2 years ago

Solve using elimination x-2y=10 and x+3y=5

1 answer:

6 0

Multiply the equation (x-2y=10) by -1
-x+2y=-10
x+3y=5
The x’s cancel out
2y=-10
3y=5
Combine
5y=-5
Divide both sides by 5
y=-1
Plug in y to either original equation
x-2(-1)=10
x+2=10
Subtract 2 from both sides
x=8, y=-1

You might be interested in

Given the equation 1/4y+3/4=8, what number

const2013 [10]

Answer:

#fddddffdddfloodsuuf

3 0

3 years ago

Combine like terms to create an equivalent expression

klasskru [66]

Answer:

1/6a-1/6

Step-by-step explanation:

-2/3 transferred into 6th's is -4/6. You combine like terms, -4/6a+5/6a=1/6a

Then since -1/6 doesn't have a like term, it stays the same.

7 0

3 years ago

What is the value of x?<br><br> Enter your answer in the box.

Fed [463]

All you have to do is add those two numbers given and subtract by 180. all of the angles shall add up to 180 if not then you dic something wrong

5 0

3 years ago

A tin is a right circular cylinder with a diameter of 6 meters and a height of 10 meters. What is the surface area of this tin,

Alex777 [14]

Answer:

245.04

Step-by-step explanation:

A=2πrh+2πr2=2·π·3·10+2·π·32≈245.04423

Divide 6 by 2 to find the radius

5 0

3 years ago

F. one die is rolled 3 times. what is the chance of getting no 2's?

aniked [119]

6^3 = 216. When using chance, take the number of outcomes(six for a die) and raise it to the power of the number of repetitions

6 0

3 years ago