Answer:
672
Step-by-step explanation:
Let A represents the event that DVD has a video effect.
So,
P(A) = 1.5 %
Let B represents the event that DVD has a audio defect.
So,
P(B) = 0.8 %
A ∩ B represents that DVD has both audio and video defect.
So,
P(A∩B) = 0.4%
Part a)
A ∪ B represents that DVD has a video or audio defect.
P(A∪B) = P(A)+P(B)-P(A∩B) = 1.5 + 0.8 - 0.4 = 1.9%
Thus the probability that the DVD purchased by the customer has a video or audio defect is 1.9%.
Part b)
The complement of P(A∩B) will represent the probability that the DVD does not have video or audio defect.
So, the probability that DVD purchased by customer does not have video or audio defect is 1 - 0.4 = 0.96%
Answer:
2x-15 < or = -23
Step-by-step explanation:
Let x be the number.
Twice that number is 2x. 15 less than that is -15.
2x-15 < or = -23
Answer 8,050
Reason the absolute value of 8000 is 8000. The absolute value of negative 50 is 50. 8000+ 50= 8,050