Mathematics Middle School

Find the Y-Intercept
-3x + 7Y = 21

Answers

Answer 1
The answer is 3
Trust me dog
Answer 2

Answer:

(0, 3)

Step-by-step explanation:

To find the y-intercept of a linear equation, we simply need to put the equation into "slope-intercept" form.  This will allow the y-intercept to be shown as the constant being added to the equation.  To put a linear equation into slope-intercept form, we simply need to solve for Y.  Let's do that.

-3x + 7Y = 21

3x + -3x + 7Y = 3x + 21

7Y = 3x = 21

(1 / 7) * 7Y = (3x + 21) * (1 / 7)

Y = (3x / 7) + (21 / 7)

Y = 3x/7 + 3

Now that we have the Y isolated, we can see the constant being added is 3.  Hence, the y-intercept is (0,3) since by definition the y-intercept is the point at which the line crosses the x axis (where x = 0).  If you plug x=0 into the equation, you get Y = 3.

Cheers.

Related Questions

Helppppppppppp.......... Pls

Answers

Answer:20

Step-by-step explanation: I think the answer is 20 because if u do 20 times 4 it equals 80, so the answer would be there are 20 sodas.

the Answer is 20. A calculator is the best way to get the answer for this question

if the temperature of the water were to increase to 38 degree Celslus, how do you think that might affect the fish

Answers

It could would make the gold fish breath faster because as the warmer them increases so will there breathing.

ANSWER ASAP GIVING BRAINLIEST AND FIVE STARS!

Please answer the following essay question:

Describe how a newspaper is organized. Why do you think the stories, pictures, advertisements, and cartoons are laid out the way they are?

Answer in paragraph form using 5-7 complete sentences.

Answers

It’s organized on which is more important and which is least important and they Wright about a subject then they put a picture to tell you about it

Answer:

 A newspaper is organized in a logical format. The front page has the most exciting news of the day. The editors determine what is most newsworthy for their readership. The A-section contains world and national news; the B-section contains local news. Some of the categories include entertainment, local news, national news, classified advertisement, and neighborhood news. They are laid out the way they are because they want to catch the reader's eyes. They want the reader to look at the newspaper and think "oh that looks interesting."


A y = 3x + 2
By=-3x - 6
C y = 3x - 6
Dy=-3x + 2

Answers

Answer:

C

Step-by-step explanation:

Use the hundredths grid to answer the question. A 10 by 10 grid is shown with 9 columns shaded and 1 row shaded with squares that overlap. Describe the decimal multiplication equation and product shown by the model. Include details of where each part of the equation is found on the model.

Answers

Answer:

A 9%

Step-by-step explanation:

There are 100 boxes and only 9 are shaded so a fraction of that would be 9/100 so if you convert that to a percentage it would be 9% of the boxes

so therefor 9% is you answer

HELP ME I NEED HELP PLEZ :(

Answers

The answer is 3 remember PEMDAS

A local school donated canned goods to help the community. Cans were packed into boxes each weighing 16.4 pounds. The volunteers packed 9 boxes. How many total pounds of food did they collect?


A.

97.6


B.

147.6


C.

976


D.

1,476 help Asap

Answers

Answer:

B 147.6 that the only one that seems reasonable to me

Step-by-step explanation:

can i have brainiest [tex]please[/tex]

HELPP PLZZZZ!!!!!!!!

Answers

108y-52y= y 56 Years Old

A linear function models the height of a burning candle. Candle A comes out of the mold at 211 ​mm and is expected to be at 187 mm after 8 hours of burning. The model for Candle B is h=240-8t ​, where h is the height in millimeters and t is the time in hours. What are the initial values for each​ candle? What do the initial values for each candle tell​ you?
Use a pencil and paper. If the candles begin burning at the same​ time, can they ever be the same​ height? Explain.

The initial value for candle A is...... mm

Answers

Answer:

Step-by-step explanation:

h=196 and t=4 hours

196=220-xt, so -24=-xt

24=xt

24=4x

x=6

h=220-6t. units in mm

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

For B, 290-5(4)=290-20=270 mm, initial value of height.

Given the table below. Write the corresponding equation.
y = 1/2 x
y = -2x
y = 2x + 5
y = 2x

Answers

The answer is y=2x
Trust me
Y=2x that is the correct answer

Which of the expressions are equivalent to the one below? 5x(3+7)

Answers

3×(2+6)+4×5 is/= 44,

3×2+3×6+4×5=44

5×4+3×(6+2)=44

(6+2)×3+4×5=44

3×2+(6+4)×5= 56

So your answers are A, B, and C.

Step-by-step explanation:

..Calculator

Answer:

B, C

Step-by-step explanation:

3 times (2+6) + 4 times 5

3 times 8 + 20

24 + 20

44

B. This is the same equation but rewritten

C. This is the same equation but rewritten

50 movie tickets were sold. 2/5 of the tickets were for children.

Answers

Answer:

20 | 30

Step-by-step explanation:

Multiply 2/5 by 50 to find the tickets for children

2*50/5

= 100/5

= 20

To find the tickets sold for the other party we subtract 20 from 50

50 - 20

= 30

Answer:

20 children got tickets.

Step-by-step explanation:

20/50 = 2/5

Hope this helps ya!!

Write 8 x 8 x 8 x 8 x 8 in exponent notation and evaluate the expression.

