Danny flips four well-balanced coins. What are the odds that two of the coins will land ‘heads’ up?
Answer:
0.375 = 37.5% probability that two of the coins will land ‘heads’ up
Step-by-step explanation:
For each coin, there are only two possible outcomes. Either it lands heads, or it lands tails. The probability of a coin landing heads is independent of any other coin. This means that the binomial probability distribution is used to solve this question.
Binomial probability distribution
The binomial probability is the probability of exactly x successes on n repeated trials, and X can only have two outcomes.
[tex]P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}[/tex]
In which [tex]C_{n,x}[/tex] is the number of different combinations of x objects from a set of n elements, given by the following formula.
[tex]C_{n,x} = \frac{n!}{x!(n-x)!}[/tex]
And p is the probability of X happening.
Four well-balanced coins.
This means that [tex]n = 4, p = 0.5[/tex]
What are the odds that two of the coins will land ‘heads’ up?
This is P(X = 2).
[tex]P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}[/tex]
[tex]P(X = 2) = C_{4,2}.(0.5)^{2}.(0.5)^{2} = 0.375[/tex]
0.375 = 37.5% probability that two of the coins will land ‘heads’ up
im almost done with this hw. plz help!!! give explanation if you actually know the answer so ik u dont just want points
Answer:
B
Step-by-step explanation:
That's the only answer that represent the 25% prize rate
Can you help me with this?
Answer:
1. Obtuse
2. Right
3.Acute
4.Acute
5.Right
6.obtuse( Not sure about this one)
find the unit rate of 12 dozen ears of corn that cost $36.00
PLSSSSSSSSSSSS HELP LAST QUESTION
Answer:
(12+g)-7
Step-by-step explanation:
Answer:
1. x-5
3. (12+g)-7
sorry don't know number 2
PLSSS HELP (4x - 1)
(3x)
Answer:
x = 13
Step-by-step explanation:
3x + 4x-1 +90 = 180
7x = 91
x = 13
Please Help!!!
You shared a bag of fruit snacks with 4 friends. You and each of your friends got 35 or fewer fruit snacks. Solve the inequality below to find the number of fruit snacks that could be in the bag.
Answer: option 4 x < 175
x/5 < 35
multiply both sides by 5
x < 175
(i can’t do the correct symbol but you get the idea)
Step-by-step explanation:
4×=175
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How do I solve this problem?And if a bot puts a link on my question,then what i'm going to do is report the bot.
Micah and crystal purchase two movie tickets. Tickets cost $8.50 each. drinks cost $3.50 each, and the boxes of candy cost $3.00 each. use an algebraic expression to desribe how much they spend based on the number of tickets, drinks and boxes of candy they buy
Answer:
2t+2d+2c=30
2(8.50)+2(3.50)+2(3.00)=$30
Step-by-step explanation:
t= tickets (8.50)
d= drinks (3.50)
c= candy (3.00)
is this a function? please help
2+2+2+2+67 I really need help
Answer: the answer is 75
Step-by-step explanation:
67 x 4
Help quick!like really quick
Answer:
2 is 2930in²
Step-by-step explanation:
A number d is greater than −5.
Answer: d > -5
Step-by-step explanation: Just convert the greater than into a symbol, and you'll be good to go.
Hope this helps!
Question
Use a number line to compare the following fractions: 4/3 7/6
The comparison is that:
4/3 is greater than 7/6 and 7/6 is less than 4/3
The fractions are given as:
4/3 and 7/6
See attachment for the number line that represents both fractions
From the number line. 4/3 is at the right of 7/6
This means that:
4/3 is greater than 7/6 and 7/6 is less than 4/3
Read more about number lines at:
https://brainly.com/question/10851163
what does 3 x 2/5 equal?
Answer:
you would get 1.2
Answer:
Step-by-step explanation:
exact form 6/5
decimal form 1.2
mixed number form 1 1/5
Amelia went to the candy store and bought 5/6 of a pound of candy. If 1/2 of Amelia's candy
was chocolate, how many pounds of chocolate candy did Amelia buy?
Answer:
5/12 pounds of chocolate
Step-by-step explanation:
converting 5/6 to 10/12, half of that is is 5/12. hope this helps !!! :D
Answer: 5/12 or about 0.42
Step-by-step explanation:
You are looking for 1/2 of 5/6
5/6 times 1/2 = 5/12
I hope it helps!
Rewrite -11 + x=7 use the same number just other orders
Answer:
7 = -11 + x
you can also do x - 11 = 7 or 7 = x - 11
hope these are the rewrites you are looking for
Step-by-step explanation:
Does the relation {(5,-2), (5,-8), (4,-6), (7,-1)} represent a function?
Answer:
no, it does not
Step-by-step explanation:
if it was a function, all the x values would've been different, but since 5 is repeated, it is not a function.
