The point (0,0) is a solution to which of these inequalities?
a. y+4 < 3x+1
b. y-1< 3x-4
c. y+4< 3x-1
d. y-4< 3x-1

d. .

Step-by-step explanation:

To find : The point (0,0) is a solution to which of the given  inequalities.

Let's check all inequalities :

a.  

Substitute (x,y) = (0,0) , we get

, which is wrong.

So , The point (0,0) is not a solution for .

b.  

Substitute (x,y) = (0,0) , we get

Multiply (-1) on both sides , we get

 , which is wrong.

[Note : when we multiply a negative number to both sides of an inequality then the inequality sign gets reversed. ]

So , The point (0,0) is not a solution for .

c.

Substitute (x,y) = (0,0) , we get

, which is wrong.

So , The point (0,0) is not a solution for .

d.

Substitute (x,y) = (0,0) , we get

Multiply (-1) on both sides , we get

, which is correct.

[Note : when we multiply a negative number to both sides of an inequality then the inequality sign gets reversed. ]

So , The point (0,0) is a solution for .

54 km / hours

step-by-step explanation:

we need to convert seconds to hours

60 seconds = 1 minutes

60 minutes = 1hour

15 m         60 second   60 minutes

  * *         = 54000 meters/ hour

second     1 minute             1 hour

now we need to convert meters to km

1000 m = 1 km

54000 m       1 km

*   = 54 km / hours

hour               1000m