solve using substitution method

X-7y=10 X=2y​

Answers

Answer 1

Answer: (-4,-2)

(2y)-7y=10

-5y=10

y=-2

X=2(-2)

X=-4

(-4)-7(-2)=10

-4+14=10

10=10


Related Questions

Factorise the following:
a) x + 3x - 4
b) x - 2x - 3
c) x + 2x - 8

Answers

Are they supposed to be quadratic equations? Is it x^2 +3x -4 etc?

Ana cuenta una noticia a 5 personas. A la hora siguiente, cada una de ellas se la cuenta a otras 5, y así sucesivamente. ¿Cuánto tardan en conocerla 3 000 personas?

Answers

Answer:

3 horas si se toma apartir de lo que se dice en el problema

please help me with thisssss!!!!!!

Answers

Its either 2/5 or 4/5

Answer: The answer is 2/5  hope i helped! Mabye brainliest? ^^

Step-by-step explanation: if you can pick more than 1, pick 2/5 and 4/5

The table below represents a function. Which of the following equations could be its function rule?

Answers

Answer:

it's the 3rd choice, Y= -3x

Find the percent of decrease from 22 songs to 12 songs. Round to the nearest tenth of a percent if necessary.

Answers

Answer:

I am pretty sure the answer is 45%

The crew is taking 3 bags of rice. Each bag of rice has a mass of 6 kilograms. How many
grams of rice are they taking?

Answers

Answer:

18,000 grams of rice

Step-by-step explanation:

First multiply 3 x 6 to find out how many kilograms total the crew is carrying. Then convert the 18 kilograms into grams by multiplying by 1000.

Hope it helps!

In WXY y=3.6 w=6 and X=147

Answers

Answer:

[tex]wxy = 6 \times 147 \times 3.6 \\ = 3175.2[/tex]

A loan of $25,000 has an annual simple interest rate of 5.5%. The total cost of the loan is $38,750.
How much total interest will you pay?

How long does it take to repay the loan?

Answers

You will pay about $134407323


Step by step explanation;

HELP WILL GIVE BRAINLIEST!!! Solve for x

Answers

Answer:

x=32

Step-by-step explanation:

180-122=58

58+90+x=180

148+x=180

32=x

Simplify to find the quotients . 24. ) (a ^ 8)/(a ^ 3)

Answers

Answer:

a^5 is the answer

Step-by-step explanation:

a^8 / a³

= a^8 - 3

= a^5

Answer:

a^5

Step-by-step explanation:

Can someone explain the steps on how to do this equation?
(Solving Systems of Linear Equations By Graphing)

Answers

Answer:

4,-5^5=5×+89+666+999+777

I need help with these ASAP their due tonight and I have no idea what I’m doing

Answers

Answer:

8)RS=18

9)XY=6

10)Angle T=50

11)UE=22

12)SU=38

15)BS=16

I am SOOOOO sorry that I didn't answer 13 and 14, I couldn't really figure them out. :(

Step-by-step explanation:

Coupon A-14$ rebate on 77$ jacket

Coupon B- 15% off on a 77$ jacket

Answers

Coupon A is the better option

What inverse operation should be used to isolate the variable in the equation j ÷ 12 = 50?

Answers

Answer:

600

Step-by-step explanation:

50x12=600 you can check this by doing 600/12=50

Answer:

multiplication

Step-by-step explanation:

by multiplying the variable, j, by 12 it isolates the variable.

Help! Sorry if it’s hard to see it would not look different everytime I retook the picture! :)

Answers


Answer:

d = 11.401754

For:
(X1, Y1) = (5, 4)
(X2, Y2) = (-4, -3)


Distance Equation Solution:

=√ (-4−5)2+(−3−4)2

=√ (-9)2+(−7)2

=√ 81+49

=√ 130

=11.401754

Find the measure of

Answers

Answer:

m∡GHI = 21°

Step-by-step explanation:

Since the lines are intersecting, GHI and JHK are opposite angles, so they are the same measure.

