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madreJ [45]
3 years ago
5

Carson drives to school the same way each day, and there are two independent traffic lights on his trip to school. he knows that

there is a 30% chance that he will have to stop at the first light and an 80% chance that he will have to stop at the second light. what is the probability that he will not have to stop at either light?
Mathematics
2 answers:
vodka [1.7K]3 years ago
8 0
0.3x0.8=0.24 so 24% chance he wont have to stop i think
Vinil7 [7]3 years ago
4 0

Answer:

14% is the probability he wont have to stop at either light

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The answer is 7.5
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Factor (z-5)(z+4)=52​
Ipatiy [6.2K]

Good Afternoon! Here is your answer step by step!

Let's solve your equation step-by-step.

(z−5)(z+4)=52

Step 1: Simplify both sides of the equation.

z2−z−20=52

Step 2: Subtract 52 from both sides.

z2−z−20−52=52−52

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Step 3: Factor left side of equation.

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Step 4: Set factors equal to 0.

z+8=0 or z−9=0

z=−8 or z=9

Answer:

z=−8 or z=9

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