Mathematics Middle School

Which system of equations has a solution of (–3, –1)? NO LINKS OR SAYINGS
A: y = –3x – 10
y = x + 4

B: y = –3x – 1
y = –x – 3

C:y = 2x – 1
y = 5x + 2

D:
y = 2x + 5
y = 5x + 14

Answers

Answer 1
The answer is b my friend
Answer 2
The answer is D. First you distribute 5 to the top equation so the two x variables can cancel out.
5(y=2x+5) the result would be 5y=10x+25

Then take the other equation and distribute -2 into it since a negative and positive cancel out. It would look like this:
-2(y=5x+14) the final product would be -2y=-10x-28
With this you can now add the two equations. So,,
+5y=10x+25
-2y=-10x-28
You add the like terms and end up with 3y=-3. Divide the 3 from 3y to the other side This gives you the y value(-1).You can now look for the x value by replacing the y from one of the two equations. You add like terms and end up with a x value of -3.
In conclusion the answer to your question is D. Y=2x+5. Y=5x+14

Related Questions

Help please T^T i shall give the right answer brainliest

Answers

Answer:

C? i think its c

Step-by-step explanation:

I think think Think Think

Answer ITS A IYTA AAAAAA

Which numbers are a distance of 2 units from 8 on a number line? A number line ranging from negative 10 to positive 10.

Answers

Answer:

6 and 10

Step-by-step explanation:

Answer:

positive 6 and positive 10

Step-by-step explanation:

when you add 2 to 6 you get 8

when you subtract 2 from 10 you get 8

Solve with systems of elimination
3x+5y=25
X-2y=-6

What is the solution?

Answers

Answer:

4

Step-by-step explanation:

Answer:

Step-by-step explanation:

x= 42/131 , y= -132/131

Kareem and Julio have a rectangular model train layouts that are similar to each other. Julio's layout is 4 feet by 7 feet. Kareems layout is 6 feet wide. What is the length of kareems layout?


(Pls pls make sure to have a step by step explanation)

Answers

The ratio for Julio’s train layout is 4:7 or 1:1.75
The ratio for Kareem’s train has to be the same ratio to be a similar layout
If you multiply 6 by 1.75, you can find the length.
6 times 1.75 is 10.5
This means the ratio is 6:10.5 and so length is 10.5

Answer swiftly Plssss

Answers

I think its C or D but I am not sure

sorry

Answer:

The answer is B.

Step-by-step explanation:

A = -34

B = -18

C = 270

D = -34

What is the reciprocal of −3 2/7?

a.−3 7/2

b.−2 3/7

c.−7 2/3

d.3 2/7

Answers

D.
No explanation needed

− 7/12x=3.85 helllllllllllllllllpppppppppppppppppppppppppppp

Answers

Answer:

it false

Step-by-step explanation:

I did it beforehand just trust

Answer: The answer is -6 3/5

Step-by-step explanation: I took the K12 test and got it correct.

Help again I just suck at word problems

Answers

Answer:

child is 4 feet tall

Step-by-step explanation:

6/15=0.4=x/10

4/10=0.4

the kid is 4 feet.
6/15 = 0.4
0.4 times 10 is 4 feet

PLeaseeee helppppp
ALSO, THE SELECT BOX SAYS NO OR YES so like no I don't agree with this or yes I agree with this PLEASE HELP TYSM IF you DOOOO

Answers

Answer:

Hewo friend :3

No, if she sells 35 movie posters she will have 35 left which is half of 70, to keep if equal half of 40 would be 20…..the ratio would be 35/20…… to keep the same ratio she should sell 20 posters

HELP I NEVER LEARND WITH BLOcKS IN ALGEBRA

Answers

3 blue rectangular cubes and 2 orange square cubes

An object that weighs 1 on Earth weighs 1.19 pounds on Neptune. Suppose a dog weighs 9 pounds on earth. How much would the same dog weigh on Neptune?

(40 points!)

Answers

Answer:

f 1 pound on Earth is equal to 1.19 pounds on Neptune all you have to do is multiply the number of Earth pounds by their Neptunian equivalent: 9x1.19=10.71 the dog would weigh 10.71 pounds :) I hope this makes sense :)

Answer:

They will weigh 10.71 on Neptune

Step-by-step explanation:

We can write a ratio to solve

1 Earth              9 Earth

--------------  = ---------------

1.19 Nept           x Neptune

Using cross products

1x = 1.19 * 9

x =10.71

They will weigh 10.71 on Neptune

HELP ME H PLZZZZZ??????

