Please do elimination method 2x-9y=-36
-14x+18y=-18

Please Do Elimination Method 2x-9y=-36 -14x+18y=-18

Answers

Answer 1

Answer:

The solution to the system of equations will be:

[tex]x=9,\:y=6[/tex]

Step-by-step explanation:

Given the system of equations

[tex]\begin{bmatrix}2x-9y=-36\\ -14x+18y=-18\end{bmatrix}[/tex]

Multiply 2x-9y=-36 by 7

[tex]14x-63y=-252[/tex]

so the system of equations becomes

[tex]\begin{bmatrix}14x-63y=-252\\ -14x+18y=-18\end{bmatrix}[/tex]

Adding both equations

[tex]-14x+18y=-18[/tex]

[tex]+[/tex]

[tex]\underline{14x-63y=-252}[/tex]

[tex]-45y=-270[/tex]

solve -45y = -270 for y

[tex]-45y=-270[/tex]

divide both sides by -45

[tex]\frac{-45y}{-45}=\frac{-270}{-45}[/tex]

Simplify

[tex]y=6[/tex]

For 14x-63y = -270 plug in y = 6

[tex]14x-63\cdot \:6=-252[/tex]

[tex]14x-378=-252[/tex]

Add 378 to both sides

[tex]14x-378+378=-252+378[/tex]

Simplify

[tex]14x=126[/tex]

Divide both sides by 14

[tex]\frac{14x}{14}=\frac{126}{14}[/tex]

Simplify

[tex]x=9[/tex]

Therefore, the solution to the system of equations will be:

[tex]x=9,\:y=6[/tex]


Related Questions

Can someone help? Don’t need any working out

Answers

volume= 301.6
curved surface area= 188.5

Valeria drove 621 miles in 11.5 hours. What was her average speed in miles per hour?

Answers

Answer:

54 miles per hour.

Step-by-step explanation:

Just divided 621 by 11.5.

You would take 621 and divide that by 11.5 and you would get 54 mph I believe, if I am wrong please let me know so I can take down my answer! have a great and God blessed day! :D

Solve the system of linear equations by graphing. y=-3x + 1 y = x- 7

Answers

Answer:

(2,-5)

Step-by-step explanation:

State the equation of the straight line with:
a - a gradient of 4 passing through the y-axis at (0,7)
b - a gradient of 5 passing through the y-axis at (0,1)
c - a gradient of 6 passing through the y-axis at (0,2)
d - a gradient of 9 passing through the y-axis at (0,13).​

Answers

Answer:

a) y = 4x + 7 (b) y = 5x + 1 (c) y = 6x + 2 (d) y = 9x + 13

What type of association would you expect between a persons age and hair length (positive/negative etc)

Answers

Answer:

:0 according to my calculations

Step-by-step explanation:

cheese

Write slope intercept of the equation with slope of 7 crossing point (0, 5)

Answers

Answer:

y=7x+5

Step-by-step explanation:

Y=7x+5 I think I’m not sure

chicken tenders or chicken nuggets

Answers

Answer:

i dont know which one to choose but chicken tenders

Answer:

Chicken tenders.

Step-by-step explanation:

Chicken nuggets are the gross consumption of organs including lungs and others mushed together and fried. In return kids run to it because (most) kids only eat gross stuff. This made the marketing campaign SKY ROCKET with kids everywhere trying to get a bite. FORCING their poor parents to get them that disgusting mush. And then dip it in ketchup. Which is NOT a fruit or veggie. (As the school system thinks they are a veggie.)

While chicken tenders are chopped off the chicken meat then rolled in bread crumbs. And then deep fried to make a crispy exterior with a delicious tender interior.  Without getting mushed together with other things.

Also you never know what they put in that chicken nugget since its mushed together ‍♀️.

