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aniked [119]
3 years ago
14

HELPP

Mathematics
1 answer:
I am Lyosha [343]3 years ago
8 0
Answer
A small class has five boys and six girls. A group of four students are to be selected at random to interview a new school director. a) Find the probability that the group contains at least one boy. b) Find the probability that the majority of the group is girls. c) Given that the group contains at least one boy, what is the chance that the boys are in the majority?
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How do I simplify 3(2a-8b)
Mumz [18]
You would have to do distribution. So you would have to multiply 3 by 2a and multiply 3 by -8b. 3 times 2a equals 6a (always keep the letter) and 3 times -8b equals -24b. (if there is only one negative number when multiplying, always keep the negative sign.) now you are left with 6a-24b. and since we cant put a into b, your answer would be 6a-24b. hopefully this helped you and sorry if it confused you
4 0
4 years ago
Read 2 more answers
The aspect ratio (the ratio of screen width to
Strike441 [17]

Answer:

Width = 36in

Size = 42.02

Step-by-step explanation:

Given

x \to width

y \to height

x : y = 16 : 9

Required

The size of screen of height 20,6in

First, we calculate the width using the following equivalent ratios

16: 9 = x : 20.6

Express as fraction

\frac{16}{ 9} = \frac{x }{ 20.6}

Solve for x

x = 20.6 * \frac{16}{ 9}

x = 36.62

Hence:

Width = 36in --- approximated

So, we have:

x = 36.62

y =20.6

The size (diagonal) is then calculated using:

Size = \sqrt{x^2 + y^2

Size = \sqrt{36.62^2 + 20.6^2

Size = \sqrt{1765.3844

Size = 42.02

Size =42in --- approximated

5 0
3 years ago
Is rolling a 5 on a traditional number cube
tamaranim1 [39]

Answer:

3. Likely

Step-by-step explanation:

8 0
3 years ago
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What is the derivative of x^3?
WITCHER [35]

Answer:

3x^{2}

Step-by-step explanation:

5 0
3 years ago
-5x - 1 help people
Lady bird [3.3K]

Answer:

5x + 1

Step-by-step explanation:

-5x - 1

to make -5x positive you have to divide both sides by -1

5x + 1

Hope this helps!!!

4 0
3 years ago
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