The law of large number states that , if number of trials increases in an experiment , in a fair trial where each outcome has same chance of occurring or having equal probabilities,when total number of trials goes higher and higher the probabilities of each single outcome becomes approximately equal.→→In case of Experimental Probability
The Coin Possessed by Jake is a Magic coin.
Now Outcomes received by jake when he tosses the coin certain number of times.He flipped it 100 times, and found that it came up heads 64% of the time. He flipped it another 500 times, and it came up heads 57% of the time. He then flipped it 1000 times, and it came up heads 58% of the time. Then, he flipped it 1500 times, and it came up heads 62% of the time.
Based on the information provided , it appears that coin is not fair . It is Unbiased.So , if we apply law of large numbers here after number of trials will go higher and higher , the chances of coming head will be more than tail i.e theoretical probability of the magic coin coming up heads is> 50%.
To test my hypothesis i have used the information provided by Jake, which shows that coin is not fair. The probability of head has more than tail i.e by 14%, 7%,8% and 12%.
the graph of a proportional relationship contains the point 8 and 4 what is the corresponding equation enter your answer as a fraction in simplest form in the box
Answer:
[tex]y=\frac{1}{2}x[/tex].
Step-by-step explanation:
We have been given that the graph of a proportional relationship contains the point 8 and 4.
Since we know that a proportional equation is in form: [tex]y=kx[/tex], where k is constant of proportionality.
Let us substitute x=8 and y=4 in proportional equation to find constant of proportionality for our equation.
[tex]4=k*8[/tex]
Upon dividing both sides of equation by 8 we will get,
[tex]\frac{4}{8}=\frac{k*8}{8}[/tex]
[tex]\frac{4}{8}=k[/tex]
[tex]\frac{1}{2}=k[/tex]
Let us substitute k=1/2 in proportional equation.
[tex]y=\frac{1}{2}x[/tex]
Therefore, our desired equation will be [tex]y=\frac{1}{2}x[/tex].
Write the first five terms of the sequence defined by the explicit formula.
Answer:
(a) 112, 28, 7, (7/4), (7/16)
Step-by-step explanation:
The sequence is given by the explicit formula
[tex]a_{n} = 112 (\frac{1}{4} )^{n-1}[/tex]
The terms of the sequence are :
[tex]a_{1} = 112 (\frac{1}{4} )^{1-1} = 112 (\frac{1}{4} )^{0} =112 [/tex]
[tex]a_{2} = 112 (\frac{1}{4} )^{2-1} = 112(\frac{1}{4} ) =28 [/tex]
[tex]a_{3} = 112 (\frac{1}{4} )^{3-1} = 112(\frac{1}{4} )^{2} = 7 [/tex]
[tex]a_{4} = 112 (\frac{1}{4} )^{4-1}=112(\frac{1}{4} )^{3} = \frac{7}{4}[/tex]
[tex]a_{5} = 112 (\frac{1}{4} )^{5-1}=112 (\frac{1}{4} )^{4} = \frac{7}{16}[/tex]
What is m∠S?
Enter your answer in the box.
__°
An isosceles triangle with vertices labeled R, S, and T. Side R T is the base. Sides R S and side S T are equal. Angle R is labeled as 3 x degrees, angle S is labeled as 2 x degrees, and angle T is labeled as 3 x degrees.
Answer:
∠S = 45°
Step-by-step explanation:
As given in the question, ∠R = 3x ; ∠S=2x ; ∠T=3x
So by using angle sum property of a triangle that sum of all the angles of a triangle is 180°.
We get, ∠R+∠S+∠T = 180
[tex]3x+2x+3x=180\\8x=180\\x=\frac{180}{8}[/tex]
So, ∠S=2x
∠S=[tex]2\cdot \frac{180}{8}[/tex]
∠S=45°
Answer:
m∠S= 45°
Step-by-step explanation:
Given an isosceles triangle ABC.
& m∠R = m∠T = 3 x, m∠S = 2 x
The sum of all the angles of triangle is equal to 180°
⇒ m∠R + m∠S + m∠T = 180°
3 x + 2 x + 3 x = 180°
⇒ 8 x = 180°
⇒ x = [tex]\frac{180}{8}[/tex]
⇒ x = [tex]\frac{45}{2}[/tex]
Hence, m∠S = [tex]2\times\frac{45}{2}[/tex]
= 45°
write the sentences below as a mathematical expression.