(-2, 4) and (3, -1)
Write equation in slope intercept form

Answers

Answer: y=-x+2

Step-by-step explanation:

m=(-1-4)/(3+2)=-5/5=-1

y=-x+b

Plug in the values

y=-x+2

Answer:

y =  − x + 2

Step-by-step explanation:

Subtract -7x + 6 from -2x^2 + 9x - 2

Answers

Answer:

[tex]( - 2 {x}^{2} + 9x - 2) - ( - 7x + 6) \\ = - 2 {x}^{2} + (9 + 7)x + ( - 2 - 6) \\ = - 2 {x}^{2} + 16x - 8[/tex]

Gilbert is -17 meters under sea level every second(s) he gains 0.5 meters after how many seconds is he at sea level?

Answers

Answer:

He is at sea level after 34 seconds

Step-by-step explanation:

The height at sea level is given as 0 meters

So the change in height would be;

0- (-17) = 17 meters

There is a gain of 0.5 meters in 1 second

So, the time taken for it to gain 17 meters will be 17/0.5 = 34 seconds

HELP PLEASE WILL GIVE BRAINLIEST!!!

Answers

Answer: 52 units

a^2+b^2=c^2

4^2+6^2=c^2

16+36=c^2

52units

How many solutions does 6 -3x = 12 - 6x have?
A. Two solutions
B. No solutions
C. Infinitely many solutions
D. One solution

Answers

Answer:

D. One solution

Step-by-step explanation:

Simplify:

[tex]6-3x = 12-6x\\-3x+6x = 12-6\\3x = 6\\x = 2[/tex]

There is only one solution (x=2) that satisfy the equation.

Please answer please ASAP * please don’t answer if you don’t know please .

Answers

Answer:

x = 26

Step-by-step explanation:

1. Information

One can partition this figure into three different parts, two congruent triangles, and one rectangle. To find the value of x, one has to find the base of the two triangles, and then the base of the rectangle. Since opposite sides are congruent, the base of the rectangles is 10. To find the base of the triangle, one has to use the Pythagorean theorem.

2. Base of the rectangle

Again, opposite sides are congruent, hence the base of the rectangle is equivalent to the top part. Hence the base is 10.

3. Base of the triangle

Use the Pythagorean theorem;

[tex]a^{2}+b^{2} = c^{2}\\a-leg\\b-leg\\c-hypotenuse[/tex]

Substitute in the given value and solve

[tex]a^{2}+15^{2} = 17^{2}\\a^{2} + 225 = 289\\a^{2} = 64\\a = 8[/tex]

4. Finding x

There are two congruent trinagles, hence one has to add the base of the triangle twice. The equation will be

x = base_of_triangle + base_of_rectagle + base_of_triangle

x = 8 + 10 + 8

x = 26

Put these in descending order 0.68,0.9,0.81 and 0.86

Answers

Answer:

0.9 , 0.86, 0.81, 0.68

Step-by-step explanation:

i don't know if this has an explanation, you should just order them

0.9, 0.86, 0.81, 0.68


you just order them normally.
don’t be fooled by the fact that 0.9 doesn’t have another number- it means 0.90


I need help pleasee

Answers

Answer:

c is the answer

explination:

4*3 1/2=28/2

28/2 divided by 6 is equal to 7/3 or 2 1/3

PLS HELP ME ON THIS ASAP!!!!​

Answers

Answer:

a = upward

vertex = -2,4

Step-by-step explanation:

i will answer the rest under comments

Help, I don’t know how to do this.

Answers

Answer:

2

Step-by-step explanation:

OK 13-5=8 and that leaves 8k so k must be 2 because since their is no space they are being multiplied together and 8x2=16 :) hope this helps

plz give thanks

5 rate?? my brother doesn't want to helpx me someone help?]'

Answers

Answer:

-5/2 is the reciprocal of -2/5, but the opposite would just be 5/2.

Step-by-step explanation:

Answer:

yes the answer is yes i think im not good at explaing but hope that helps

Step-by-step explanation:

Rectangular tiles, which measures 8 by 6 ,are arranged without overlaping ,to create a square ,The minimum number of these tiles needed to make a square is

Answers

Answer:

24

Step-by-step explanation:

To obtain the minimum number fi tiles needed;

We find the Lowest common multiple of 8 and 6

Multiples of :

6 = 6, 12, 18, 24, 30, 36, 42, 48,...

8 = 8, 16, 24, 32, 40, 48, 56,...

