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
Dmitriy789 [7]
3 years ago
13

A coin is tossed, and a standard number cube is rolled. What is the probability that the coin shows heads and the number cube sh

ows an even number?
A 1/6
B 1
C 1/4
D 1/2
Mathematics
1 answer:
Ainat [17]3 years ago
7 0
So,

Since this is independent probability, the probability of the event above occurring is:
(probability\ of\ heads)(probability\ of\ even\ no.)

First, the probability of landing on heads.
\frac{1}{2}

Now, the probability of rolling an even number.
<u />\frac{3}{6}\ or\  \frac{1}{2}

Plug it into the equation.
\frac{1}{2} * \frac{1}{2} =  \frac{1}{4}

The correct option is C.
You might be interested in
A manager at a local company asked his employees how many times they had given blood in the last year. The results of the survey
Lubov Fominskaja [6]

Answer:

Var(X) = E(X^2) -[E(X)]^2 = 4.97 -(1.61)^2 =2.3779

And the deviation would be:

Sd(X) =\sqrt{2.3779}= 1.542 \approx 1.54

Step-by-step explanation:

For this case we have the following distribution given:

X        0         1       2       3       4         5        6

P(X)  0.3   0.25   0.2   0.12   0.07   0.04   0.02

For this case we need to find first the expected value given by:

E(X) = \sum_{i=1}^n X_i P(X_I)

And replacing we got:

E(X)= 0*0.3 +1*0.25 +2*0.2 +3*0.12 +4*0.07+ 5*0.04 +6*0.02=1.61

Now we can find the second moment given by:

E(X^2) =\sum_{i=1}^n X^2_i P(X_i)

And replacing we got:

E(X^2)= 0^2*0.3 +1^2*0.25 +2^2*0.2 +3^2*0.12 +4^2*0.07+ 5^2*0.04 +6^2*0.02=4.97

And the variance would be given by:

Var(X) = E(X^2) -[E(X)]^2 = 4.97 -(1.61)^2 =2.3779

And the deviation would be:

Sd(X) =\sqrt{2.3779}= 1.542 \approx 1.54

 

8 0
3 years ago
Please help ASAP I am very dumb​
igomit [66]

Answer:

C

Step-by-step explanation:

calculate like terms, then it is pretty simple from there.

4 0
3 years ago
Read 2 more answers
My dad is 5ft8 my mom is 5ft5 I am between 4ft11 and 5ft0 how tall will I be later on im a boy btw
coldgirl [10]

Answer:

There is no way to tell

Step-by-step explanation:

You could be way taller than your parents, the same height, or shorter. There are too many variables at play here.

7 0
3 years ago
Convert 60ft/s to km/h can someone tell me how to work this problem out?
stellarik [79]
3280.839895 ft = 1 km
60 ft = 60/3280.839895 = 0.018288 km

60 ft/s = 0.018288 km/s = 0.018288 x 60 x 60 = 65.8368 km/h
3 0
2 years ago
What is 20 + 52????ANSWER IT QUICKLY PLEASE
Evgen [1.6K]
The answer to 20+50 is 72
8 0
2 years ago
Read 2 more answers
Other questions:
  • Use the diagram to complete the statement. m angle ECD=
    7·1 answer
  • To win at LOTTO in a certain state, one must correctly select 6 numbers from a collection of 52 numbers (1 through 52). The orde
    13·1 answer
  • Subtracting the lowest score in a data set from the highest is the appropriate way to calculate the __________. A. range B. medi
    13·2 answers
  • Luis wants to buy a skateboard that usually sells for $79.97. All merchandise is discounted by 12%. What is the total cost of th
    9·1 answer
  • Today the entire school 250 students went to the soap box derby the math club went in 2 vans and each van held 6 students how ma
    14·1 answer
  • What is a - 2 +3 = -2
    15·1 answer
  • Find the measurement of the missing angles in each triangle. Explain your steps.
    6·1 answer
  • Please do this thank you will give brain liest if correct..
    14·2 answers
  • Sasha is twice as old as Kapila. If Kapila is x years old, find their total age.
    5·1 answer
  • Which is the correct answer for 7 x 8 = 56
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!