Mathematics Middle School

solve this using substitution:
5x-y=-3
6x+y=3

Answers

Answer 1

Answer:

x=0.y=3

Step-by-step explanation:

5x-y=-3

y=5x+3

sub y=5x+3 into 6x+y=3,

6x+5x+3=3

11x=0

x=0

6(0)+y=3

y=3

Answer 2
the answer is x-0 y-3

Related Questions

R = 6
1. What is constant of 4r - 0.9?

2. 6r , What is coefficient?
What is the variable?

3. r/2 , What is the coefficient?

4. r+r+r , What is the coefficient or r after the expression is simplified?

Answers

1. -0.9
2. ‘6’ is the coefficient and ‘r’ is the variable
3. 1 is the coefficient ( there is one ‘r’)
4. 3 will be the coefficient. (r+r+r= 3r)

HElp pls for majior brainlest and points

Answers

Answer:

i think its 4-3r=1.

Step-by-step explanation:

i hope i got it right so you can make some a's

Answer:

4 -3r (B)

w (A)

3 (A)

8 (B)

2 (B)

Explanation:

Expression = (Number, Math Operator, Number)

2 horses ran from the same place from the at same time one horse ran at 2 miles per second and the other ran at a speed for 18 miles per second. how far apart were they in 1 minute? in 5 minutes? in 8 minutes?

- PLS HELP ASAP!!!!!

Answers

Answer:

1 minute = 1080 - 960 = 120 m

5 minutes = 5400 - 4800 = 600 m

8 minutes = 8640 - 7680 = 960 m

Step-by-step explanation:

I think the easiest way is to just see how far they get at each time.  So I'm going to go one horse at a time.

16 m/s

1 minute = 60 seconds, every second is 16 meters so 16 m/s * 60 s = 960 m

5 minutes = 300 seconds so 16 m/s * 300 s = 4800 m

8 minutes = 480 seconds, 16 m/s * 480 s = 7680 m

I also want to point out that unites cancel out.  m/s * s is kinda like variables so the seconds being multiplied by m/s cancels witht eh seconds in the denominator.

Now the next horse

18 m/s

1 minute totals to 1080 m

5 minutes = 5400 m

8 minutes = 8640 m

Now we take the differences of each time

1 minute = 1080 - 960 = 120 m

5 minutes = 5400 - 4800 = 600 m

8 minutes = 8640 - 7680 = 960 m

Another way to do this is to take the difference of speed and then multiply that by the time.  so 18-16 = 2, then multiply each time by 2.  For me it just makes more intuitive sense the way I showed.  

The graphs below show the increases and decreases in a company's monthly closing stock values.
If you were the owner of this company which graph would you use to show growth since March? Be sure to justify your answer with mathematical reasoning.

Answers

Answer: graph A

Step-by-step explanation:

you can see it is going up look at march then look past that to the right is it going up or down the answer is it is going up so your answer: Graph A

Answer:

Graph A

Step-by-step explanation:

I just did this on edge and got it right hope it helps and please mark me as brainliest

Simplify the following expression by combining like terms. please help me thank you!

Answers

Answer:

8x-3

Step-by-step explanation:

Combine like terms.

11x-3x=8x

(8x)

14-11=3

(8x-3)

Hope it helped!

67.5 billion in scientific notation

Answers

Answer:

6.75 × 10^10

Step-by-step explanation:

Which of these best describes Pi?

1. The square root of the area of a circle
2. The ratio of the radius of a circle to its diameter
3. The ratio of the circumference of a circle to 3.14
4. The ratio of the circumference of a circle to its diameter

Answers

The correct answer is 3 hope it helps :) pls mark brainliest

Ms. Chu gave her class 12 minutes to read. Ava read 5 1/2 pages in that time. At what rate in pages per hour did Ava read?



