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3 years ago

In a group of 20 pupils, 2 play the flute only.

Mathematics

2 answers:

earnstyle [38]3 years ago

7 0

Answer:

there is a 20% probability that the chosen student plays neither

Step-by-step explanation:

14+2+2=16

20-16=4

4/20= 1/5

1/5= 0.2

0.2= 20%

andrey2020 [161]3 years ago

6 0

It’s 20 percent is the probability of a student getting chosen

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Answer is -66 but show the work of how you got that answer

Greeley [361]

Answer:

-66

Step-by-step explanation:

P(8) = -8^2 - 2

-64 -2 = -66

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2 years ago

17 more than some number is 57

anastassius [24]

17+x=57.
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3 years ago

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Assume that thermometer readings are normally distributed with a mean of degrees and a standard deviation of 1.00degrees C. A th

Andrew [12]

Answer:

0.2684 is the probability that the temperature reading is between 0.50 and 1.75.

Step-by-step explanation:

We are given the following information in the question:

Mean, μ = 0 degrees

Standard Deviation, σ = 1 degrees

We are given that the distribution of thermometer readings is a bell shaped distribution that is a normal distribution.

Formula:

$z_{score} = \displaystyle\frac{x-\mu}{\sigma}$

P(Between 0.50 degrees and 1.75 degrees)

$P(0.50 \leq x \leq 1.75)\\\\ = P(\displaystyle\frac{0.50 - 0}{1} \leq z \leq \displaystyle\frac{1.75-0}{1})\\\\ = P(0.50 \leq z \leq 1.75)\\= P(z \leq 1.75) - P(z < 0.50)\\= 0.9599 - 0.6915 = 0.2684 = 26.84\%$

0.2684 is the probability that the temperature reading is between 0.50 and 1.75.

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3 years ago

The last time you bough pizza, 3 pizzdis was enough for 7 people. At that rate, how

garri49 [273]

Answer:

15 pizzas.

Step-by-step explanation:

The rate is 3 pizzas for every 7 people. If there are 35 people at the party (7 times 5), the amount of pizzas you should buy is 15 pizzas (3 times 5). Hope I explained that well (^^'')

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2 years ago

What is a correct name for the angle shown?

Masteriza [31]

Answer:

the answer is option B. angle S.

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3 years ago

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