Solve the system using the elimination method. - Which one should I do first
3x-4y+z=-5
6x-4y+z=1
x+y+z=6

Answers

Answer 1

Answer:

first equation and second equation

Step-by-step explanation:

it is more easier because both of them have the same y

Answer 2

Answer:

Use equation (1) and equation(2) and eliminate 4y+z

Step-by-step explanation:

3x-4y+z=-5     ...(1)

6x-4y+z=1        ...(2)

x+y+z=6          ...(3)

First, you find the equation that you can use the elimination method on;

there are multiples of them.

However, I would use equation (1) and equation(2) and eliminate 4y+z :

 3x-4y+z=-5

- 6x-4y+z=1  

         -3x=-6

            x=2

As you can see, both the terms with y and z are eliminated in one step, exposing the variable x.

From here is just my advice:

There are multiple ways for you to answer this question. In math, the process may sometimes not matter if the answer was correct. Nevertheless, you should try finding one way that fits you or makes it easier to solve. I personally think that how I have been trying this helped me later when math got more complicated. (Also, it was fun for me to find another way that I was not taught of)

GOOD LUCK!! and I HOPE THIS HELPS YOU!!!!


Related Questions

Select the step in the solution that FIRST shows an error.
Step 1: 4x – 10 = 10
Step 2: 4x = 20
Step 3: 4x = 5
Step 4: X = 1.25
Step 1
Step 2
Step 3
Step 4

Answers

Answer:Step 3

Step-by-step explanation:

2. How many solutions does the system have?
y - 4x = -3
2y - 8x = 10
a. one solution
b. two solutions
c. infinitely many solutions
d. no solution

Answers

Answer:

no solution both

Step-by-step explanation:

Infinite solutions because any number can substitute x

A survey was conducted to see how many people ride a bus to school everyday. 160 people reported that they ride the bus to school everyday. This number represents 80% of the people surveyed how many people were surveyed.

Answers

Answer:

200

Step-by-step explanation:

160/x=80/100 find x by cross multiplying meaning 80x=16000

16000/80=x

Helppppp me plzzzzzzzzzzz somebody

Answers

Answer:

(2,0)

Step-by-step explanation:

On the x-axis, the point is at 2. The point has a y-value of 0, as it's on the x-axis.

The answer above is correct my dude

Select the transformations of g(x) = |- 2x + 6| in relation to the parent function.
A) Translated right 3 units
B) Translated left 3 units
C) Reflected over y-axis
D) Reflected over x-axis
E) Vertical Stretch
F) Horizontal Compression

Answers

B) Reflection over the y-axis
F) Horizontal compression

The transformations of g(x) = |- 2x + 6| in relation to the parent function will be Translated right 3 units and Vertical Stretch. Then the correct option is A and E.

What is a function?

A function is an assertion, concept, or principle that establishes an association between two variables. Functions may be found throughout mathematics and are essential for the development of significant links.

The absolute function is given as,

y = |-2x + 6|

Simplify the equation, then we have

y = |-2x + 6|

y = 2|x - 3|

The transformations of g(x) = |- 2x + 6| in relation to the parent function will be Translated right 3 units and Vertical Stretch. Then the correct option is A and E.

More about the function link is given below.

https://brainly.com/question/5245372

#SPJ2

What are the equations of the asymptotes of the hyperbola?


[tex]\frac{(y+4)^{2} }{36}[/tex] - [tex]\frac{(x-6)^{2} }{49}[/tex] =1


Enter your answer in point-slope form by filling in the boxes. Enter the slope as a simplified fraction.

Answers

Answer:

hyperbola?

[tex]\frac{(y+4)^{2} }{36}[/tex] - [tex]\frac{(x-6)^{2} }{49}[/tex] =1

Enter your answer in point-slope form by filling in the boxes. Enter the slope as a simplified fraction.

Can someone please find out what x is?

