-4x+y=3 and 2x-y=12. which of the options represents the resulting equation after an equivalent expression for yw is substituted into the second equation. Odessyware!

Answers

Answer 1

Answer:

2x - (3 + 4x) = 12

x = -7.5

y = -27

Step-by-step explanation:

-4x + y = 3 (1)

2x - y = 12 (2)

From (1)

y = 3 + 4x

Substitute y = 3 + 4x into (2)

2x - y = 12 (2)

2x - (3 + 4x) = 12

2x - 3 - 4x = 12

2x - 4x = 12 + 3

-2x = 15

x = 15/-2

x = -7.5

Substitute x = -7.5 into (2)

2x - y = 12 (2)

2(-7.5) - y = 12

-15 - y = 12

-y = 12 + 15

- y = 27

y = -27


Related Questions

Parallelogram JKLM is shown.

Parallelogram JKLM is divided into 4 triangles by K M and J L which intersect at point R. Angle L M K is 72 degrees, angle K J L is 56 degrees, and angle J M K is 27 degrees.

If KR = x + 7, KM = 3x − 5, and JL = 4x − 10, what are the values of x and JR?

Answers

The measure of  x and JR are 19 and 33  respectively

From the given parallelogram,

KM = 2KR

Given the following

KM = 3x - 5KR = x  + 7

Hence;

3x - 5  = 2(x+7)

3x - 5 = 2x + 14

3x - 2x = 14 + 5

x = 19

Similarly, JL = 2JR

JR = JL/2

JR = 4x-10/2

JR = 4(19)-10/2

JR = 66/2

JR = 33

Hence the measure of  x and JR are 19 and 33  respectively

Learn more on parallelograms here: https://brainly.com/question/1834702

Answer: 19 and 33

Step-by-step explanation: best of luck to all - Logan Hunter

Find the circumference of a circle with a radius of 5 cm. Round your
answer to the nearest tenth.

Answers

31.4
Hope that helps you!

Look at the coordinate plane below.
Write down coordinates of the points.
PLS HELP! WILL DO BRAINLIST!!!!!!!

Answers

Answer:

A  -4,1   B: 7,3   I: 3,4  K: -3,-6 M: 6,0  N: 3,3  O: -5,5  P: -4,-4  R: -6,-4  T: -7,2

Step-by-step explanation:

look at the graph

Answer:

A (-4,1) B (7,3)  I (3,4) K (-3,-6) M (6,0) N (3,3) O (-5,5) P (-4,-4) R (-6,-4) T (-7,2)

Step-by-step explanation:

WILL GIVE BRAINLIEST:
If you roll a 6-sided die 6 times, what is the best prediction possible for the number of times you will roll a six?

Answers

Answer:

you roll a 6-sided die 6 times, what is the best prediction possible for the number of times you will roll a five? 5. 1. 2. 6. Submit. Submit. Continue. Correct!

Step-by-step explanation:

Answer:

There is a 1/36 chance that you will roll a 6.

Step-by-step explanation:

This would be the same for any other number in the dice if it rolled 6 times.

Hope this helps.

Match the equations to the lines

Equations

Y= 2x-1
Y= -1/2x+1
Y= -1/2x-1
Y= 1/2x-1
Y= -2x-1
Y= 1/2x+1

Answers

Answer:

A is -2x-1

B is 2x-1

C is -1/2x+1

D is -1/2x-1

E is 1/2x+1

F is 1/2x-1

Abbey's class is made up of 21 students--11 girls and 10 boys. What is the ratio of girls to boys?
A. 10 : 11
B. 11 : 10
C. 11 : 21
D. 21 : 11

Answers

Answer:

B is the number one answer

b for number 1 and i’ll figure out the rest

Plz help me I need in today

Answers

Answer:

Part b.

Step-by-step explanation:

Ok, so I think what you can do for part b. is pretty simple. You know that $820 is for 4 weeks of work. 820/4 = 205. So he gets $205 per week. If 820 = 100%, then 205*3 = 75%. So the answer would be he will recieve 75% of his usual pay, and that will be $615.

