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olya-2409 [2.1K]
2 years ago
7

One week a student exercised 3 hours at school and another of an hour at home. If of the student's total exercise came from play

ing basketball, how much time did the student spend playing basketball that week? Enter your answer in hours; do not include units in your answer.
Mathematics
1 answer:
LUCKY_DIMON [66]2 years ago
6 0

Answer:

The student spent 48 minutes and 45 seconds playing basketball.

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harkovskaia [24]
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Probability question, which I am stuck on!
son4ous [18]

Answer:

land on 3: 36 times

land on 4: 63 times

Step-by-step explanation:

A biased dice is the opposite of a fair dice.

A fair dice has the same probability of landing any of the six numbers: 1/6

The biased dice has different probabilities for its results.

To solve this question, first we need to find the probability of landing a 3.

The sum of all probabilities need to be 1, so:

0.13 + 0.05 + p(3) + 0.21 + 0.19 + 0.3 = 1

p(3) = 1 - 0.88 = 0.12

If we roll the dice 300 times, the expected number of times the dice will land:

on 3: 300 * p(3) = 300 * 0.12 = 36 times

on 4: 300 * p(4) = 300 * 0.21 = 63 times

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3 years ago
Help to answer this question?
rosijanka [135]

Answer:

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Step-by-step explanation:

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3 years ago
Which two-dimensional shapes are needed to build the triangular prism
Nastasia [14]

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3 years ago
A half-acre building lot is five times as long as it is wide. What are its dimensions?
Gnoma [55]

we know that

A half-acre is equal to----------> 2,023.43\ m^{2}

Let

x---------> the length side of the building lot

y--------> the width side of the building lot

A------> Area of the building lot

x=5y-------> equation 1

A=2,023.43\ m^{2}

A=x*y

2,023.43=x*y --------> equation 2

substitute equation 1 in equation 2

2,023.43=[5y]*y

5y^{2}= 2,023.43\\y^{2}= 404.686\\y= 20.11\ m

<u>Find the value of x</u>

x=5y---> x=5*20.11--> x=100.55 m

therefore

<u>the answer is</u>

the dimensions of the building lot are 100.55 m* 20.11 m

6 0
3 years ago
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