1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
kap26 [50]
3 years ago
11

In a survey of students, 80% were girls and 20% were boys. of the girls surveyed, 40% were wearing sneakers. if a surveyed stude

nts is selected at random, what is the probability the student is a girl wearing sneakers?
Mathematics
1 answer:
prisoha [69]3 years ago
3 0

Answer:

\frac{8}{25}

Step-by-step explanation:

probability of selecting a girl from students is \frac{4}{5}

probability of girl wearing sneaker from girls is \frac{4}{10} or \frac{2}{5}

hence, probability of selecting a girl wearing a sneaker will be,

⇒ probability = probability of delecting a girl from students × probability of girl wearing sneakers from girls

⇒ probability = (\frac{4}{5})( \frac{2}{5})

⇒ probability = \frac{8}{25}

You might be interested in
Whats the midline equation ?
PSYCHO15rus [73]

Answer:

sorry i did not see my link

Step-by-step explanation:

8 0
2 years ago
Read 2 more answers
What is the value of x, if 105% of 90 is equal to 200% of x?
lisov135 [29]

From the given equation

105% * 90 = 200% * x

105/100 * 90 = 200/100 * x

105*90 = 200*x

x = 105*90/200

X = 21*9/4

X = 189/4

x = 47.25

Value of x = 47.25 or 47 1/4

7 0
3 years ago
Read 2 more answers
Pls answer 13 b ill mark u brainlist
gladu [14]

Answer:

7 students

Step-by-step explanation:

1+2+4=7students

5 0
2 years ago
Number 9 please. I need help
Sloan [31]

(1/12)X = 6800

6800/ (1/12) = X

X = 81600 (hours)

6800 (6.8 * 10^3) divided by 1/12 (12^-1) equals 81600. It will take 81600 hours for the pool to completely empty at a rate of 0.833333333 or 12^-1 gallons per second.

8 0
3 years ago
There are two calculus classes at your school classes have a class average of 75.5 the first class as a standard deviation of 10
DENIUS [597]
To compare the two classes, the Coefficient of Variation (COV) can be used.

The formula for COV is this:
C = s / x

where s is the standard deviation and x is the mean

For the first class:
C1 = 10.2 / 75.5
C1 = 0.1351 (13.51%)

For the second class:
C2 = 22.5 / 75.5
C2 = 0.2980 (29.80%)

The COV is a test of homogeneity. Looking at the values, the first class has more students having a grade closer to the average than the second class.
8 0
3 years ago
Other questions:
  • The sum of a number and four is less than twelve
    14·1 answer
  • 229 divided into 2895
    9·2 answers
  • 7/9 as a decimal please
    6·2 answers
  • Please help me! I’m desperate
    9·1 answer
  • (1/3)^x -81=-54 what does x=
    15·1 answer
  • What is the solution of the system of equations? 3x + 6y = –2 15x + 30y = –10
    12·2 answers
  • -6=1/4x-5 solve for x<br><img src="https://tex.z-dn.net/?f=%20-%206%20%3D%201%20%5Cfrac%7B1%7D%7B4%7D%20x%20-%205" id="TexFormul
    9·1 answer
  • 10 increased by the<br>quotient of a number<br>and 2 is 13.​
    8·1 answer
  • Kristina is four-fifths as old as her sister. Kristina is 12 years old. Write a multiplication equation and solve the equation t
    5·1 answer
  • Probability of getting the letters E and A?
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!