Mathematics Middle School

Solve the system by elimination.

Answers

Answer 1

Answer: x=−2 and y=−5

Step-by-step explanation: 2x−y=1;12x−5y=1

Multiply the first equation by -6,and multiply the second equation by 1.

−6(2x−y=1)

1(12x−5y=1)

Becomes:

−12x+6y=−6

12x−5y=1

Add these equations to eliminate x:

y=−5

Then solvey=−5for y:

y=−5

Now that we've found y let's plug it back in to solve for x.

Write down an original equation:

2x−y=1

Substitute−5foryin2x−y=1:

2x−(−5)=1

2x+5=1(Simplify both sides of the equation)

2x+5+−5=1+−5(Add -5 to both sides)

2x=−4

−4

(Divide both sides by 2)

x=−2

Answer 2

x=-2 and y =- 5 is the answer

Related Questions

Given DB BE

< A < C

Prove : ∆DBC ∆ AEB

Answers

Answer:

Step-by-step explanation:

<A = <C (given)

DB = EB (given)

<B = <B cuz its in both the triangles (forgot the sentence to prove it)

proved using AAS

hope this helped

What would you divide the numerator and denominator by to put 16/24 in simplest form?

Answers

Answer:

You would divide both by 4

Step-by-step explanation:

16 and 24 are both multiples of 4.

Answer:

Step-by-step explanation:

To answer this question, you need to find the common factors of each number. The factors of 16 are 1, 2,4, 8, and 16. The factors of 24 are 1, 2, 3, 4, 6, 8, 12, and 24. You then have to find the greatest common factor. In this case, it would be 8.

what is $3.57 as a decimal

Answers

Answer:

decimal: 0.0357

357%

So, 3.57 is equivalent to 357% in percent form

Step-by-step explanation:

to find a decimal move 2 decimal points to the left

to find percent move decimal 2 places to the right

Move the decimal two steps to the left

Several students measured a 25-mm-long nail and wrote the measurements shown in the table below. Whose measurement had the greatest percent error? Round to the nearest percent. (I need help ASAP!! Thanks!! <3)

Answers

Answer:

Tenicai had the greatest prectnt errou

Step-by-step explanation:

Solve for m<1 and m<2.

Answers

Answer:

M<2 =61* M< = 61

Step-by-step explanation:

You know angle 4 is 119* and the straight line is 180* so if u do 180 - 119 it is 61 , therefore 1 ,2,and 3 are 61*

Does anyone know this :-)

Answers

-37. 137732784858663652885

NEED HELP!!! What fraction of 60 is 90! WILL GIVE BRAINLY!!

Answers

Answer:

2/3

Step-by-step explanation:

what is 15\8 of 16? number answer.

Answers

Step-by-step explanation:

15/8×16= 30

Answer is 30

15/8 * 16 = 30
the way i learnt it is that of means to times

A car is traveling at a steady speed. It travels 2 1/2 miles in 3 1/3 minutes. How far will it travel in 45 minutes? In 1 hour? The car will travel nothing miles in 45 minutes.
PLEASE HURRY IM TIMED!!!!! PLEASE HELP!!!

Answers

Answer:

it will travel 18 miles in 45 min. and 30.5 in 1 hr.

Step-by-step explanation:

divide 45 by 2 1/2

divide 60 by 2 1/2

PLEASAE HELP ILL GIVE BRAINLIEST

Answers

a.) -11
b.) 31
c.) -208
d.) 12
e.) -47
f.) -28

I hope this helped (I used bedmas)

Sorry I don’t get the question

factor the expression using the GCF. 18x + 24y.

Answers

Answer: 6(3x + 4y)

1. Find the GCF (the largest number that goes into both 18x AND 24y). This would be 6.

2. Factor out the 6 by dividing each of the terms by the GCF
18x/6 = 3x
24y/6 = 4y

3. Write as a factored expression
6(3x + 4y)

What is the equation for the line that passes through the coordinates (3, 4) and (5,8)?

Answers

Find slope:
(8-4)/(5-3) = 4/2 = 2
Y = 2x + b
4 = 2(3) + b, b = -2
Equation: y = 2x - 2

math help? please and thank you!

Answers

Answer:

Step-by-step explanation:

Draw a line, then find 7 on X. Then find amount of 7 in line

The actual answer is c it’s 210

Jackie needs to save $125 to go to a concert. He has saved $35. He makes $7.50 an hour at his job.

Let x representing the number of hours.

Which equation and solution can be used to show how many hours jackie must work in order to have enough money to go to the concert?

A. 125x + 35 = 750; x = 5.75
B. 35 - 7.5x = 125; x = 6
C. 7.5x + 35 = 125; x = 12
D. 35x + 125 = 750; x = 18

Answers

Answer:

Step-by-step

Answer:

Answer is C

Step-by-step explanation:

First Jackie needs to save $125

y = 125

He already saved $35, this is our constant

He makes $7.50 an hour on his job,

Our variable x is hours

125 = 7.50x + 35

If we solve for x, we get x = 12

please answer this the best you can also the answer needs to be a fraction

Answers

Answer: 2 5/12

Step-by-step explanation:

12 3/4 15 1/6 15 2/12 - 12 9/12 = 2 5/12 Since 15 1/6 and 12 3/4 don't have the same denominator you have to find the closest denominator that they both have in common and then subtract the two fractions and then you will your difference: 2 5/12

On the number line below, the numbers h and k are the same distance from 0. Write an equation to express the value of ℎ + . Explain.