Answers

The answer would be x=2

Answer: x = 2

Simplify and Distribute

(−5)(4x)+(−5)(−2)=(−2)(3)+(−2)(6x)

−20x+10=−6+−12x

−20x+10=−12x−6

Adding 12x both sides.

−20x+10+12x=−12x−6+12x

−8x+10=−6

Subtract 10 both sides

−8x+10−10=−6−10

-8x = -16

Then divide both sides by 8

-8x/8 = -16/8

x=2

NEED HELP NEED HELP please if you know show me how you got the answer

Answers

Answer:

It says to Graph y = 1/2x - 4

So equation y = 1/2x - 4

this corresponds to slope intercept form which is y = mx + b

M = slope = rise / run

B =  y - intercept

First, start at the origin, (0,0)

Then go down 4, you should now be on the coordinate (0,4)

Now we need to use the slope.

The slope is 1 / 2, this means rise 1, run 2 (in this case 2 to the right because it is positive)

So, start at (0 , 4) and go up 1 unit then 2 to the right, then place a dot, keep repeating until you meet the end of the paper.

Then do the opposite so that you can graph the other side.

Down 1 and 2 to the left.

Answer:

Graph Points (0.-4) and (8,0) and connect the dots into a line

Step-by-step explanation:

To graph y=1/2x-4 you will need to find the y and x-intercept. To find an intercept you have to substitute the x and y variables with 0 one at a time. I first substitute the x variable with an 0 and got the equation y=-4 so my y-intercept is (0.-4). Then I substituted the y variable with 0 and got 0=1/2x-4, I added 4 on each side to get rid of it and got 4=1/2x. I then multiplied both sides by 2 to get the x by itself and got 8=x so my x-intercept is (8,0). Whenever your graphing slope-intercept form equations just find the y and x-intercepts, graph them, connect the dots.

Hope this helps you

Apples cost $1.47 per pound. Danielle buys an apple that weighs 0.62 pound. To the nearest cent, how much does Danielle’s apple cost?

Answers

Answer:

91 cents

Step-by-step explanation: Just a hunch

The amount that Danielle’s apple cost is $0.91.

Using this formula

Cost=Sales price per pound× Weight per pound

Where:

Sales price per pound=$1.47

Weight in pound=0.62 pound

Let plug in the formula

Cost=$1.47×0.62

Cost=$0.91

Inconclusion the amount that Danielle’s apple cost is $0.91.

Learn more here:

https://brainly.com/question/22214116

Triangle LMN with vertices L(0, 3), M(3, 4), and N(1, 2): a) 180° rotation about the origin b) dilation with scale factor of 2 using the origin as the center

Answers

Answer:

[tex]L" = (-6,0)[/tex]   [tex]M" = (-8,-6)[/tex]   [tex]N" = (-4,-2)[/tex]

Step-by-step explanation:

Given

[tex]L = (0,3)[/tex]

[tex]M = (3,4)[/tex]

[tex]N = (1,2)[/tex]

Required

Determine the new coordinates of L, M and N

Applying (a): 180 degrees rotation about the origin

When [tex](x,y)[/tex] is rotated about 180 degrees, the new point becomes [tex](-y,-x)[/tex]

So:

[tex]L = (0,3)[/tex] ==> [tex]L' = (-3,0)[/tex]

[tex]M = (3,4)[/tex] ==> [tex]M' = (-4,-3)[/tex]

[tex]N = (1,2)[/tex] ==> [tex]N' = (-2,-1)[/tex]

Applying (b): Dilation of scale factor, 2

The formula to apply here is;

[tex]New = Old * Scale\ Factor[/tex]

So:

[tex]L' = (-3,0)[/tex] becomes:

[tex]L" = L' * 2[/tex]

[tex]L" = (-3,0) * 2[/tex]

[tex]L" = (-6,0)[/tex]

[tex]M' = (-4,-3)[/tex] becomes:

[tex]M" = M' * 2[/tex]

[tex]M" = (-4,-3) * 2[/tex]

[tex]M" = (-8,-6)[/tex]

[tex]N' = (-2,-1)[/tex]

