it 25

It is 25
like the answer on top of me the explanation is on top of me

What is the sale price of a shirt that was originally $25 but that has been marked down by 33 percent?

Answers

Answer:

$16.75

Step-by-step explanation:

33% of 25 = 8.25. 25 - 8.25 = $16.75

Answer:

16.75

Step-by-step explanation:

Please HELP I WILL GIVE BRAINLYEST and 20 points

Answers

Answer:

option 1 might be the best one

Step-by-step explanation:

After all my work I conclude that it is the first one
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