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2 years ago

In a group of 33 pupils, 1 plays the flute only.

Mathematics

1 answer:

sergiy2304 [10]2 years ago

5 0

Answer:

0.303

Step-by-step explanation:

The number of students who plays both flute and Piano can be obtained thus :

Let numbwr who plays both =x

Piano only + flute only + both + neither = total

12 + 1 + x + 10 = 33

23 + x = 33

x = 33 - 23

x = 10

Hence, probability that student plays both instrument :

P = required outcome / Total possible outcomes

P(plays both) = 10 / 33 = 0.303

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GuDViN [60]

Answer:

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Step-by-step explanation:

y = 7x + 20 -----> equation 1

4x - y = - 11

4x - ( 7x + 20 ) = - 11

4x - 7x - 20 = - 11

- 3x = - 11 + 20

- 3x = 9

x = 9 / - 3

x = - 3

Substitute x = - 3 in equation 1,

y = 7 ( - 3 ) + 20

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y = - 1

Hence,

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2. Y-intercept
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7 = (1)(2) + b
7 = 2 + b
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Therefore, the equation is: Y = 1x + 5 which is also the same thing as: Y= X +5.

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3 years ago

A triangle has vertices (2, 1), (5, 1), and (5,5). What is the length of the longest side of the triangle?

Lerok [7]

Answer:

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Step-by-step explanation:

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