3 years ago

David rolls a fair dice 240 times. How many times would David expect to roll a three?

Mathematics

1 answer:

jolli1 [7]3 years ago

4 0

Answer:

Step-by-step explanation:

There are 6 numbers on an dice (1-6) Divide 240 by 6 and the reasonable amount of times to roll a 3 is 40 time

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AleksAgata [21]

Answer:

₹ 4000

Step-by-step explanation:

Sarah's salary =₹ 30000

one-tenth of her salary to an orphanage= 1/10*₹ 30000= ₹ 3000
one-third of her salary is spent on food= 1/3*₹ 30000= ₹ 10000
one-fourth of salary on rent and electricity =1/4*₹ 30000= ₹ 7500
one-twentieth of her salary on the telephone= 1/12*₹ 30000= ₹ 2500
donated some amount to the Prime Minister's relief fund = x
She was left with ₹ 3000.

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2 years ago

Dean has a spinner that is divided into 4 equal sections are labeled 1, 2, 3, and 4. Dean spun the spinner 60 times. He recorded

ICE Princess25 [194]

Answer:

Step-by-step explanation:

Dean recorded the results of spinning the spinner 60 times:

Number 1 spun 12 times
Number 2 spun 17 times
Number 3 spun 15 times
Number 4 spun 16 times

The <u>experimental probability</u> is the ratio of the number of times an event occurs to the total number of trials or times the activity is performed.

Find all experimental probabilities:

$P_{1}=\dfrac{12}{60}=\dfrac{1}{5}\\ \\P_{2}=\dfrac{17}{60}\\ \\P_3=\dfrac{15}{60}=\dfrac{1}{4}\\ \\P_4=\dfrac{16}{60}=\dfrac{4}{15}$

Hence, option B is correct

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Step-by-step explanation:

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