When 430 randomly selected lightbulbs were tested in a laboratory 224 lasted more than 500 hours. Find a point estimate of the proportion of all lightbulbs that last more than 500 hours

439400

step-by-step explanation:

130^2 = 16900

16900*26 = 439400

1st part is 64,000,000

2nd part 500,000

step-by-step explanation:

option a is correct.

only one solution to the system of equations

step-by-step explanation:

if the graph of the equations do not intersects(i.,e if they are parallel) then, there are no solutions that are true for both the equations.

if the graph of the equations intersects, then there is one solution and that is true for both the equations.

since, in the given figure:

the two lines intersect each other

⇒there is only one solution which satisfy both the lines of an equations.

therefore, there is only one solution to the system of equation