Answers

Answer:

1 is A

2 is C

3 is None

4 is B

your welcome

9(8-x)=3x PLEASE SOLVE AND SHOW YOUR WORK PLS IN EXPLANATION IF YOU DO I WILL DEFINENTLY GIVE BRAINLIEST TYYYYYYYYYYYYYYYYYYYY :>>>>>>>>>>>>>>>

Answers

9(8-x)=3x
72-9x=3x
72=12x
x=6
Using distribution you do 9*8=72 then 9*(-x)=-9x
72-9x=3x
In both sides +9x
72=12x
Divide by 12
X=6

If m = 16 and n = 4, what is the value of the following expression?
m - 2 • n + 2

Answers

Answer:

10

Step-by-step explanation:

Use PEMDAS to rewrite the equation as:

m - (2 * n) + 2 =

16 - (2 * 4) + 2 =

16 - 8 + 2 =

10

Answer:

When m = 16 and n = 4, m - 2 * n + 2 = 10.

Step-by-step explanation:

m - 2 * n + 2

Substitute values given

m = 16

n = 4

16 - 2 * 4 + 2

Multiply -2 and 4.

16 - 8 + 2

Subtract 8 from 16.

8 + 2

Add 8 and 2.

10.

If the original expression had parenthesis, please let me know as this answer would need to be edited.

PLS HELP
Match the equation to the type of solution. Put the letter of the type of solution next to the equation.
_______ 3=3 A. One Solution
_______ x=0 B. No Solution
_______ 4=-2 C. Infinitely Many Solutions

Answers

Answer:    |3=3 C|  |x= 0 C|  |4=2 A|

Step-by-step explanation:

1.3=3 C
2. x=0 C
3. 4=-2 A

+~-PLEASE HELP I WILL GIVE BRAINLIEST-~+ :))))))))

Answers

Answer:

-14 or A

Step-by-step explanation:

whats 34+35 I NEED HELP

Answers

Answer:

34

+35

=69

Step-by-step explanation:

Answer:

34+35=69

Step-by-step explanation:

4+5=9

3+3=6

put that together and u get 69

How to show 5 1/4 divided by 3/4

Answers

Answer:

The Answer is 7.

Step by Step Explanation:

Answer:

step 1: make 5 1/4 to 21/4

step 2: do keep change flip ex: 21/4 times 4/3

step 3: now just do the problem 21 times 4 is 84 and 3 times 4 is 12

step 4: your answer is 84/12 and simplified to whole number 7

hope this helps :)

Step-by-step explanation:

PLSS HELP ASAP!!!!!!!

Answers

Answer:

°4y(10-y)=28

°4(10-y)=28

°10-4y=28

°4(y-10)=28

Elisha recorded the temperature for 5 days. When he added thr 5 temperatures together he got a sum of -7.4 c.If he recorded these numbers: -8.1 c , -7.4 c, 5.5 c, 6.2 c but was missing 1 record, what was the missing temperature?

A. -8.1 c
B. -3.6 c
C. -1.9 c
D. 2.3 c

Answers

Answer:

B. -3.6 c

Step-by-step explanation:

ANSWER:
B. -3.6 c

WORK:
7.4 = (-8.1) + (-7.4) + (5.5) + (6.2) + ?

? = -7.4 - [(-8.1) + (-7.4) + (5.5) + (6.2)]
? = -7.4 - (-3.8)
? = -7.4 + 3.8
? = -3.6

Tyrone likes to snack on his big bag of candy. He takes 8 pieces of candy from the bag each time he snacks. After eating 18 snacks, there are only 6 pieces of candy remaining in the bag.
The number c of pieces of candy remaining in the bag is a function of s, the number of snacks Tyrone eats.
Write the function's formula.
c=_____

Answers

Answer:

c= ur mom

Step-by-step explanation:

solve the equation
will mark brainlest

Answers

Answer:

X = 4.2 or 4 1/5.

Step-by-step explanation:

Subtract 4/5 from 5, and you get 4.2 or 4 1/5.

Plz mark me as brainliest. hope this helps.

pls help me with my Math Vocabulary

Answers

hypotenuse, leg, rise, run, not sure of last one
Hypotenuse, leg, rise, run, continuous

Can u please help meee

Answers

Answer:

C

Step-by-step explanation:

Alberto sanded a wooden floor with his electric sander at a constant rate. Suppose he sanded 40 1/2 square feet of floor in 3/5 hours. How large an area would he have sanded in 1 hour?

A. 48 3/5 square feet in 1 hour

B. 67 1/2 square feet in 1 hour

C. 76 1/2 square feet in 1 hour

D. 80 1/2 square feet in 1 hour

Answers

Answer:

B) 67 1/2 ft per hr

Step-by-step explanation:

40 1/2 ÷ 3/5 can be rewritten as:

81/2 × 5/3 = 405/6

405/6 = 67 1/2

i believe it would be B because 40.5 divided by 3 is 13.5 and that times 5 is 67.5

The temperature is 1°C below zero.

