Answer:I believe it is D I’m taking the same test to
Step-by-step explanation:
Root of 49
Solutions are 7 and -7
We know that 7 is the square root of 49.
A negative number multiplied by itself gives positive
So -7 is also a square root of 49
P(picking one defective) = 3/10
P(picking a 2nd defective) = 2/9
P(1 and 2 defective) = 3/10 x 2/9 = 6/90 = 0.066
Second method using combination:
³C₂ / ¹⁰C₂ = 1/15 = 0.066
Answer:
2
Step-by-step explanation:
77.50 - 63.50 = 14
per gigabyte $5 + 5 =10
so answer is 2