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
ludmilkaskok [199]
3 years ago
9

The probability that mary will win a game is 0.04, so the probability that she will not win is 0.96. if mary wins, she will be g

iven $200; if she loses, she must pay $14. if x = amount of money mary wins (or loses), what is the expected value of x? (round your answer to the nearest cent.)
Mathematics
1 answer:
frosja888 [35]3 years ago
8 0
Let
EV----------> <span>expected value
</span>
we know that

EV = (Probability of Winning)*(Value of Winning) + (Probability of Losing)*(Value of Losing)
so
EV=0.04*(200)+0.96*(-14)-----> EV=8+(-13.44)-----> EV=-$5.44
So
she expects to lose $5.44 every time she plays (this is on average)

the answer is
-$5.44
<span>

</span>
You might be interested in
Calculate how much each size per gram, and circle which gives the best value for money. 250g for $2.30, 400g for &amp;3.40, 1Kg
Bezzdna [24]
To do this, we must set up ratios:
Option One:
\frac{2.30}{250g}  \\  \frac{0.0092}{1g}  \\ 0.0092/g
The first options costs only $0.0092/gram (a fraction of a penny)!
Option Two:
\frac{3.40}{400g}  \\  \frac{0.0085}{1g} \\ 0.0085/g
The second option costs only $0.0085/gram (cheaper than option one)!
Option Three: 
This requires a little more work. First, we have to convert the grams into kilograms. For every 1 kg, there is 1,000 g. Therefore, 1,000g costs $5.65. Next, we set up the ratio as usual:
\frac{5.65}{1000g} \\  \frac{0.00565}{1g}  \\ 0.00565/g
The third option costs $0.00565/gram.

Therefore, option three is the cheapest! 

Hope this helps!
4 0
4 years ago
12 + 4x &gt; 24 or 10 - 12x &gt; 22
Wewaii [24]

Answer:

10 - 12 × > 22 Yan Yong sagot

8 0
3 years ago
An envelope is 3 inches wide, and it measures 7 inches along the diagonal. What is the envelope’s length? If necessary, round to
Crank

The length of the envelope is 6.3 inches

Step-by-step explanation:

Width of the envelope = 3 inches

Diagonal of the envelope = 7 inches

To find:

The length of the envelope.

Let the length of the envelope be 'l'

We can use pythogoras theorem to calculate the length.

l = √(49-9)

l = √(40)

l = 6.3 inches

The length of the envelope is 6.3 inches

7 0
3 years ago
Use triangle ABC below to answer the question that follows:
AnnyKZ [126]

Answer: Choice 1) The sum of the angles A and B are supplementary to angle C


Why is this the answer? Because we'll use facts 2 through 4 to help prove the triangles similar. If fact 2 is true, then fact 3 leads to helping set up the congruent corresponding angles (either A = D or C = E). Fact 4 is true because all angles are congruent to themselves, and this fact is the other angle pair we need to prove the triangles similar.


We don't use fact 1 even though it's a true statement. The fact that A+B+C = 180 isn't really useful to compare across two triangles.


3 0
3 years ago
Read 2 more answers
PLEASE PLEASE HELP WITH RIGHT ANSWERS THANK YOU
Bogdan [553]
Just quit school bro it’s not worth it
6 0
3 years ago
Other questions:
  • X+6 over x-8 in algebraic expression
    12·1 answer
  • In circle F, what is the measure of arc CB?
    9·1 answer
  • Sales tax is 6% and you spend $42. How much money will you spend on tax?
    9·2 answers
  • What iis 58937847865732569846257623+67563456343 divided by 462582??
    5·2 answers
  • How do you solve this? 18 " n=21
    10·1 answer
  • What’s the answer for number 9
    5·1 answer
  • Help! 20 points and brainliest
    10·2 answers
  • Which statement is true about the difference 2 square root of 7 − square root of 28 ?
    8·1 answer
  • There is two questions!
    5·1 answer
  • Simplify the expression. 32 1/5 = ​
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!