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Leviafan [203]
3 years ago
14

the probability that a pupil in a class has a calculator is 0.87. what is the probability that the pupil does not have a calcula

tor? in a fraction?
Mathematics
1 answer:
chubhunter [2.5K]3 years ago
8 0

Answer:

13/100

Step-by-step explanation:

we know that

The probability of the event occurring plus the probability of the event not occurring must equal to 1

If the probability that a pupil in a class has a calculator is 0.87

then

The probability that the pupil does not have a calculator is equal to

1-0.87=0.13

Convert to fraction

0.13=\frac{13}{100}

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A teacher asked his students to vote for an animal to be their class pet. Five-eighteenths of the students voted for a rabbit, O
ololo11 [35]

Answer:

<em>Since you didn't list the statements, I'll just list some true statements.</em>

-------------------------------------

There are 17 students in this class.

Majority of students voted for a hamster.

Snake was the least voted for.

5 0
3 years ago
HELP PLEASE might have to zoom in
Andrew [12]
The maximum number of batches in the table is 9
So, 6 more batches than the maximum number of batches is 9+6=15
Also, we must see that there is a trend in the total number of cookies
As the batch increases by one, we can see that the total number of cookies increases by 16
Hence, the total number of cookies when she bakes 15 batches is
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4 0
3 years ago
4. John has his money in a savings
Alja [10]

Answer:

false

Step-by-step explanation:

so D(2) is equal to how much money he has after 2 years while D(7) is after 7 years. since he earns 3% interest each year he will have more money after 7 years than 2 years

6 0
2 years ago
A survey was done that asked people to indicate whether they preferred to swim in a pool or in an ocean. The results are shown i
posledela
Given:
                                 Pool swimming        Ocean swimming    Total
Age 30 and younger             228                         54                 282
Over 30 years old                142                        185                 327
total                                    370                        239                609

Frequencies:
                                Pool swimming        Ocean swimming    Total
Age 30 and younger     228/609 = 0.37         54/609 = 0.09       282/609 = 0.46
Over 30 years old        142/609 = 0.23       185/609 = 0.30       327/609 = 0.54
<span>total                           370/609 = 0.61       239/609 = 0.39       609/609 = 1.00</span>

<span>The relative frequency (rounded to the nearest hundredth) of a person over 30 years old who prefers to swim in the ocean is 0.30</span>    
8 0
3 years ago
Read 2 more answers
1. The population of a city is 85,000 and is growing at a rate of 3% each year. Find how many people live in this city after 13
krek1111 [17]

Answer:

85000 x 0.03 = 2550 (per year)

2550 x 13 = 33150

85000 + 33150 = 118150

Step-by-step explanation:

Hope that helped! Have a nice day!

8 0
3 years ago
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