Plsssssss Helppp

Answers

27 1/2 pages i believe sorry if im wrong

Answer:

27.5 is correct

Step-by-step explanation:

Identify which of the following are solutions of the inequality 8r ≥ 1.8 by dragging each value to the appropriate bin.

1/5
1/4
1/3

Answers

1/4 and 1/3 because when substituting 1/4 to r you get 2 and when substituting 1/3 is 2.3 repeating which is greater then 1.8

1/4 and 1/3 are the solutions to inequality.

Options B and C are the correct answer.

What is inequality?

It shows a relationship between two numbers or two expressions.

There are commonly used four inequalities:

Less than = <

Greater than = >

Less than and equal = ≤

Greater than and equal = ≥

We have,

8r ≥ 1.8

r ≥ 1.8/8

r ≥ 18/80

r ≥ 0.225

Now,

r has to be greater than or equal to 0.23.

So,

1/5 = 0.20

1/4 = 0.25

1/3 = 0.33

We see that,

1/4 and 1/3 are greater than 0.23.

Thus,

1/4 and 1/3 are the solutions to inequality.

Learn more about inequalities here:

https://brainly.com/question/20383699

#SPJ2

plz help this is proportions math

Answers

Answer:

I would recommend using photo math its faster and easier I promise!! ;)

I think 42 is the anwser

pls answer question n picture.

Answers

Answer:

Step-by-Step Equation:

Answer:

8b^2 + 9b + 3y +5

Step-by-step explanation:

7b + 8b^2 + 3 + y + 2b + 2y + 2

8b^2 + 9b + 3 + y + 2y + 2

8b^2 + 9b + 3y + 3 + 2

= 8b^2 + 9b + 3y +5

NOTE:

the symbol '^' represents 'to the power of', so 8b^2 would be 8b to the power of 2.

Look in the comments to see the question
:)

Answers

I’m trying to looking :)

Point A is located at (-3, -6) and is reflected in the y-axis. What is the location of Point A'?
O(-3,6)
O(3,6)
O (3-6)
O(-6, -3)

Answers

Answer:

O(3,6)

Step-by-step explanation:

If the points are (-3,-6), this means -3 on the x axis and -6 on the y axis. if it is reflected in the y axis, the coordinates Change from either positive to negative or negative to positive. This means -3 is now 3 and -6 is now 6 hence the coordinates of (3,6)

What was the location of the Louisiana Purchase?

A: the central United States

B: the northwestern United States

C: the southwestern United States

D: the southeastern United States

Answers

If i’m correct it’s B

Answer:

i d  k but your luck day just learned this

Step-by-step explanation:

FACT. The signing of the Louisiana Purchase Treaty took place in Paris on April 30, 1803. Months later, the Cabildo in New Orleans was the site of the transfer of the Louisiana Territory, which finalized the acquisition by the United States. The Cabildo was built in 1799 as the city hall for New Orleans.

ik easy but im to lazy hehe
Distribute.


4(2x + 3)

Answers

Answer:

8x + 12

Step-by-step explanation:

It would be 4 x 2x = 8x + (4 x 3) = 8x + 12

Answer:8x + 12Step-by-step explanation:4 · 2x = 8x4 · 3 = 12Hope this helps!! ♥︎

am i right pls inform me if im wrong

Answers

Answer:

you are right

Step-by-step explanation:

I think it’s the second option
P over 9.20 because your doing hours you work over how much money your making

Christopher said, “I put these in order.”
-2.3, 4.75, -8.2, 12, -14.25
Beth disagrees with Christopher. She knows he is wrong. Write a statement the Beth might say to show Christopher his mistake?

Answers

Answer:

-14.25, -8. 2 karma -2.3, 4.75

Beth might say to Christopher “you have you put the negatives before the positives”

Which number is IRRATIONAL?

