Answer:
hello :
2/7y(k-7) = 2/ (7yk-49y)
the expression is equivalent to 2/7y(k-7) is : 2/ (7yk-49y)
valus of k does not equal 0 is : k=7
Answer:
1 time unit
Step-by-step explanation:
There is a 1 in 3 chance that the time until the bulb burns out is zero, and a 2 in 3 chance that the time is the average between 0 and 3 (since it is uniformly distributed). Therefore, the expected value for the time until it burns is:

The expected value of the time until the lightbulb burns out is 1 time unit.
Answer:
<h2>[a]=x²_6x</h2><h2>[b]=4x²+x</h2><h2>[c]=10x²+8x</h2><h2>[d]15x²_3xy</h2>
Step-by-step explanation:
3/30=9/v
3×3=9
30×3= 90
v=90