Which integer represents this temperature?


−1

​+1

Answers

Answer:

-1 is the answer :)

The answer will be +1

Step-by-step explanation:

If it is 1 below it will go to 0 and still be positive.

Hope this helps!

which table has a constant of proportionality between y and x of 8/5 choose 1 answer.
(10 Points if solve) please answer this perfectly/correctly.
This is on Khan Academy
* Thanks *

Answers

Answer:

A

Step-by-step explanation:

y/x = slope

slope = 8/5

16/10=8/5

The answer is a I believe

Ratios and Rates word problems

A Ferris wheel accommodate 75 people in 30 minutes . how many people could ride the Ferris wheel in 6 hours? what was the rate per hour?

Answers

Answer: The ferris wheel could accomodate 900 people in 6 hours. The rate per hour was 150 people.

Step-by-step explanation:

To start off we can find the number of people by deciding how many time slots of 30 minutes are in 6 hours. Since 30 minutes is half an hour we just do 2 times 6 which would give us 12. Since 75 people can fit in 30 minutes then we do 12 times 75 for the whole 6 hours which comes out to 900.

Once we have the number of people in 6 hours then we can find the hourly rate. To do this we just take the number of people (900) in the whole time (6 hours) and divide 6 from 900 which would give us the hourly rate of 150.

Answer:

900 people

Step-by-step explanation:

One hour is 60 minutes, and the number of thirty minutes in an hour is two. To get the number of thirty minutes in 6 hours, you would do 2 x 6, which is 12.  After this, you would do 12 x 75 since 75 people ride it in 30 minutes. This equals 900.

I hope it helped!

Which two points on the number line are opposites?

Answers

Answer:

points B and C

Step-by-step explanation:

B and C are the points that are opposite in this number line

Answer:

b and c

Step-by-step explanation:

there both the same distance away from 0

PLEASE HELP GIVING BRAINLIST TO THE CORRECT ANSWER IT'S DUE TOMORROW! D:

Nadia charges $6.50 an hour for babysitting. She babysits 19.50 hours the first week of the month and 19 hours the second week of the month.


Suppose Nadia raises her rate by $0.65 an hour. How many hours would she need to work to earn the same amount of money she made in the first two weeks of the month?


Complete the explanation and give your answer.


Nadia's new hourly rate is $___ .She would need to work ___ hours in the next two weeks to make the same amount she made in the first two weeks.

Answers

Answer:

Her new hourly rate is $7.15. She would need to work 35 hours  in the next two weeks to make the same amount she made in the first two weeks

Step-by-step explanation:

6.50+.65=7.15 which is the new hourly rate

19+19.50 to find how many hours in total which is 38.5 hours

you multiply the rate of 6.50 by 38.5 and you get $250.25 in 2 weeks for the old rate.

I just multiplied until I found the amount of hours to make 250.25 with the new rate.

7.15x35=250.25

Answer:

New hourly rate: $7.15

Total number of hours: 35

Step-by-step explanation:

$6.50 per hour:

Given Nadia's hourly rate of $6.50:

For the first week of the month, she babysits for 19.50 hours:

$6.50 per hour × 19.50 hours = $126.75  (Week 1)

For the second week of the month, she babysits for 19 hours:

$6.50 per hour × 19 hours = $123.50 (Week 2).

For those two weeks, she worked for a total of 38.50 hours, and earned $250.25.

$6.50 + $0.65 per hour increase:

Nadia increased her hourly rate by $0.65, which means that her new hourly rate will be: $6.50 + $0.65 = $7.15 per hour.

Since we need to determine how many hours she needs to work for in the next two weeks to make the same amount as she did in the first two weeks, we could divide her weekly earnings by her new hourly rate for babysitting:

Week 3:

Divide Nadia's earnings for week 1 by $7.15:

$126.75 ÷ $7.15 = 17.72 hours

Week 4:

Divide Nadia's earnings for week 2 by $7.15:

$123.50 ÷ $7.15 = 17.27 hours

Week 3 + Week 4 hours = 17.72 + 17.27  = 34.99 or 35 hours

If you multiply her total working hours for weeks 3 and 4 by her new hourly rate:

35 hours × $7.15 per hour =  $250.25  (This matches her total earnings for Week 1 and 2).

Therefore, Nadia's new hourly rate is $7.15. She would need to work for 35 hours in the next two weeks to make the same amount she made in the first two weeks.

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