That means you can set them equal to each other

x + 7 = 3x - 21

x = 14

Now plug x into GHI

14 + 7 = 21

m∡GHI = 21°

Please help me out with this guys

Answers

To find the x- intercept, suptitude in 0 for y and solve for x

I already asked this but no one answer so I'm asking again what shape is this ​

Answers

Octagon!

I hope this answer helped! please rate 5 stars >:)

Answer:

That's an octagon since it has eight sides.

the graph of part of linear function G is shown on thw grid. which inequality best represents the range of the part shown?​

Answers

It should be -9 < x <= 2

Finding missing angles

Answers

There’s no picture thanks for the points tho

thank for the pint but what is the qestion

What is : -4x + 3 = -11

Answers

Answer:

3.5

Step-by-step explanation:

-11-3, then that divided by -4.

3.5,,, is correct good luck girl

Solve the equation for the red variable

Answers

i think c = p+ r because you firstly have to rearrange the equation so that you isolate the -c. which means you get -c = p-r because you have to change the sign of the r when you switch it. so -c = p-r, but to find c that isn’t minus you need to change the sign on both sides. therefore, the answer should be c = p+r.

HELP! I WILL GIVE BRAINLIEST!!!!!!!!!!!!!!!!!!!!!

Answers

Answer:

Step-by-step explanation:

The answer is A

Mark said he can decompose five six into three fractions with three different numerators and the same denominator is this possible explain

Answers

Answer:

1/6 ; 2/6 ; 2/6

Step-by-step explanation:

To split 5/6 into. 3 different fractions with the same denominator and different numerator values;

The integer value of the numerator 5 can be divided into 3 different whole Number values ;

It could be :

5 = 3 + 1 + 1

5 = 2 + 2 + 1

Hence, we could have ;

3/6 +. 1/6 + 1/6

Or

2/6 + 2/6 + 1/3

Simplify 8(x - 4)

8x - 4
8x - 32
x - 32
x - 4

Answers

Answer:

8x-32

Step-by-step explanation:

multiply 8 with both terms

8(x-4)8x-32answer is option b

please mark this answer as brainlist

Please help me out fast. And make sure to Write and solve an inequality. Or it isn't right.

Answers

Answer:75x+160

8 is the answer exactly 8

Step-by-step explanation:

Answer:

Set variable d for number of days: 75d + 160 < 760; 75d < 600; d < 8. The van has to be rented for less than 8 days for the family to spend less than $760.

SOMEBODY PLEASE HELP ME!!!!

Answers

Answer:

So the perimeter of the larger rectangle = 160

Step-by-step explanation:

We are given the scale factor of the two rectangles. We are given the perimeter of the smaller rectangle = 120.

Since the two rectangles are scaled, this means they have a common ratio. In other words:

[tex] \frac{perimeter \: of \: larger \: rectangle}{perimeter \: of \: smaller \: rectangle} = \frac{4}{3} [/tex]

As given in the question.

Now we know the smaller rectangle has a perimeter of 120.

Let's take the perimeter of the larger rectangles as x.

[tex] \frac{x}{120} = \frac{4}{3} \\ \\ multiplying \: both \: sides \: by \: 120 \\ x = \frac{4}{3} (120) \\ x = 160[/tex]

So the perimeter of the larger rectangle = 160

If a car travels 7.5 miles in ¼ hour, how many miles will it go in 1 hour?

Answers

30 miles
Since its 1/4 hour that pass you multiply 7.5 with 4

Help mee !! I’ll give points !!

Answers

Answer: It is (x - 3)(x + 5)

HELP NOW PLSSSSSSSSSSSS

Answers

Answer:

DIBF

Step-by-step explanation:

The lines are:

Line 1  = DLine 2 = ILine 3 = BLine 4 = F

The code is:

DIBF
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