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
motikmotik
2 years ago
7

Xander spends most of his time with his 10 closest friends. he has known 4 of his 10 friends since kindergarten. if he is going

to see a movie tonight with 3 of his 10 closest friends, what is the probability that the first 2 of the friends to show up to the movie are friends he has known since kindergarten but the third is not? startfraction 1 over 30 endfraction startfraction 9 over 125 endfraction startfraction 12 over 125 endfraction startfraction 1 over 10 endfraction
Mathematics
1 answer:
Mademuasel [1]2 years ago
5 0

Probability that the first 2 of the friends to show up to the movie are friends he has known since kindergarten but the third not is 1/10

Total friends = 10

Friends from kindergarten = 4

Probability is the chance that a given event will occur. Probability of an event lies within 0 to 1

P(E) = Favourable outcomes / Total outcomes

Probability of getting 1st friend from kindergarten = 4/10

Probability of getting 2nd friend from kindergarten = 3/9

Probability of getting 3rd friend not from kindergarten = 6/8

Since all these probabilities are independent, We can use Multiplicative identity.  Thus,

Required probability is 4/10 * 3/9 * 6/8

= 1/10

Thus, Probability that the first 2 of the friends to show up to the movie are friends he has known since kindergarten but the third not is 1/10

To learn more, visit:

brainly.com/question/7514534

#SPJ4

You might be interested in
(1/2y-50)(3/5y+10) what is the answer?
GenaCL600 [577]

The answer is 3/10y^2 - 25y - 500. Glade I could help!

3 0
3 years ago
When 0.5(20x – 50y + 36) – 0.25(–100x + 40y – 12) is simplified, what is the resulting expression?
stiks02 [169]

Answer:

<h2>35x - 35y + 21</h2>

solution,

0.5(20x - 50y + 36) - 0.25( - 100x + 40y - 12) \\  = 10x - 25y + 18  + 25x - 10y + 3 \\

Combine the like terms:

= 10x + 25x - 25y - 10y + 18 + 3 \\

Simplify:

35x - 35y + 21

Hope this helps...

Good luck on your assignment...

6 0
3 years ago
F(6,2) G(2,4)<br> Write equation in slope intercept form
Ulleksa [173]

Answer:

y = -½x + 5

Step-by-step explanation:

Formula for slope intercept form is y = mx + b

Where m represents the slope and b represents the y intercept

.............................

Solving for m

...........................

m = (y2 - y1)/(x2-x1)

y2 = 4, y1 = 2

x2 = 2, x1 = 6

m = (4-2)/2-6)

m = 2/(-4)

m = -½

.......................

Solving for b

.........................

Using point F(6,2) as reference

y = 2, x = 6, m = -½

if y = mx + b

Substituting 2 for y and 6 for x in the above equation

2 = -½ * 6 + b

2 = -3 + b

2 + 3 = b

5 = b

b = 5

OR

Using Point G(2,4) as reference

y = 4, x = 2, m = -½

if y = mx + b

Substituting 4 for y and 2 for x in the above equation

4 = -½*2 + b

4 = - 1 + b

4+1 = b

5 = b

b = 5

.............................................

Finally, we have to write the equation in slope form

Using y = mx + b

where m = -½ and b =5 ................ (Calculated)

y = -½x + 5

8 0
3 years ago
I need to know how to dos these problems? Can you explain how to do them?
drek231 [11]
The answer for 4 is 8(3+5) 

6 0
3 years ago
Read 2 more answers
Find the area please
tatuchka [14]

Answer:

D

Step-by-step explanation:

Recall that the area of a triangle is given by:

\displaystyle A = \frac{1}{2} bh

In this case, the base is <em>x</em> and the height is <em>y</em>. Hence:

\displaystyle A = \frac{1}{2} xy

We can write the following ratios:

\displaystyle \sin \alpha = \frac{x}{12} \text{ and } \cos \alpha = \frac{y}{12}

Solve for <em>x</em> and <em>y</em>:

\displaystyle x = 12\sin \alpha \text{ and } y = 12\cos \alpha

Substitute:

\displaystyle A = \frac{1}{2}\left(12\sin \alpha\right)\left(12\cos \alpha\right)

And simplify. Hence:

\displaystyle A = 72\sin \alpha \cos\alpha

In conclusion, our answer is D.

6 0
3 years ago
Other questions:
  • S, U, N are collinear. What point is between the other two if NU = 1, SU = 2, SN = 3? NU + US = NS.
    15·1 answer
  • The binary string 01000110001000 is a floating-point number expressed using the 14-bit simple model given in your text. (There a
    6·1 answer
  • How do I simplify this expression <br><br>(-3)(4x - 12)​
    6·2 answers
  • Match each trig function to a ratio. cos (A) =
    8·1 answer
  • A drawer contains black socks and white socks. A person randomly selects two socks without replacement. The probability of selec
    7·1 answer
  • Look at this shape: Which image shows a reflection? vo A B C с​
    12·2 answers
  • HELPP PLEASE ANYONEEE THUS IS ALGEBRA 1 WRITE THE SLOPE INTERCEPT FORM OF THE EQUATION OF THE LINE :”(( I WILL MARK BRAINLIEST P
    6·1 answer
  • Given that log x = 3 and log y = 5, find log (x^2)(y^2)- log xy
    7·1 answer
  • Shelly is going shopping at the mall to buy 3 pairs of shoes. She has a coupon for $2 off per pair of shoes after buying the fir
    14·1 answer
  • I promise I'll give you a BRAINLIEST if you add the working out
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!