Answer: No
Step-by-step explanation:
Find the volume of a cylinder that has a height of 8 inches and a diameter of 14 inches.
Answer:
[tex]V=1232\ inches^3[/tex]
Step-by-step explanation:
Given that,
The height of a cylinder, h = 8 inches
The diameter of the cylinder, d = 14 inches
Radius, r = 7 inches
We need to find the volume of the cylinder. The formula for the volume of a cylinder is given by :
[tex]V=\pi r^2 h\\\\=\dfrac{22}{7}\times 7^2\times 8\\\\V=1232\ inches^3[/tex]
So, the volume of the cylinder is equal to [tex]1232\ inches^3[/tex].
Find m Measure of angle A =
Answer:
a = 104
Step-by-step explanation:
a = 104 because it is an inscribed angle with an arc of 208 degrees
What is the answer to 3/4= 6
Answer:
False
Step-by-step explanation:
Exposure to ionizing radiation is known to increase the incidence of cancer. One thousand laboratory rats are exposed to identical doses of ionizing radiation, and the incidence of cancer is recorded during subsequent days. The researchers find that the total number of rats that have developed cancer t months after the initial exposure is modeled by for months. Find the rate of growth of the number of cancer cases at the 7th month.
Missing information :
The model was omitted from the question ; the possible model relating to the question was browsed online and could possibly be :
N(t) = 1.07t^2.3 for 0 ≤ t ≤ 10 months
Answer:
30.9 cases per month
Step-by-step explanation:
Given the model to determine the number of rats that have developed cancer after initial exposure ; N(t) = 1.07t^2.3
N(t) = 1.07t^2.3
Take the first derivative of N with respect to t to obtain the rate of change ;
N'(t) = (1.07)(2.3)t^2.3-1
N'(t) = (1.07)(2.3)t^1.3
The rate of growth of cancer cases at the 7th month can be calculated thus :
t = 7
N'(7) = (1.07)(2.3)t^1.3
N'(7) = 1.07 * 2.3 * 7^1.3
N'(7) = 1.07 * 2.3 * 12.549529
N'(7) = 30.884
The rate of growth of cancer at the 7th month is 30.9 cases per month.
Find the area of this circle. Use 3 for .
A = 7r2
10 ft
[?] ft2
PLEASE HELP
Answer:
7.0686
your welcome :D.
Draw the following triangle after a translation 4 units to the left and 4 units up
Answer:
just move every corner (vertices) 4 up and 4 to the left
Eric is studying two number patterns. Pattern A starts at 0 and has the rule "add 6." Pattern B starts at 0 and has the rule "add 3." What is the relationship between corresponding terms in the two patterns?
The terms in Pattern B are 3 times the corresponding terms in Pattern A.
The terms in Pattern B are 2 times the corresponding terms in Pattern A.
The terms in Pattern B are one third the corresponding terms in Pattern A.
The terms in Pattern B are one half the corresponding terms in Pattern A.
Answer:
D) The terms in Pattern B are one half the corresponding terms in Pattern A.
Step-by-step explanation:
Pattern A | Pattern B
0 divided by 1/2 = 0
6 divided by 1/2 = 3
12 divided by 1/2 = 6
18 divided by 1/2 = 9
24 divided by 1/2 = 12
What is the approximate area of the circle shown below
Answer:
43 FT^2
Step-by-step explanation:
3.14159265359 x 3.7^2
Pi times the radius squared
Which functions have a period of 2 pi
Answer:
yes
Step-by-step explanation:
Math problem 8/3+(-9/4)
Answer:
[tex]\frac{5}{12}[/tex]
Step-by-step explanation:
Answer: =5/12
Step-by-step explanation: Hope this help :D
A circular table cloth has a radius of 24 inches. Mrs. Lopez is planning to sew a
piece of trim around the edge of the table cloth. To the nearest inch, how much
trim will she need?
Answer:
150 inches
Step-by-step explanation:
C=2πr
2·π·24 ≈ 150.79645
Mrs. Lopez need to sew a piece of cloth whose length be 150.72 inches.
What is circumference?A circumference gives the length around a circular object, it is the perimeter used for the circular objects.
Given that a circular tablecloth has a radius of 24 inches, we need to find the length around it,
So, the length around a circular object is its circumference,
We know that circumference of the circular object = π × diameter,
Diameter = 2 × radius = 48 inches.
So, the length around the circular cloth = π × 48
= 3.14 × 48
= 150.72
Hence Mrs. Lopez need to sew a piece of cloth whose length be 150.72 inches.
Learn more about circumference, click;
https://brainly.com/question/28757341
#SPJ2
Which of the following points are solutions to the system of inequalities
shown below?
Check all that apply.
x + y = 4+3
y > 4
O A. (2, -1)
B. (3,6)
C. (2,8)
O D. (1,5)
E. (1,1)
O F. (-1,8)