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
Nata [24]
3 years ago
15

In a second grade class containing 13 girls and 9 boys, 2 students are selected at random to give out the math papers. What is t

he probability that the second student chosen is a boy, given that the first one was a girl?
Mathematics
2 answers:
Finger [1]3 years ago
8 0
13/22 x 9/21 = 0.25                                               
Rashid [163]3 years ago
4 0

Answer:

42.86% probability that the second student chosen is a boy, given that the first one was a girl.

Step-by-step explanation:

Initially, there are 22 students, of which 13 are girls and 9 are boys.

The first student chosen was a girl, so now there are 21 students, of which 12 are girls and 9 are boys.

What is the probability that the second student chosen is a boy, given that the first one was a girl?

There are 21 students, of which 9 are boys. So there is a 3/7 = 0.4286 = 42.86% probability that the second student chosen is a boy, given that the first one was a girl.

You might be interested in
X-3y^3+3x^3-5x-x^3-x-2x^3
xxTIMURxx [149]

Answer:

-5x-3y^3

Step-by-step explanation:

x-3y^3+3x^3-5x-x^3-x-2x^3

7 0
3 years ago
Read 2 more answers
Factor the trinomial!! PLEASE HELP and if possible please explain how to do this!!
Nikitich [7]

Answer:

d.  a = 39

Step-by-step explanation:

Question:

for which value of "a" will the trinomial be factorizable.

x^2+ax-40

For the expression to have integer factors, a = sum of the pairs of factors of -40.

-40 has following pairs of factors

{(1,-40), (2,-20, (4,-10), (5,-8), (8, -5), (10,-4), (20,-2), (40,-1) }

meaning that the possible values of a are

+/- 39, +/- 18, +/- 6, +/- 3

out of which only +39 appears on answer d.  a=39

4 0
3 years ago
Find the solution of given expression<br><br><img src="https://tex.z-dn.net/?f=%20%5Csqrt%7B2545%20%5Ctimes%202545%7D%20" id="Te
poizon [28]

Answer:

√{2545×2545}=√2545²=±2545

7 0
2 years ago
Read 2 more answers
7) 28 is 35% of what number?​
Brums [2.3K]

Answer:

80

Step-by-step explanation:

28×100÷35=80

6 0
3 years ago
Pythagorean Theorem
Nutka1998 [239]
Make a scenario with a yard
3 0
3 years ago
Other questions:
  • How do you write an expression 4x362 using expanded form and place value?
    15·1 answer
  • Need help with this have no idea how to do it
    14·1 answer
  • When doing division and writing down the answer does the "remainder" get put behind a decimal point? (18 POINTS)
    14·1 answer
  • Melissa exercises for 20 minutes every day. She decides to increase her daily exercise time by 5 minutes each week. However, acc
    5·1 answer
  • latina had 12 marbles .after she gave 2 marbles to emilia,she has 10/12 of her marbles left.ehat fraction of the marbles dif lat
    12·2 answers
  • 3. Nicole has $17.50. Her grandmother gave
    5·2 answers
  • Solve the system by substitution
    15·1 answer
  • How to solve <br>(a-3)4​
    9·2 answers
  • 17 students on the math team want to raise 483.62 to buy practice books they have already raised 218.25 if each students raises
    11·1 answer
  • All ratios equivalent to 6:4.
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!