1. the sum of a number and 9
2. 12 decreased by some number
3. some number decreased by 7
4. twice a number
5. 2 times a number
6. a number dived by 8
7. the quotient of a number and 3
8. double the sum of 8 and a number
1. a+9
2. 12-x
3. x-7
4. 2a
5. 2a
6. a:8
7. a/3
8. 2(8+a)
explicit formula for 12,19,26,33,40
Answer:
Step-by-step explanation:
The common difference is 7
Since the common difference is 7
a_n = 12+(n-1)7
a_n = 12+7n -7
a_n = 5+7n
3 octavos de una caja contiene 18 galletas, cuantas galletas contiene una caja?
Answer:
Step-by-step explanation:
Answer:
54
Step-by-step explanation:
Multiplica tres por 18
When fractions have the same denominator, their _____ also has the same denominator.
For this case we have to, by definition:
The sum of fractions with the same denominator consists of adding the numerators and placing the same denominator.
For example:
[tex]\frac {a} {b} + \frac {c} {b} = \frac {a + c} {b}[/tex]
So:
When fractions have the same denominator, their sum also has the same denominator.
Answer:
When fractions have the same denominator, their sum also has the same denominator.
Please help solve
Math again
Answer:
The answer is A and b=18.
Step-by-step explanation:
27=b+9 and then subtract 9 from each side to get b=18
four big water bottles can hold 8 gallons of water. How much water can ten big water bottles hold?
Answer:
20 gallons
Step-by-step explanation:
you would have to divide 4 and 8 which equals 2
then you multiply 2 by 10
which equals 20
Answer:
10 big water bottles hold 20 gallons of water
Step-by-step explanation:
Simplify the equation given. Divide 4 from both the numerator and denominator
(4 big water bottles/8 gallons of water) = (1 big water bottle/ 2 gallons of water)
Next, solve for 10 big water bottles. Multiply 10/10 to the fraction gotten previously
(1 big water bottle / 2 gallons of water) x (10/10) = (10 big water bottle / 20 gallons of water).
10 big water bottles / 20 gallons of water is your answer
~
Find the values for "a" and "b" that would make the equality true. 7(ay^2+by−3)=14y^2−7y−21
Answer:
a = 2 and b = - 1
Step-by-step explanation:
distribute the left side of the equation and compare the like terms with terms on the right side
7ay² + 7by - 21
compare the coefficients of like terms with 14y² - 7y - 21
7a = 14 ⇒ a = 2
7b = - 7 ⇒ b = - 1
The value of a and b from the given equation is 2 and -1 respectively;
Given the equation [tex]7(ay^2+by-3)=14y^2-7y-21[/tex]
In order to get the value of a and b that will make the equality equation true, we will have to factorize first;
[tex]7(ay^2+by-3)=14y^2-7y-21\\7ay^2+7by-21=14y^2-7y-21\\[/tex]
Next is to compare both sides to get the unknown value
[tex]7ay^2=14y^2\\7a=14\\a=\frac{14}{7}\\a =2[/tex]
Get the value of "b"
[tex]7by=-7y\\7b=-7b\\b=\frac{-7}{7}\\b=-1[/tex]
Hence the value of a and b from the given equation is 2 and -1 respectively;
Learn more here: https://brainly.com/question/14341790
If f(x)=x^2 +5 and g(x)=5x+4, what is the [fg](6)
f + g)(x) = f (x) + g(x)
= [3x + 2] + [4 – 5x]
= 3x + 2 + 4 – 5x
= 3x – 5x + 2 + 4
= –2x + 6
(f – g)(x) = f (x) – g(x)
= [3x + 2] – [4 – 5x]
= 3x + 2 – 4 + 5x
= 3x + 5x + 2 – 4
= 8x – 2
(f × g)(x) = [f (x)][g(x)]
= (3x + 2)(4 – 5x)
= 12x + 8 – 15x2 – 10x
= –15x2 + 2x + 8
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A study was done to investigate the population of a certain species of animal over time. The correlating linear model is shown below, where x represents the number of years after 1955, and y represents the number of that certain species. Interpret the y-intercept.
y = 5,000 + 500x
A. There were 1,000 of that species in 1955.
B. There were 10,000 of that species in 1955.
C. There were 500 of that species in 1955.
D. There were 5,000 of that species in 1955.
Answer: D
Step-by-step explanation:
5,000 + 500x = 5,500x
Answer:
D. There were 5,000 of that species in 1955.
Step-by-step explanation:
The initial population of the species is equal to the y-intercept of the first-order polynomial. Hence, the right answer is D.