[tex]N" = N' * 2[/tex]

[tex]N" = (-2,-1) * 2[/tex]

[tex]N" = (-4,-2)[/tex]

Hence;

The new coordinates are:

[tex]L" = (-6,0)[/tex]

[tex]M" = (-8,-6)[/tex]

[tex]N" = (-4,-2)[/tex]

PLEASE PLEASE HELP ME ! Jerry wants to buy his grandpa's old car for $500.00. He works 10 hours a week
at $7.50 an hour. How many weeks will he need to work before he earns enough
money to buy the car? Write and equation

Answers

Answer:

Step-by-step explanation:

Needs $500  Makes 7.50 and works 10 hours week.

7.50*10= $75.00 a week

500/75= 6.6 weeks or 6 weeks and 2/3 of a week. I'd round to 7 weeks.

75(x)=500   X= weeks needed.

75x=500 if you divide 500 by 75

x=20/3 or 6.6

Question 11 (1 point)
(03.03 LC)
Look at triangle ABC.
y
A (4,5)
4 3
2

C (4.2)
1
5 -4 -3 -2 -1 0
1 2 3 4 5
-1
-2.
-3
-5
What is the length of side AB of the triangle? (1 point),
a
Oь 3 3
6

Answers

Answer:

3

3 ok im

Step-by-step explanation:

Jackson kitten weighed 2 pounds 3 ounces a month later the kitten weighed 56 ounces. How munch weight did the kitten gain in that month. How many ounces did the kitten gain

Answers

Answer: 21 ounces

Step-by-step explanation:

From the question, we are told that Jackson kitten weighed 2 pounds 3 ounces a month. We should note that 16 ounces = 1 pound.

Therefore we'll convert 2 pounds, 3 ounces to ounces. This will be:

= (2 × 16 ounces) + 3 ounces

= 32 ounces + 3 ounces

= 35 ounces

We are further told that later the kitten weighed 56 ounces.

The amount of weight gained by the kitten in that month will be:

= 56 ounces - 35 ounces

= 21 ounces

The fraction 3/8 is closest to which benchmark?


zero
one-half
seven-eights
one

Answers

Answer:

I would say one-half

Step-by-step explanation:

because its 3/8 and is close to 4/8 which is equal to 1/2

Answer:

1/2

Step-by-step explanation:

1/2 × 4 = 4/8 jdvegeje shhe

The Corner Market will sell 3 papayas for $3.75.

The unit rate is

The slope of the line that best represents the cost of papayas is

The unit rate and the slope of the line represent the

Answers

Answer:

The cost of papayas each is 1.25

Step-by-step explanation:

Hope this helped

the sum of two numbers is 52 the larger number is 4 more than 2 times the smaller number find both numbers let x be the smaller number

Answers

Answer:

Smallno. =16

Bug no. =36

Step-by-step explanation:

Y=big number

X=small number

X+Y=52

Y=2X+4

Substitute

X+2X+4=52

3X=48

X=16(small no.)

Y=36(large no.)

Checking:

36+16=52(yay correct)

36=(2*16)+4 (coorrectoo!)

Hope this helps!

Can Anybody Help With Geometry Work?

Answers

the answer would be AAG

WILL GIVE BRAINLIEST!!!!! Use the system of equations to answer the questions. 2x + 3y = 3 y = 8 – 3x The value of y from the second equation is substituted back into the first equation. What is the resulting equation? What is the value of x? What is the value of y?

