Answer: 95/144
Explanation:
There are 12 light bulbs.
There are 5 defective bulbs.
There are 7 not defective bulbs.
P (at least one defective) = first one defective or second one defective or both defective.
P (at least one defective) = (5/12)(7/12) + (7/12)(5/12) + (5/12)(5/12) = 95/144
Answer:
I am so confused I don't know how to answer this.
Answer:
you're answer is negative 15
Answer:
21
Step-by-step explanation: hoped I helped
LK is actually the opposite side. What you've also been given is the length of the hypotenuse and an angle (20 degrees).
We know that:
sin(β)=Opposite/Hypotenuse=O/H
This is because of the famous:
SOH CAH TOA
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We can solve the problem by writing down:
sin(20)=LK/8.5
This means that:
LK = 8.5 * sin(20)
LK = 2.91 metres (to 2 decimal places)