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%
Angie made an error because she used substitution incorrectly in step 3.
<h3>System of equation </h3>
7x + y =−12
7x + 4y = −6
subtract equation(i) from (ii) to eliminate x
Therefore,
3y = 6
y = 6 / 3
y = 2
Therefore,
7x + 2 = -12
subtract 2 from both sides of the equation
7x = -12 - 2
7x = - 14
x = - 14 / 7
x = -2
(-2, 2)
Therefore, Angie use substitution incorrectly in step 3.
learn more on system of equation here: brainly.com/question/1818941
It is the last one.
A pre-image is the original before another shape is created from it, either dilated, translated, reflected, or rotated.
Every 5 minutes, you gain 4 gallons. 45/5 = 9, 9x4 equals 36, there would be 36 gallons of water in 45 minutes
Answer:
Just took the test and got the correct answers!!
Step-by-step explanation:
For the 1st and 4th question: look at the first and second image down below for the answer *\(♡°▽°♡)/*
2nd question:
x= 67.5 (for reasoning look at the third picture)
3rd question:
x= 41 (for reasoning look at the fourth picture)
5th question:
x= 39 (for reasoning look at the fifth picture)
<em>I hope this helps!! ♡\( ̄▽ ̄)/♡ Best of luck!!</em>