Keisha and her friends visit the concession stand at the basketball game. The stand charges $2 for a hotdog and $1 for a drink. The friends buy a total of 8 items for $11. How many hot dogs and how many drinks did they buy? Show your work and explain your reasoning. (please help, for math homework)
Answer:
They bought 3 hot dogs and 5 drinks
Step-by-step explanation:
Well, its mostly guess and check.
x=hot dogs y= drinks x+y=8
2x + 1y =11
2(1) + 1(7) = 9 (wrong answer)
2(2) + 1(6)= 10 (wrong answer)
2(3) + 1(5) = 11 (right answer)
The reason I pick these numbers is because the x and the y need to add up to 8 and as you can see on each try they added up to 8 but it also had the equation itself had to add up to $11. So, you substitute the numbers that add up to 8 to x and y to make sure the equation equals 11.
Final answer:
Keisha and her friends purchased 3 hotdogs and 5 drinks at the concession stand. This was determined by setting up a system of equations based on the given costs for items and the total amount spent and solving for the variables representing hotdogs and drinks.
Explanation:
To solve Keisha's concession stand problem, we need to use a system of equations. Let's define two variables: x for hotdogs and y for drinks. According to the problem, the friends bought a total of 8 items for $11. The price is $2 per hotdog and $1 per drink. We can set up the following equations:
1) x + y = 8 (for the total number of items)
2) 2x + y = 11 (for the total cost)
Solving the system, we can subtract the first equation from the second to find the number of hotdogs:
2x + y - (x + y) = 11 - 8
x = 3
Now, we substitute x back into the first equation to find y:
3 + y = 8
y = 5
Therefore, Keisha and her friends bought 3 hotdogs and 5 drinks.
At the grocery store, 5 pints of ice cream cost $7.20. How much would 20 pints of ice cream cost?
Which measurement is the most precise? A) 29 cm B) 28.8 cm C) 28.76 cm D) 28.762 cm
Answer:
A
Step-by-step explanation:
In a certain Algebra 2 class of 29 students, 5 of them play basketball and 16 of them play baseball. There are 10 students who play neither sport. What is the probability that a student chosen randomly from the class plays both basketball and baseball?
Toby found a $52 wallet on the clearance rack for 60% off. If sales tax is 6.25%, how much will he pay in total?
Toby has to pay 22.1$ in total for the wallet.
What is percentage?A value or ratio that may be stated as a fraction of 100 is referred to as a percentage in mathematics. If we need to compute a percentage of a number, we should divide it by its whole and then multiply it by 100. The proportion, therefore, refers to a component per hundred. Per 100 is what the term percent signifies. The letter "%" stands for it.
Given that, Toby found a $52 wallet on the clearance rack for 60% off.
So.
The price of wallet after discount = 52 * (1 - 60%)
The price of the wallet after the discount = 52*0.4
The price of the wallet after the discount = 20.8
Since there is a sales tax of 6.25%
Thus the purchasing Price of the wallet = 20.8(1 + 6.25%)
the purchasing Price of the wallet = 22.1
therefore, If the sales tax is 6.25%, he will pay $22.1 in total.
Learn more about percentages here:
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a milkyway bar is 5 inches long. The bar will be split into two pieces. For each situation find the length in inches of the two pieces and write your answer as the ratio of the larger piece to the smaller piece. Show your work
A) one piece is 1 inch longer than the other?
B) one piece is 60% of the bar
HELPPPPPPPP ASAP
Answer:
A)one is 3 inches and the other is 2 inches.2:5 and 3:5
B)It would be still b three and two because 3/5 of the chocolate bar is 60% and 2/5 is 40%.
Step-by-step explanation:
A) If the bar is 5 inches long and it is broken into two pieces with one that measures an inch longer then you would find that if broken in half it would be 2.5, so if you take the other point 0.5 off of the other 2.5 and add it to the other half then it would have on piece that is an inch longer than the other piece.3+2=5
B) 5(0.6) =3
For Scenario A, the Milky Way bar is divided into two pieces where one piece is 1 inch longer than the other, resulting in lengths of 3 inches and 2 inches, with a ratio of 3:2. In Scenario B, one piece is 60% of the entire bar, equating to 3 inches and 2 inches for the two pieces, again with a ratio of 3:2.
A Milky Way bar is 5 inches long and is split into two pieces.
Scenario A: One Piece Is 1 Inch Longer Than the Other
Let's denote the length of the shorter piece as x. According to the problem, the longer piece would then be x + 1 inch. Since the two pieces together must add up to the total length of the bar, which is 5 inches, we can set up the following equation:
x + (x + 1) = 5 inches
2x + 1 = 5 inches
2x = 5 inches - 1 inch
2x = 4 inches
x = 2 inches
The shorter piece is 2 inches, meaning the longer piece is 2 inches + 1 inch = 3 inches.
