3 years ago

!Plsss help mee!! I will give u BRAINLYEST!!

Mathematics

1 answer:

Vanyuwa [196]3 years ago

4 0

Answer:

r≈5

the answer is b

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At Tech High there are three math teachers, Mary, Tom, and Alex. All students at Tech High take math, with 21% taking class with

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The probability that a Tech High student fails math is 0.1006

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21% students are taking class with Mary.

Every year 4% of Mary’s students fail,

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Now we are supposed to find the probability that a Tech High student fails math.

$P(\text{Tech High student fails math}) = P(\text{taking class with Mary})\times P(\text{Mary students fail})+P(\text{taking class with Tom}) \times P(\text{Tom students fail})+P(\text{taking class with Alex}) \times P(\text{Alex student fail})$

$P(\text{Tech High student fails math}) = 0.21 \times 0.04+0.15 \times 0.06+0.64 \times 0.13$

$P(\text{Tech High student fails math}) =0.1006$

Hence the probability that a Tech High student fails math is 0.1006

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4 years ago

How do you solve 2x+1=-3

Ipatiy [6.2K]

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