-3x= -36 and work plzz

Answers

Answer:

x=12

Step-by-step explanation:

divide 36 by 3. since their both negative, the answer would be positive

Graph (–4, 5), (2, 3), (–3, 0), (–4, –5), (–5, 2), and
(–5, 3) and connect the points to form a polygon.

How many sides does the polygon have?

The polygon has
sides.

Answers

Answer:

my bad im so sorry

Step-by-step explanation:

Answer:

The polygon has 6 sides

Step-by-step explanation:

6 x 16 = 6 x ( _ + 6 )

= (6 x _ ) + ( 6 x _ )

= _ + _

= _ square units

(hope u understand) ( this "_" means it needs to be answered)

Answers

Answer:

10

10,6

60 + 36

96 square unnits

Step-by-step explanation:

Write(-∞, -3) as an inequality.

Answers

Answer:

x is less than -3 so it would be the top one

Step-by-step explanation:

Answer:

x < -3

Step-by-step explanation:

it must be less than -3 but not equal so x < -3 is the correct answer.

FASTTT HURRYYYY PLEASEEEEEE
The pair of figures is similar. Find the missing side.

Answers

The answer is x=12 :)

so do I x 7 and 3 .........

Answers

Answer: B sorry if I am wrong

Step-by-step explanation:

Answer:

1 × 7 is 7, 7 ×3 is 21

Step-by-step explanation: if this isn't what you meant then tell me, and ill tell you the answer

mid-point of (-2,-4) and (4,6)?​

Answers

          (1,1)

Hope that helps :)


Write an equation in slope-intercept form for a line that passes through the point (1, 6) and
has a slope of 2

Answers

Answer:

y=2x+4

Step-by-step explanation:

If the line has a slope of two, that means it goes up 2 on the y axis for every 1 on the x axis. So, if it goes through (1,6), then you can subtract 1 from the x axis and two from the y axis to find the y intercept, (0,4).

correct answer gets brainliest

Answers

Answer:

6

Step-by-step explanation:

all you gotta do is plug 1/3 onto the equation.

if you are allowed to use a calculator then use desmos. if not then break it into parts.

54*(1/3)^2

1/3*1/3=1/9

then you get: 54*1/9

then you get 54/9 which is division

final answer is 6

The function below shows the cost of a hamburger with different numbers of toppings (t). f(t) = 1.90 + 1.40t What is the y-intercept, and what does it mean?

Answers

Answer:

[tex]1.9[/tex]

the cost of the hamburger will be [tex]\$1.9[/tex] if no toppings are added.

Step-by-step explanation:

The function is

[tex]f(t)=1.9+1.4t[/tex]

Let cost of toppings be [tex]y[/tex]

[tex]y=1.9+1.4t[/tex]

The y-intercept of a function is the value of the function when [tex]x=0[/tex]. Here number of toppings [tex]t=0[/tex].

So, the intercept of the function is [tex]1.9[/tex]

This means the cost of the hamburger will be [tex]\$1.9[/tex] if no toppings are added.

Please help me with the question please ASAP ASAP please please ASAP please please help please please ASAP please please IM BEGGING FOR Help

Answers

Answer:

Ok if you look at the figure, it is a vertical angle. This means that the angle opposite to each other is congruent.

m<1 is congruent to m<3

m<2 is congruent to m<4

m<3 is 60⁰ and is congruent to m<1. This means that m<1 is 60⁰. m<4 is 30⁰ and is congruent to m<2. This means that m<2 is 30⁰.

m<1 = 60⁰

m<2 = 30⁰

m<3 = 60⁰

m<4 = 30⁰

Hope this helps, thank you :) !!

i’m not sure but i think it would be non do the above

Add(2a + 8) + (4a + 5) pls show steps.