Hence, the lowest common multiple of 8 and 6 is 24

Answer:

its B

Step-by-step explanation:

yo somebody help me on this i will mark you has brainlist c: plz

Answers

It should be 10.42 meters

You add the two numbers to get how much space is in between the two

6c – 7 + d + 4 – 6d combine like terms

Answers

Answer:

6c-5d-3

Step-by-step explanation:

6c-7+d+4-6d=6c-5d-3

write 2x + y= 9 in the form of y=mx + b​

Answers

Step-by-step explanation:

2x+y=9 ( y=mx+b)

y=-2x+9

sorry...if its wrong

50 POINTS PLEASE HELP ASAP IF CORRECT WILL GIVE BRAINLYIST

Answers

Answer:

1: (5,-2) 16

2: (-2,2) √3

3: (-14,21) 2

4: (-7,10) √8

5: (2/3,17) √5

Step-by-step explanation:

Sheleah and her family are planning a trip from Los Angeles, California to Melbourne, Australia. While booking her family's plane tickets, she notices on the itinerary that the airline is offering a sixteen hour straight flight from Los Angeles to Melbourne on a Boeing 747-8 Intercontinental Jet. In an effort to learn more about the capabilities of the Jet, Sheleah does a little research and stumbles upon the following graph and facts about the Jet's gasoline consumption.

GRAPH IN SCREENSHOT

The Boeing 747-8 Intercontinental Jet can carry approximately 422,000 gallons of gasoline, making it possible for the jet to travel 14,430 kilometers before needing to refuel.

Using the graph, approximate the Jet's average gas consumption, in gallons per hour, during the sixteen hour flight from Los Angeles, California to Melbourne, Australia. In your final answer, include all of your calculations.

Answers

26375

On the graph, it tells you how much fuel is left after 2 hours of the journey.

If we take 422,000 and subtract 369,250 from it we get 52,750. However, this is how much gas is used in 2 hours, so to find one hour we need to divide by 2, getting us 26,375.

Therefore, the Jet uses 26,375 gallons per hour during the 16 hour trip from Los Angeles, CA to Melbourne, Australia.

27 minus 9X +15 Y please

Answers

27 - 9x +15y

Factor out common  term 3 :

3(9-3x+5y)

hope this helps!

Answer:

3(9-3x+5y)

Step-by-step explanation:

help giving brainliest

Answers

Answer:

First you have to plot Bart's Garage's fee. Bart's equation is y = 30x + 20, so you would need to plot the points (0, 20) and (1, 50).

Lisa's base fee is the same, so her equation would have a + 20 at the end of it, but her hourly fee is higher. Therefore her hourly fee would be higher than 30. Her equation could be anything above 30, y = 50x +20 would work. The points for that graph are (0, 20) and (1, 70).

If Mark wants to pay off a loan in 5 years and the bank charges 10 percent interest, how much would Mark pay for the entire loan?​

Answers

Assuming the loan is 100 dollars
100 x .10 = 10
100 + 10 = 110

So he would pay 110 dollars

If the loan is 4560
4560 x .10 = 456
4560 + 456 = 5016

PLS HELP I HAVE TO TURN THIS IN IN FIVE MIIN!!
Tickets to a play cost $4 in advance and $5 at the door. The theater club president wants to raise at least $400 from the ticket sales. If the club sells 40 tickets in advance, what is the least number of tickets the club needs to sell at the door to reach the president’s goal?

Answers

Answer:48

Step-by-step explanation:

Answer:

48 tickets

Step-by-step explanation:

so multiply the 4 and 40 to get 160, then subtract that from 400. divide by the 5 and then u get 48

(SHOW STEPS)
2(x-5) + 10

Answers

Answer:

2(x-5)+10

2x-10+10

2x is the answer

Step-by-step explanation:

Your middle school has 900 students. 1/3 of students bring their lunch instead of buying lunch at school. How many students do and do not bring their lunch?

Answers

Answer:

2/3

Step-by-step explanation:

If 1/3 of students bring their lunch to school then 2/3 of students dont

Answer:

300 brought lunch

600 did not bring lunch

Step-by-step explanation:

1/3 of 900 = 300

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