Answers

Answer:

x=3 y=-1

Step-by-step explanation:

2x+3y=3;y=8−3x

Rewrite

y=−3x+8 2x+3y=3

Step: Solvey=−3x+8 for y:

y=−3x+8

Step: Substitute−3x+8foryin2x+3y=3:

2x+3y=3

2x+3(−3x+8)=3

−7x+24=3(Simplify both sides of the equation)

−7x+24+−24=3+−24(Add -24 to both sides)

−7x=−21

−7  - 7

x=3 (Divide both sides by -7)

x=3

Step: Substitute3forxiny=−3x+8:

y=−3x+8

y=(−3)(3)+8

y=−1(Simplify both sides of the equation)

this might be confusing but you gotta study :)

Can someone help me please

Answers

Answer:

x = 69

Step-by-step explanation:

x+x+(x-27) = 180

3x = 207

x = 69

please help :) im stupid and bad at this lol
(i meant to put english not math)

name the four types of transition words and what type of relationship each shows.​

Answers

Answer:

Addition. “Also, I have to stop at the store on the way home.” ...

Comparison. “In the same way, the author foreshadows a conflict between two minor characters.” ...

Concession. “Granted, you did not ask ahead of time.” ...

Step-by-step explanation:

Find the measure of side b. (Round the answer to the nearest whole number)

Answers

Answer:

119 inches

Step-by-step explanation:

cos 42° = [tex]\frac{b}{160}[/tex]

b = 160 × cos 42° ≈ 119 in.

Bart wants to rent a car. The fee is $25 plus $0.55 per mile. He has budgeted $212 for the car. Write an
inequality to show how much he can spend for the car.

Answers

Answer:

25 + 0.55x ≤ 212

Step-by-step explanation:

Bart can only spend 212, hence the less than or equal to symbol. The cost of using the car must be at most 212, so 25 and 0.55x are on the same side. 0.55x represents the cost of driving an unknown amount of miles.

can you please help meee ,due at 11!

Answers

Answer:

x-intercept: -1/2

y-intercept: 5/2

Step-by-step explanation:

Please help with this question; I need to prove to my parents I am not as much of a disappointment to them as they think I am.

Answers

Answer:

ΔABD ≅ ΔCBD by SAS Congruence Postulate (Option C)

Step-by-step explanation:

In ΔABD & ΔCBD ,

1) AD = CD = 15 units

2) ∠ADB = ∠CDB (∵ BD is angle bisector)

3) BD = BD (common side)

∴ ΔABD ≅ ΔCBD by SAS congruence postulate.

Answer:

Triangles ABD and CBD are congruent by SAS.

Step-by-step explanation:

Sides AD and CD are congruent since they both measure 15.

Angles ADB and CDB are congruent because of the angle bisector.

Side DB is congruent to itself.

By SAS, triangles ABD and CBD are congruent.

Answer: Triangles ABD and CBD are congruent by SAS.

Write the equation of the line that is parallel to the line y= 3x+ 6 and passes through the point (4, 7).

Answers

Answer:

Is this slope?

Step-by-step explanation:

Answer:

y = 3x - 5

Step-by-step explanation:

Let the equation be y = mx + c

Since the equation is parallel to y = 3x + 6, gradients of the two eqns are the same

therefore, m = 3

sub (4, 7):

7 = 3(4) + c

c = -5

therefore, equation of the line is y = 3x - 5

If you are doing a gift exchange, and everyone has to spend at least 10 dollars but less than 20 dollars, what inequality represents the situation

Answers

Answer:

10≥x<20

Step-by-step explanation:

Machine B covers 2/3 square feet in 1/5 hours

Answers

Answer:

He covers 10/3 or 3 1/3 square feet in 1 hour

Step-by-step explanation:

Seance he covers 2/3 feet in 1/5 hours 2*5 will give you 10 so you have 10/3

My last question!!!! But what does it mean? Please help!

Answers

Answer:

The First Option is Correct.

Step-by-step explanation:

[tex]d \geq 99[/tex]

Use the distributive property to expand the following expression.
-2(2.1x+3y-1.8)
WILL MARK BRAINLYEST

Answers

-4.2-6y+3.6
Sorry for my writing

describe a real-world situation that models the multiplication expression 20(-1).

Answers

Basically you can write taking from something or using something 20 times. Here are three examples.

You borrowed 1 dollar from someone 20 times. You descend 1 meter at a time (like a submarine).There are 20 candies in the jar. Each day you eat 1 candy.
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