The ratio of the longer piece to the shorter piece is therefore 3:2.
Scenario B: One Piece Is 60% of the Bar
In this case, one piece is 60% of 5 inches. We calculate this piece as follows:
60% of 5 inches = 0.60 * 5 inches
= 3 inches
Since one piece is 3 inches, the other piece must be 5 inches minus 3 inches, which is 2 inches. The ratio of the larger piece to the smaller piece is 3:2, the same as in Scenario A.
What are all the subsets of the set?
{-8,4}
A. Ø, {-8}, {4}
B. {-8}, {4}, {-8, 4}
C. {-8}, {4}
D. Ø, {-8}, {4}, {-8, 4}
The correct answer is D, which includes the empty set, each individual element as a subset, and the set itself containing both elements {-8, 4}.
Explanation:The question asks for all subsets of the set {-8, 4}. A subset of a set includes any set formed from its elements, including the empty set and the set itself. Therefore, the subsets of the set {-8, 4} are:
The empty set:So the correct answer is D: Ø, {-8}, {4}, {-8, 4}.
what is the shortest driving distance from the hospital to the gas station?
Answer:
I'm sorry i couldn't understand your question. If you wanna take it litterally, around the world there is gas station that could be 5 minutes, 15 or 30 minute from a hospital. could you clarify me on your question
max's lunch account is less than $8.does max owe more than or less than $8?
find the value of x. please explain your answer:)
Answer:
x =16
Step-by-step explanation:
A right angle has 90 degrees.
The two given angles add to 90 degrees
3x + 2 + 40 = 90 Combine the left side
3x + 42 = 90 Subtract 42 from both sides
3x + 42 - 42 = 90 - 42 combine
3x = 48 Divide by 3
3x/3 = 48/3 Do the division
x = 16
What’s the slope between (19,3) and (20,3)
What does The difference of two numbers by 5 look like
Answer:
Step-by-step explanation:
Let the larger number = x
Let the smaller number = y
I can't really tell if I'm reading it correctly, but I think the answer is
x - y = 5
Answer:
Step-by-step explanation:
Suppose you have given two numbers say (x and y ).
Now we can have 3 conditions here:
i . x and y are equal
ii. x is greater than y
iii . y is greater than x .
For x and y are equal : - Difference between two numbers will be zero.
For x and y greater or lesser :- There will be some difference between two numbers x and y. And if this difference between x and y is 5, then it will look like:
x is greater than y
x - y = 5
or
y is greater than x
y - x = 5
5Y+2-3(4Y)=0
WHAT DOES THIS EQUAL
Answer: The Y in the problem = 2/7, Good Luck!
Step-by-step explanation:
Simplify both sides of the equation!
Answer:
the answer would be one
Step-by-step explanation:
you simply have to put the question in parts that makes it easy use PEMDAS
it is really helpful on math that looks like this
Which property yields step 2 in the following problem? Step 1: 12(x+4) Step 2: 12x + 48
Answer:
Distributive property
Step-by-step explanation:
12(x+4)
We would use the Distributive property to get to
12x+48
Distributive Property
x(a+b) = ax + bx
I need help with part c). Given that tan(pi/8)= sqrt(2)-1. Please provide a detailed answer.