Answers

Answer:D

Step-by-step explanation:

The answer is D because all the others are perfect squares

plsss hurry!!!! i rlly need help

Answers

Answer:

41 21/25

Step-by-step explanation:

38 1/25 + 3 4/5 = 41 21/25

Simplify 3 33/56

PLEASE

Answers

3 33/56 is the answer
The answer is 201/56 if you mean turn it into an improper fraction, if you mean otherwise just comment on this answer and I will try my best to calculate it:)

The daily low temperatures in a city have been below 0° Fahrenheit (F) for the past two days. On Monday, the daily low temperature was −2℉ and on Tuesday, the daily low temperature was −7℉. What is the absolute value of the change in daily low temperatures between these two days, in degrees Fahrenheit?

(This is math class btw)

Answers

Answer:

5ºF is the absolute value of the change.

Step-by-step explanation:

Since absolute value is alwasy positive you will not need the negative sign. The difference between 7 and 2 is 5, so the answer is 5.

5 points..! plus brainliest..!

Answers

Answer:

4th one

Step-by-step explanation:

Answer:

Last answer.

Step-by-step explanation:

What is the volume of a cube with an edge length of 3/4 inch?

Answers

Answer:

V=a cubed

Step-by-step explanation:

Answer:

v=a3

Step-by-step explanation:

What is give an example of a unit rate used in a real world situation? Plz I'm literally so confused lol.

Answers

Answer:

Miles per hour. (mph)

Step-by-step explanation:

This can be used in almost everyday, since most people today drive around in cars, and use mph to see how fast they are going per hour.

#teamtrees #WAP (Water And Plant)

Answer:

20 miles per hour

Step-by-step explanation:

An example would be like 50 beats per minute, or 20 miles an hour.

When rates are expressed as a quantity of 1.

PLZ HELP WILL MARK BRAINLIEST(and please explain in detail I have to record myself explaining)
A chairlift starts 0.5 mi above the base of a mountain and travels up the mountain at a constant speed of 6 mph and it takes 15 minutes to get to the top. How far from the base of the mountain is the chairlift at 10 minutes?

Answers

d=1.5 miles i’m pretty sure

Which expression is equivalent to 50y2+10y?
−10y(5y+1)
10y(5y+1)
−10y(5y−1)
10y(5y−1)

Answers

Answer:
10y(5y+1)

Explanation:
When expanding brackets you multiply everything on the inside by the outside.

So 10y x 5y = 50y squared

10y x 1= 10y

Put them together now. 50y squared + 10y

Hope this helped!
10y(5y+1)


Explanation:


Shenenenewne

There are 16 tablespoons in 1 cup. How many tablespoons of cornstarch would Rhoda need to make 23 batches of green slime​?

Answers

Answer:

92 tablespoons

Step-by-step explanation:

16 tablespoons = 1 cup, in the recipe you need 1/4 cup for a batch, Rhonda needs 23 batches, so 23/4 to get the 1/4 cup, that's 5.75 cups, then you do 5.75*16 to get the tablespoons

92 Tablespoons, I think.

PLS HELPPPP I WILL BE GIVING BRAINLESS THE PIC IS RIGHT BELOW PLS IF U DONT KNOW THE ANSWER DONT ANSWER PLSSS

Answers

Answer:

The answer is 132

Step-by-step explanation:

First, find the area wholely, 20x8 = 160. Then find the triangle which is 7x 8 divided by 2 is 28 and you subtract the whole are by the triangle which is 160 - 28 is 132

The sixth graders at Amir’s school voted for the location of their class trip. 35% of the students voted to go to the art museum. If 126 students voted for going to the art museum, how many sixth graders are at Amir’s school?

Answers

Answer:

360

Step-by-step explanation:

126/35%=360

Answer:

Step-by-step explanation:

 

hi please help me lol i have no idea what this is

Answers

Answer:

coefficient: 7; constant: 2

Step-by-step explanation:

In a polynomial, a coefficient is a number that multiplies a variable.

The coefficient is 7.

A constant is a number by itself.

The constant is 2.

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