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emmainna [20.7K]

3 years ago

15

Every day, Jackie practices basketball and guitar. Each day, she practices basketball for 1.5 hours. If after 6 days she practic

ed both basketball and guitar for a total of 21 hours, how many hours per day did Jackie practice guitar?

1 answer:

ad-work [718]3 years ago

3 0

Answer:

12 hours

Step-by-step explanation:

1.5 hours per day

1.5×6= 9 hours 6 days

21-9= 12 hours (guitar)

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When the health department tested private wells in a county for two impurities commonly found in drinking water, it found that 2

guajiro [1.7K]

Answer:

P( Y = 0 ) = 0.2

P( Y = 1 ) = 0.7

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If 20% of wells didnt have impurities it could be said as that the probability that it didnt have A and didnt have B was 0.2:

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