Answers

Answer: 6a + 13

Step by step

2a + 8 + 4a + 5

Combine like terms:

= 2a + 8 + 4a + 5

= (2a + 4a) + (8 + 5)

= 6a + 13

Can someone pls help me

Answers

Answer:

The answer is 56+7y

Step-by-step explanation:

7*8=56

7*y=7y

Please Explain!!
I need help plss

Answers

Answer:

See step by step

Step-by-step explanation:

For A. use any two factors that multiply to 100 that isn't 25 and 4.

For b Use one obtuse angle (angle over 90 degree) and two acute angles. Make sure they add up to 180.

For c Use any two values that add up to 52 since they didnt establish y as the midpoint.

For d. measure of angle 1 is 45 and measure of angle 2 is 45 degrees

I’m not for sure sorry

Find the solution to each equation.
3k = 48
k=
7p = 147
p=
9m = 216
m =
8C = 184
C=
4g = 72
g=

Answers

Answer:

k = 16

p = 21

m = 24

c = 23

g = 18

Step-by-step explanation:

All you had to do was divide the product by the number with the variable

Need help on this please help

Answers

Answer:

209.8

Step-by-step explanation:

Length 11.5

Width 4

Height 3.8

Formula: 2(wl+hl+hw)

Pls help with this. I will mark BRAINLIEST!

How can an area model help you set
up an equation for a problem situation?

Answers

Answer: In mathematics, an area model is a rectangular diagram or model used for multiplication and division problems, in which the  or the  and  define the length and width of the rectangle.

We can break one large  of the rectangle into several smaller boxes, using number bonds, to make the calculation easier. Then we add to get the area of the whole, which is the  or quotient.

Step-by-step explanation:

For example, you can find the product 23 × 37 by finding the area of a rectangle with a width of 23 and a length of 37: Of course, there is little gained if you simply multiply 23 × 37! What makes the area model useful is that area is a conserved quantity.

Solve for a. -\dfrac14a-4=\dfrac74a-3− 4 1 ​ a−4= 4 7 ​ a−3

Answers

what’s does dfrac mean

Emily went to Kroger to buy some fruit. She needs a dozen apples and some bananas. A dozen organic apples costs $11.45 and each organic banana costs 1.05 a piece. Emily went to Trader Joe's to compare prices. At Trader Joe's a dozen apples costs $13.45 and each organic banana 97 cents a piece. Write an equation for how many bananas Emily would have to buy for Kroger and Trader Joe's to be the same cost. Use 'b' as the variable. Use the format of Kroger=Trader Joe's

Answers

Answer:

1.05(b) = 0.97(b)

Step-by-step explanation:

What you know from the problem:

Krogers:

11.45(12)+1.05(b)

Trader Joe's:

13.45(12)+0.97(b)

Kroger = Trader Joe's

1.05(b) = 0.97(b)

pls answer 6 ill give brainliest :d

Answers

Answer:

D

Step-by-step explanation:

"Solution to the system" means when the two lines intersect. As seen in the graph, you can see that the two lines intersect at (3,-4). This was for Question 11

For question 12 I got G for the answer also you did not put the question 6

What does it mean to interpret/ How do I interpret?

Answers

Answer: explain the meaning of

Step-by-step explanation:

Solve for n.

(8ⁿ)³ = 8⁶

n = ?


For brainliest, explain the answer please.

Answers

Answer:

2is the value of n

8ⁿ)³ = 8⁶

n×3=6

n=6/3=2

solve for x -1/2x + 1/3 > 3/5​

Answers

Answer:

x > 8/15

Step-by-step explanation:

x -1/2x + 1/3 > 3/5​

Combine like terms

2/2x - 1/2x +1/3 > 3/5

1/2x   + 1/3 > 3/5

Subtract 1/3 from each side

1/2x + 1/3 -1/3 > 3/5 -1/3

1/2x  > 3/5 -1/3

Get a common denominator

1/2x > 9/15 - 5/15

1/2x > 4/15

Multiply each side by 2

2 * 1/2x > 4/15 * 2

x > 8/15

Answer:

It is X > 8/15
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