Answers

The value of h + k is 0 if, on the number line below, the numbers h and k are the same distance from 0 the answer is 0 or zero.

What is a number line?

It is defined as the representation of the numbers on a straight line that goes infinitely on both sides.

As we know,

A number is a mathematical entity that can be used to count, measure, or name things. For example, 1, 2, 56, etc. are the numbers.

It is given that:

On the number line below, the numbers h and k are the same distance from 0.

From the number line.

h = k (the magnitude of the h and k are equal)

There are all negative numbers left side of the zero on a number line.

There are all positive numbers right side of the zero on a number line.

h = -k

The value of h + k

= h + k

Plug the value of h in the above expression:

= -k + k

= 0

Thus, the value of h + k is 0 if, on the number line below, the numbers h and k are the same distance from 0 the answer is 0 or zero.

Learn more about the number line here:

brainly.com/question/13189025

#SPJ2

HELP! FINALSS!
The table below represents items on sale at a local department store.

Item Regular Price (r) Discount (d) Sale Price (s)
Detergent $7.00 $1.75 $5.25
Bath towel $9.00 $2.25 $6.75
Shower curtain $11.00 $2.75 $8.25
Toilet paper $13.00 $3.25 $9.75

Which of the following equations represents how to calculate the discount for any of these items?

A. d = r/4 x 3

B. d = r x 0.25

C. d = r/0.25

D. d = r - 1.75

Answers

Answer:hello i am a 7th grade teacher and you cant ask help for finals

Step-by-step explanation:

you shouldn’t ask for help on finals you need to do this on your own , I am a teacher

need help on part A Please

Answers

Answer:

Step-by-step explanation:

Answer:

DAM DANIEL

Step-by-step explanation:

Im sorry I had to get that off my chest

HURRY HURRY HELP MEeeeee

Answers

Answer:

dividing by 100

Step-by-step explanation:

Lucy has 27 coins that are either dimes or quarters. She has a total of $4.95. What set of equations could be used to find the number of dimes and quarters that Lucy has?

0.10D+0.25Q = 4.95D+Q=27

0.25D+0.10Q = 4.95D+Q=27

0.10D+0.25Q = 27D+Q=4.95

10D+25Q =27D+Q=495

Answers

Answer:

0.10D+0.25Q = 27D+Q=4.95

Step-by-step explanation:

3^3+5∙4−(8−5∙2)^2 = ???

Answers

Answer:

Its 43

Step-by-step explanation:

Happy Holidays ❄️☃️

I think the answer is 43, if it not I’m sorry

Jane wants to add chocolate chips to her trail mix. A 3-pound bag of chocolate chips costs $3.22. What is the unit price?
A $1.07 per pound
B 1.07 pounds
C$1.07
D $0.93 per pound

Answers

ans: A

its $1.07 per pound

ΔDEF is similar to ΔABC as shown below, and x represents the length of segment EF.

Which proportion can be used to find, x, the length of segment EF?
a. 2/5 = 6/x
b. 5/6 = x/2
c. 5/2 = 6/x
d. 6/5 = 2/x

Answers

Explaining- when you look at the vertex to the other vertex you see the length and that is when you multiply

Answer- A

What is the image point of (-9,5)(−9,5) after a translation right 3 units and down 2 units?

Answers

Answer:

-6,3

Step-by-step explanation:

Plz help me as soon as possible! Thank you

Answers

The second one :) because humans can’t produce their own food they have to buy/grow food

Answer:

Not all living things produce food. They usually need to find a source and take from it, like when animals are hunting.

So the answer is the second one.

okay so i'm doing a puzzle time and the riddle said were does the umpire like to sit when he is eating dinner eating dinner this is puzzle time 3.5

Answers

The head of the table?

helppppppppppppppppppppppppppppppp

Answers

Answer:

Step-by-step explanation:

Hi hru?

Lin baked 36 cookies. She gave some cookies to Kiran. She had 26 left. Select all the equations that represent this situation.
k = 36 - 26

36 - k = 26

26 - k = 36

36 = 26 + k
This is my cousin's h.w and it's due tomorrow so PLS help!

Answers

Answer:

36 - k = 26

Step-by-step explanation:

Lin started out with 26 cookies, and then she gave an unknown amount to Kiran, and was left with 26, so 36 - k = 26

Answer:

First, second and fourth.

Step-by-step explanation:

k could represent the number of cookies given to Kiran.

The first one is true, Lin gave 36 - 26 cookies to Kiran.

The second one is also true, Lin had 26 cookies remaining after she gave some to Kiran.

The third one is false, 26 - the amount Lin gave is not 36.

The fourth one is true, 36 is equal to the amount remaining plus the amount given to Kiran.

Hope this helps!

6/8 questions im giving brainliset for pls help me

Answers

Answer:

$38.1

Step-by-step explanation:

Add $86 to the value of -$47.90

-47.9 + 86 = 38.1

$38.10

Hope it helped

Plz help thx!!!! each box needs to be filled in! with a conjunction of IR.

Answers

1. Voy

2. Vamos

3. Van

Answer:

Step-by-step explanation:

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