MATHEMATICS MIDDLE SCHOOL

Out of a group of 120 students that were surveyed about water sports, 28 said they ski and 52 said they wakeboard. 16 of the students who said they ski said they also wake board. If a student is chosen at random, find
P( skiſ does not wake board)

Answers

Answer 1
Answer:

Answer:

10% of the students ski and do not wake board

Step-by-step explanation:

The total number of students is 120. 28 students ski while 52 students wake board. 16 of the students ski and wake board.

Let S represent students who ski and W represent those who wake board also W' represent those who do not wake board.

Therefore:

S = 28

W = 52

n = total number of student = 120

S ∩ W = those who ski and wake board = 16

Those who ski and do not wake board = S ∩ W' = S - (S ∩ W) = 28 - 16 = 12

Probability of those who ski and do not wake board = (S ∩ W') / n = 12 / 120 = 0.1 = 10%

10% of the students ski and do not wake board

Related Questions

Simplify (x2 + 3x)(x2 - x +4)
What does 4.875 mean in fraction
Translate into an expression:Two more than a number x squared.
The sum of the squares of three consecutive positive even numbers is 12296. Find the product of the three numbers divided by 8.
A dog pen is 18feet wide. Its lengthis twice the width.What is the totalperimeter of thepen?

How do you find 3 (x-2)^2

Answers

3 (x-2)^2
3 (x^2-2^2)

3x^2-12



We can have the basic inequalities and equalities’ sign. (>, =, <). 
These three set of symbols can discern, describe and explain the relationship between of numbers. These signs are used varying in many mathematical operations to explain and find discrepancy between value, sets of values or numbers in single and equitable category. 
Examples includes
 6 > 5; 6 is greater than 5; 5 is less than 6
 1 > -1; -1 is less than 1; 1 is greater than -1 
-2 = -2; -2 is equal to -2  

1/3 of the beads to be red, the greatest number of beads that will fit on the braid is 12, what other fractions could represent the part of the beads that are red

Answers

4/12 i think i'm not positive tho. Because if you divide 12 by 3 you get 4 and 12 stays the same and you can reduce it to 2/6 or 1/3.

A supplier sells 2 1/4 pounds of mulch for every 1 1/3 pounds of gravel. The supplier sells 1/72 pounds of mulch and gravel combined. How many pounds of each item does the supplier sell?

Answers

Answer:

108 pounds of mulch.

64 pounds of gravel.

Step-by-step explanation:

Let x be the amount of mulch sold and y be the amount of gravel sold.

We have been given that a supplier sells 2 1/4 pounds of mulch for every 1 1/3 pounds of gravel.  

2(1)/(4)=(9)/(4)

1(1)/(3)=(4)/(3)

We can represent this information as:

(x)/(y)=((9)/(4))/((4)/(3))...(1)

We are also told that the supplier sells 172 pounds of mulch and gravel combined. We can represent this information as:

x+y=172...(2)

From equation (1) we will get,

(x)/(y)=(9)/(4)*(3)/(4)

(x)/(y)=(27)/(16)

x=y*(27)/(16)

Substituting this value in equation (2) we will get,

y*(27)/(16)+y=172

Now let us have a common denominator.

(27y)/(16)+(16y)/(16)=172

(27y+16y)/(16)=172

16*(43y)/(16)=16*172

43y=2752

y=(2752)/(43)

y=64  

Therefore, the supplier sold 64 pounds of gravel.

Upon substituting y=64 in equation (2) we will get,

x+64=172

x=172-64

x=108

Therefore, the supplier sold 108 pounds of mulch.    

The vertices of a quadrilateral are (–2, 3), (4, 3), (–1, –1), and (5, –1).What type of quadrilateral is it?

A.
parallelogram

B.
rectangle

C.
trapezoid

D.
rhombus

Answers

I'm pretty sure its C

A) It is a parallelogram    


At a football game, your team lost 55 yards on the first play and then 77 yards on the second play. Which expression gives the total loss in yards?-7+5
-5−(-7)
-5+(-7)
5+(-7)

Answers

yup he is correct it is -5+(-7)

Hope it helps!
The answer is the third one (C?) because if you started at 0, you are going below it since you are losing yards, causing you to have less and less yards. Adding two negatives gives you a lesser amount.

Amanda and Katie are twins. At birth, Amanda was 6 3/10 pounds and Katie was 5 9/10 pounds. What is their combined birth weight?

Answers

Answer:

10 2/10

Step-by-step explanation:

because together it equals 9 12/10 but that cant happen so you add 1 to the 9 and get 10 so you have 2 left over

Mark me as brainliest
12.2 or 12 1/5

6 + 5 = 11
3/10 + 9/10 = 12/10
11 + 1 = 12 + 2/10
simplified is 1/5

12 1/5
Other Questions
If anyone can help me answer this it would be great thx
What is the equation 16 × 2
The graph of a proportional relationship contains the point (20, 4).What is the corresponding equation? Enter your answer as a fraction in simplest form in the box. y =  x
Show one way to count from $82 to $512