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
Brrunno [24]
3 years ago
6

In an honors math class of 25 students, 15 are boys and 10 are girls. On the final exam, 6 boys and 3 girls received a grade of

A. If a student is chosen at
random from this class, what is the probability of choosing a girl or a student who did not receive an A on the exam?
1
0.76
2
0.64
3
0.40
0.28
Submit Answer
Mathematics
1 answer:
postnew [5]3 years ago
7 0

Answer:

Step-by-step explanation:

b=boy

a= a on the exam

b=15

b∩a=6

b'∩a=3

b'∪a'=?

b'∪a'= b'+a'-b'∩a'

a= b∩a+b'∩a (law of total probability) = 9

a'= 25-9 = 16

b'= 25-15= 10

16+10-7=19

19/25= .76

You might be interested in
Name a decimal between 0.4 and 0.5
Aliun [14]

To find a number between both decimals, what you can do is take the average of both numbers.

We have then:

average = \frac{0.4+0.5}{2}

Rewriting we have:

average = \frac{0.9}{2} \\average = 0.45

Therefore, the decimal obtained is a number between 0.4 and 0.5

Answer:

a decimal between 0.4 and 0.5 is:

average = 0.45

6 0
3 years ago
Read 2 more answers
Patrons in the children's section of a local branch library were randomly selected and asked their ages. The librarian wants to
Zinaida [17]
To make a dot plot, make a numbered line and add dots above the numbers of the given ages. If there are more than one of the same number, add a dot above the dot already there.

 See attached picture:



5 0
3 years ago
A box contains 95 pink rubber bands and 90 brown rubber bands. You select a rubber band at random from the box. Find each probab
Hatshy [7]
You have a 1/95 chance of pulling a pink rubber band. You have a 1/90 chance of pulling a brown rubber band
4 0
3 years ago
An unknown number b is 10 more than an unknown number k. the number b is also k less than 8. the equations to find k and b are s
Dmitriy789 [7]
Just add the two equations together.
2b = 18
b = 18/2
b = 9

9 = k + 10
9 - 10 = k
k = - 1

6 0
3 years ago
Read 2 more answers
An interior angle of a regular polygon has a measure of 135°. What type of polygon is it? hexagon octagon nonagon decagon
Juli2301 [7.4K]

its a octagon. e2020 approved, you can trust me

7 0
3 years ago
Read 2 more answers
Other questions:
  • Which is the graph of f(x) = 100(0.7X?
    14·1 answer
  • Find r for the geometric series s5=244 a1=4 and a5=324
    8·1 answer
  • What is 50/400 simplified
    9·2 answers
  • What is the solution to the given inequality?
    12·1 answer
  • A hyperbola has its center at (0,0), a vertex of (20,0 and an asymptote of y= 13/20x. find the equation that describes the hyber
    6·1 answer
  • Mean
    7·1 answer
  • The ratio of boys to girls in a class is 2:3. There are 30 students in the class. How many more girls than boys are there?
    15·1 answer
  • 3-x>2 or 4x+2> 10 what is the graph of the solution to the following compound inequality
    12·1 answer
  • I'm stuck on this homework question. I forgot the formula to find the side. This is 9th grade geometry.
    8·1 answer
  • 8. The equation at the right has been incorrectly solved.
    5·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!