2 years ago

Solve the system of equations. 12x-5y=-20 y=x+4

Mathematics

1 answer:

Gwar [14]2 years ago

5 0

Answer:

x = 0, y = 4

Step-by-step explanation:

12x - 5y = 20

y = x+4

____________

12x - 5y = 20

-x + y = 4

___________

12x - 5y = 20

5(-x+y = 4)

___________

12x - 5y = 20

-5x + 5y = 20

____________

7x = 0

x = 0

y = x + 4

y = 0+4

y = 4

You might be interested in

The science teacher has a 1. 200 scale model of the space shuttle

bezimeni [28]

I have no clue actually this is weird

5 0

2 years ago

It took Mike 1/3 hour to mow 1/4 of a yard. How long will it take him to finish the entire yard?

Kazeer [188]

Answer:

4/3 of an hour, or 1.33 hours

Step-by-step explanation:

It took Mike 1/3 of an hour to mow 1/4 of the yard. This means when it has been 1 full hour, he would have mowed 3/4 of the yard, because $\frac{1}{3} *3=1$ hour. Because of this, we can multiply 1/3 by 4, because he has to mow 4 parts of his lawn, and he can do 1 part in 1/3 of an hour.