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
CaHeK987 [17]
3 years ago
12

45 female signers, 40 male singers, 15 instrumental, what is probability that a set of 3 songs contain 1 male, 1 female, 1 inst.

Mathematics
1 answer:
Fantom [35]3 years ago
8 0

Answer:

5 I think

Step-by-step explanation:

You might be interested in
Please explain how to do this i am lost
mixas84 [53]

Answer: y = 7x - 6

Step-by-step explanation:

7 = m (slope)

-6 = y-intercept

8 0
3 years ago
Read 2 more answers
Find the inverse of the following matrix without using a calculator 1-1 2 -3 2 1 0 4 - 25
Artist 52 [7]

Answer:

18  -(17/3)   (5/3)

25  (25/3)  (7/3)

4    (4/3)     (1/3)

Step-by-step explanation:

You can solve this problem by using the Gauss-Jordan method.

You have the original matrix and then the Identity matrix.

So:

Original              Identity

1 -1 2                    1 0 0

-3 2 1                   0 1 0

0 4 -25                0 0 1

By the Gauss-Jordan method, in the original place you will have the identity and in the place that the identity currently is you will have the inverse matrix:

So, let's start by setting the first row element to 0 in the second and the third line.

The first row element of the third line is already at zero, so no changes there. In the second line, we need to do:

L2 = L2 + 3L1

So now we have the following matrixes.

1 -1 2        |            1 0 0

0 -1 7       |            3 1 0        

0  4 -25   |            0 0 1

Now we need the element in the second line, second row to be 1. So we do:

L2 = -L2

1 -1 2        |            1 0 0

0 1 -7       |            -3 -1 0        

0  4 -25   |            0 0 1

Now, in the second row, we need to make the elements at the first and third line being zero. So, we have the following operations:

L1 = L1 + L2

L3 = L3 - 4L2

Now our matrixes are:

1 0 -5       |            -2 -1 0

0 1 -7       |            -3 -1 0        

0 0 3       |            12 4 1

Now we need the element in the third line, third row being one. So we do:

L3 = -L3

1 0 -5       |            -2  -1     0

0 1 -7       |            -3  -1      0        

0 0 1       |            4    (4/3) (1/3)

Now, in the third row, we need the elements in the first and second line being zero. So we do:

L1 = L1 + 5L3

L2 = L2 + 7L3

So we have:

1 0 0 |       18  -(17/3)   (5/3)

0 1 0 |       25  (25/3)  (7/3)

0 0 1 |       4    (4/3)     (1/3)

So the inverse matrix is:

18  -(17/3)   (5/3)

25  (25/3)  (7/3)

4    (4/3)     (1/3)

4 0
3 years ago
What is the area of the triangle in cm?
LekaFEV [45]

Answer:

21

Step-by-step explanation:

6 0
2 years ago
Read 2 more answers
What is the slope of the line that passes through points (1/4,3) and (5,8)
Alex73 [517]

Answer:

20/19

Step-by-step explanation:

y2-y1/x2-x1

= 8-3/5-1/4

=20/19

8 0
2 years ago
Pls help will give branilest
EleoNora [17]
Hope this helps you

have a great day ^^

3 0
3 years ago
Other questions:
  • How would you find this answer?? Pls help me
    7·1 answer
  • Alex’s father is 5 times older than Alex and Alex is twice as old as his brother nick who is 5 years old how old is Alex’s fathe
    12·1 answer
  • Evan's family took a road trip to Niagrara Falls. Evan fell asleep 5% of the way through the trip. If Evan fell asleep after the
    11·1 answer
  • Write the standard form of the equation of the line that passes through point at (4,2) and is parallel to whose equation is y=2x
    7·1 answer
  • Rational roots of f(x)=5x^2-3x+3
    7·1 answer
  • Simplify 5 2 thirds
    7·2 answers
  • Zoe is a party planner. She orders cupcakes and sheet cakes from Creative Cakes whenever she needs beautiful cakes to serve. One
    6·1 answer
  • Elena and Noah used different methods to compute 0.23 x 1.5. Both calculations were correct. Analyze the 2 methods.
    10·1 answer
  • HELP ASAP!! please help me answer 2 and 5.
    13·1 answer
  • PLSSS HELPPPP I WILLL GIVE YOU BRAINLIEST!!!!!!
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!