[tex]b)\\\tan x=\dfrac{\sin x}{c\os x}\\\\\tan^2x=\dfrac{\sin^2x}{\cos^2x}=\dfrac{2\sin^2x}{2\cos^2x}=\dfrac{\sin^2x+\sin^2x}{\cos^2x+\cos^2x}\\\\=\dfrac{\sin^2x+\sin^2x+\cos^2x-\cos^2x}{\cos^2x+\cos^2x+\sin^2x-\sin^2x}=\dfrac{(\sin^2x+\cos^2x)-(\cos^2x-\sin^2x)}{(\cos^2x+\sin^2x)+(\cos^2x-\sin^2x)}\\\\=\dfrac{1-\cos2x}{1+\cos2x}\\\\\text{Used}:\\\\\sin^2x+\cos^2x=1\\\\\cos^2x-\sin^2x=\cos2x[/tex]
[tex]\tan^2\left(\dfrac{7\pi}{8}\right)=\dfrac{1-\cos\left(2\cdot\dfrac{7\pi}{8}\right)}{1+\cos\left(2\cdot\dfrac{7\pi}{8}\right)}=\dfrac{1-\cos\left(\dfrac{7\pi}{4}\right)}{1+\cos\left(\dfrac{7\pi}{4}\right)}=(*)\\\\\cos\left(\dfrac{7\pi}{4}\right)=\cos\left(2\pi-\dfrac{\pi}{4}\right)=\cos\left(-\dfrac{\pi}{4}\right)=\cos\left(\dfrac{\pi}{4}\right)=\dfrac{\sqrt2}{2}\\\\(*)=\dfrac{1-\frac{\sqrt2}{2}}{1+\frac{\sqrt2}{2}}=\left(\dfrac{2}{2}-\dfrac{\sqrt2}{2}\right):\left(\dfrac{2}{2}+\dfrac{\sqrt2}{2}\right)[/tex]
[tex]=\dfrac{2-\sqrt2}{2}\div\dfrac{2+\sqrt2}{2}=\dfrac{2-\sqrt2}{2}\cdot\dfrac{2}{2+\sqrt2}=\dfrac{2-\sqrt2}{2+\sqrt2}\\\\\text{Use}\ (a+b)(a-b)=a^2-b^2\\\\=\dfrac{2-\sqrt2}{2+\sqrt2}\cdot\dfrac{2-\sqrt2}{2-\sqrt2}=\dfrac{(2-\sqrt2)^2}{2^2-(\sqrt2)^2}\\\\\text{Use}\ (a-b)^2=a^2-2ab+b^2\\\\=\dfrac{2^2-2(2)(\sqrt2)+(\sqrt2)^2}{4-2}=\dfrac{4-4\sqrt2+2}{2}=2-2\sqrt2+1\\\\=(\sqrt2)^2-2(\sqrt2)(1)+1^2=1^2-2(1)(\sqrt2)+(\sqrt2)^2\\\\\text{Use}\ (a-b)^2=a^2-2ab+b^2\\\\=(1-\sqrt2)^2\\\\\text{Therefore}:[/tex]
[tex]\tan^2\left(\dfrac{7\pi}{8}\right)=(1-\sqrt2)^2\to\boxed{\tan\left(\dfrac{7\pi}{8}\right)=1-\sqrt2}[/tex]
[tex]c)\\\tan\left(\dfrac{\pi}{8}\right)=\tan\left(\pi-\dfrac{7\pi}{8}\right)=\tan\left(-\dfrac{7\pi}{8}\right)=-\tan\left(\dfrac{7\pi}{8}\right)\\\\=-(1-\sqrt2)=\sqrt2-1\\\\y=\sin(2x-1)+a\tan\dfrac{\pi}{8}\\\\\text{We know}\ -1\leq\sin(2x-1)\leq1.\\\\y\geq0\ \text{therefore}\ a\tan\dfrac{\pi}{8}\geq1\\\\\text{We have to move the graph at least one unit up}\\\\a(\sqrt2-1)\geq1\qquad\text{divide both sides by}\ (\sqrt2-1)>0\\\\a\geq\dfrac{1}{\sqrt2-1}\cdot\dfrac{\sqrt2+1}{\sqrt2+1}\\\\a\geq\dfrac{\sqrt2+1}{(\sqrt2)^2-1^2}[/tex]
[tex]a\geq\dfrac{\sqrt2+1}{2-1}\\\\a\geq\dfrac{\sqrt2+1}{1}\\\\a\geq\sqrt2+1\\\\Answer:\ \boxed{a=\sqrt2+1}[/tex]
Raj ordered 3 large pizzas for a party. At the end of the party, some of each pizza was left, as shown below.
If all the pieces are put together, what fraction of one whole pizza is left?
A.1/2
B.3/4
C.5/8
D.9/16
What is the sum of these two mixed numbers, expressed in lowest terms?
A.5 3/4 B.
5 3/10
C.4 2/3
D.4 3/10
There are 5 cups of goldfish on the counter. Each student receives 1/6 of a cup of goldfish. How many students can be fed with the 5 cups of goldfish?
Answer:
The only one I can do is the last one. 30 students.
Step-by-step explanation:
5 / (1/6)
30
Provided:
- Alex purchased 1 adult ticket and 2 student tickets for a total of $22.
- Jen purchased 1 adult ticket and 3 student tickets for a total of $28.
What is the price of a student ticket?
A. $6.00 B. $8.00
C. $10.00 D.$12.00
Which graph is a solution set to the opening sentence? 10< -2b or 2b+3>11
[tex]10 < -2b\qquad\text{change the signs}\\\\-10>2b\qquad\text{divide both sides by 2}\\\\-5>b\to \boxed{b<-5}\\\\2b+3>11\qquad\text{subtract 3 from both sides}\\\\2b>8\qquad\text{divide both sides by 2}\\\\\boxed{b>4}[/tex]
The second graph.