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Gelneren [198K]
2 years ago
13

A class of 32 students contains 15 boys.

Mathematics
2 answers:
Sunny_sXe [5.5K]2 years ago
8 0

Answer:

11

Step-by-step explanation:

LiRa [457]2 years ago
3 0

Answer:

11 boys walk to school each day

Step-by-step explanation:

<em>*The following will be assumed: the only genders of students in the class are male or female; the only options for getting to school are walking or not walking</em>

If there are 32 students in the class total, and there are 15 boys,

32 - 15 = 17

there are 17 girls.

If 8 of these girls do not walk to school,

17 - 8 = 9

9 girls walk to school

So, if 20 total students walk to school, and 9 of those are girls

20 - 9 = 11

11 boys walk to school each day.

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On a Sunday night, there are four people on a bus. The bus has five stops left before it end sits route. Suppose each person wil
allochka39001 [22]

There are two possible outcomes of this experiment either success p or failure q. It has a given number of trials and all trials are independent therefore it is<u><em> binomial probability distribution.</em></u>

1-  5 ways

2- 5/16

3- 1/16

4- 1/16

In the question given above n= 5 p =1/2 q= 1/2  r is the given point.

  1. <u>Part 1:</u>

The number of ways in which different people get off the bus can be calculated using combinations since the order is not essential. Therefore

nCr= 5C4= 5 ways

<u>2. Part 2:</u>

The probability that all four people get off the bus on the first stop is given by :

P (x= 1)= 5C1 (1/2)^0(1/2)^4= 5(1/2)^4= 5/16

<u>3. Part 3:-</u> The probability that all four people get off the bus on the same stop.

P (x= x)= 5C5 (1/2)^0(1/2)^4= 1(1/2)^4= 1/16

<u>4. Part 4-</u> The probability that <u><em>exactly three of the four</em></u> people get off the bus on the same stop.

P (x= x)= 5C5 (1/2)^3(1/2)^1= 1(1/2)^4= 1/16

For binomial distribution click

brainly.com/question/15246027

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3 0
2 years ago
What is the ratio of 1.5 inch screws to 2.5 inch screws?
Ugo [173]

Step-by-step explanation:

1.5 : 2.5

= 1.5/2.5

15/25

3/5

the ratio is 3 : 5

4 0
3 years ago
Which is a factor of each term of the polynomial? (72−12) CLEAR CHECK 7 2 7
Inessa [10]

Answer:

12

Is the greatest factor

Step-by-step explanation:

All factors include

2,3,4,6,12

Thats it

3 0
3 years ago
Evaluate the expression 4•9+6/-3
kykrilka [37]
You have to multiplying first, then adding on 6 over negative 3 as a fraction. The parentheses it will be multiplying.

(4)(9)+6/-3 

= 34.

It will help you.

Have a great day!


-Charlie
8 0
3 years ago
Read 2 more answers
1. PART A: Determine the missing lengths:
Otrada [13]

#1

Divide into two rectangles

\\ \tt\hookrightarrow "1"=14-12=2

\\ \tt\hookrightarrow "2"=3+1=4

#2

\\ \tt\hookrightarrow P=14+1+12+3+2+4=36

#3

\\ \tt\hookrightarrow A=14(1)+3(2)=14+6=20units^2

3 0
2 years ago
Read 2 more answers
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