Answers

Answer:

8⁵ = 32768

Step-by-step explanation:

Which statement is correct about the product of ​423​ and ​78​?

a Because 78 is greater than 1, the product of 423 and ​78​ is greater than ​423​.

b Because 78 is less than 1, the product of 423 and ​78​ is less than ​423​.

c Because 78 is greater than 1, the product of 423 and ​78​ is less than ​423​.

d Because 78 is less than 1, the product of 423 and ​78​ is greater than ​423​.

Answers

A. Is the answer...

Yes yes yes yes yes

Answer:

A

Step-by-step explanation:

What is the greatest possible value of a in the system of equations 5a + 2b = 0 and ab = -10?

Answers

Answer:

it's either a=  −3b−c/2

Or b=   −2a−c/3  

Step-by-step explanation:

Not sure and s-u-p-e-r late lol-

Please help with this question about functions




FIRST BLANK CHOICES; 12,13,-12,-13


SECOND BLANK CHOICES; Increases, Decreases, Constant.


Please answer ASAP and correctly, this is a post test (huge part of my grade)

Answers

The first one is -12 and the second I think is negative but I’m not so sure

Pls answer #2! I will mark brainlist and 5 stars :)

Answers

Agricultural
Give brainliest
The answer would be Agriculture

I need help with the rest of them PLEASE!!!!

Answers

We can’t see anything you should ask the question again!

please help me answer this FAST

Answers

Answer:

5 Months

Step-by-step explanation:

If you set it up as an eqation, then the equation should be:

450+40x=975-65x.

If you solve for x, you should get 5

I'm not entirely sure of this answer. I'm just trying to help you. Have a good day!

estimate the sum using front end estimation.
546 + 412 =
Answers: A. 900 B. 950 C. 960 D. 1000

(I think it's 958 but I would drop it to 950.)

Answers

Answer:

C.950

Step-by-step explanation

yes you would round down to 950

Answer:

D

Step-by-step explanation:

using front end estimation it would be d 1000

Front end estimation is the first number that you are rounding , it would either be 900 or 1000. its not rounding to the nearest 10 it's to the nearest hundred.

If it was to the nearest 10 it would be c 960. its not so its 1000

-19 + __ = -48 what is the unknown addend plz

Answers

Answer:

-29

Step-by-step explanation:

Answer:

-29

Step-by-step explanation:

-19+-29=-48

negative + negative = negative

help me answer these questions please for e , b and d please I know that a is 32 and I think c is 20 I think​

Answers

What text book do you have?

How do U do I that I do my work different lemme know how your teacher does it

Graph the line y=3/2x-1

Answers

U would start at the point -1 and the go up three and go to the side 2

The graph of the equation is attached

How to make the table of values for the graph

To create a table of values for the equation y = (3/2)x - 1, you can choose different values for x and calculate the corresponding values for y. Here's an example table with x-values ranging from -2 to 2:

x y

-2 -4

-1 -2.5

0 -1

1 0.5

2 2

To find the corresponding y-values, substitute each x-value into the equation y = (3/2)x - 1 and solve for y.

For example,

when x = -2, you get y = (3/2)(-2) - 1 = -4.

Similarly, when x = -1, y = (3/2)(-1) - 1 = -2.5, and so on.

Learn more about Graph the line at

https://brainly.com/question/29752649

#SPJ6

Can Someone help me?

Answers

Answer: what is the answer

Step-by-step explanation:

Answer:

Step-by-step explanation:

5. A. 0.008 or 1/125​

b. 0.008

c.0.06666666667

d0.008

6A 2.777777778 or 25/9

b9/25​ or 0.36

c1.666666667 or 5/3

d2.777777778

The figure is made up of a semicircle and a triangle. Find the perimeter. Round your answer to the nearest hundredth.

Answers

Answer: 70.25

.................

PLEASE HELP ASAP!!!!!!!! I ONLY HAVE 20 MORE MINUTES AND I HAVE LIKE EIGHT MORE QUESTIONS!!!

Answers

Answer:

I'm pretty sure its -4-12x but I could be wrong

Step-by-step explanation:

First I tried to solve for x but got -12x+4 so to get 4 on the other side of the equation I subtracted and got -4-12x I hope this helps :)

WHO EVER ANSWERS IT RIGHT I WILL MARK BRANLEIST!!! I HATE MATH!!

Answers

Answer:

1) 6.8127*10^16

2) 2.9544*10^24 in scientific notation.

Step-by-step explanation:

for problem 2, I added the four masses and then divided by 4 to get the answer 2.9544*10^24 or 2.9544e24.

1. 6.8127*10^16
I only know 1 sorry

Helpppnmejhhhhhhhhhhhg pls

Answers

Answer: 32

Step-by-step explanation: you do 7 divide by 1 and (3/4). then mulltiply it by 8

32 miles because you do 7/1.75=4 then 4x8=32

what is the answer to 3 x - {-4 x} +12?

Answers

Answer:

7x+12

Step-by-step explanation:

since its neg, it take out { and } it no use.

if its like that, you add it.

so the equation: 3x+4x

that is 7x

+12 is after

so you do 7x+12

you can't simp it. So that is the answer

100% SURE

answer: x=-7/12

3x+4x=7x
7x+12
7x=-12
x=-7/12

Find the constant prop!

Answers

Answer:

the person under neath Me is right it's D

Step-by-step explanation:

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