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emmainna [20.7K]

2 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]2 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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kiruha [24]

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Step-by-step explanation:

Formula to find the confidence interval for population mean :-

$\overline{x}\pm z^*\dfrac{\sigma}{\sqrt{n}}$

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As per given , we have

$\overline{x}=35.15$

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$=35.15\pm (1.96)\dfrac{1.7}{6.08276}$

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Solve 3[-x + (2 x + 1)] = x - 1.<br> x = 2

Gekata [30.6K]

Answer:

x = -2

Step-by-step explanation:

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Step-by-step explanation:

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