Answer:
Not proportional.Step-by-step explanation:
Work:
4:9::11/6=> 4 x 6 = 9 x 11=> 24 ≠ 99This proves that this ratio is not proportional.
random variables, probability distributions and expected value Alyssa likes to play roulette, but she doesn't like the low probability of betting on a single number. Therefore, she bets on a block of 4 numbers, increasing her probability of winning to 38. She generally places a $5 chip on her block of 4. If any other number comes up she loses her bet, but if one of her 4 numbers come up, she wins $40 (and gets to keep her bet!). What is the expected value for Alyssa playing roulette? Round to the nearest cent. Do not round until your final calculation.
We have to calculate the expected value for Alyssa playing roulette.
The expected value is calculated as the weighted sum of all the possible the outcomes, weighted by the probabilities of occurrence of this outcomes.
Then, we start by listing all the outcomes:
1) One of the numbers of the block comes up.
This will happen with a probability of 4 out of 38 (P=4/38). NOTE: The total numbers of the roulette are 38.
The net prize, that is excluding the $5 she bets, is $40.
2) None of the numbers of the block comes up.
That will happen with probability 34 out of 38 (P=34/38).
The net prize, as she will lose the $5 she bets, is -$5.
The expected value can be calculated as:
\(E=\sum ^2_{i=1}p_i\cdot X_i=\frac{4}{38}\cdot40+\frac{34}{38}\cdot(-5)=\frac{160}{38}-\frac{170}{38}=\frac{-10}{38}\approx-0.26\)The expected value for Alyssa is -$0.26.
ZA and ZB are complementary angles. Ifm A = (2.c +18) and m
ZB = (6x + 8), then find the measure of B.
Answer:
Step-by-step explanation:
The sum of complementary angles is 90°.
(2x+18) + (6x+8) = 90
8x+26 = 90
x = 8°
B = 6x+8° = 56°
Select a personal or professional example of a measurement you use routinely. Convert the measurement either from U.S customary units to metric units, or from metric units to U.S. customary units. You may choose more than one measurement and may choose among weight, length, temperature, etc. Show each step of your conversion and be sure to include all units from the original and converted measurements (for example, yards to meters, degrees Celsius to degrees Fahrenheit).
A personal example of a measurement I use routinely is converting weight from U.S. customary units to metric units. Let's convert pounds to kilograms.
To convert pounds to kilograms, we use the conversion factor of 1 pound = 0.453592 kilograms.
For example, if I have a weight of 150 pounds, I can calculate the equivalent weight in kilograms as follows:
150 pounds * 0.453592 kilograms/pound = 68.0388 kilograms
Therefore, 150 pounds is approximately equal to 68.0388 kilograms.
In this conversion, we multiply the weight in pounds by the conversion factor to obtain the weight in kilograms. By using the appropriate conversion factor, we can accurately convert weights from U.S. customary units to metric units.
It's important to note that conversion factors may vary slightly depending on the rounding used and the exact value of the conversion factor.
For such more question on metric units
https://brainly.com/question/30951620
#SPJ8
Need Help!!!! A pre-image has coordinates J(3, -6) and K(-1, -2). The image has coordinates J'(6, 3) and K'(2, -1). Describe the clockwise rotational path of the line segment.
After considering the given data we conclude that the clockwise rotational path of the line segment is a rotation of -59.04 degrees about the point (-6, -1).
We have to evaluate the center and angle of rotation to explain the clockwise rotation of the line segment.
So in the first step, we can evaluate the midpoint of the line segment JK and the midpoint of the line segment J'K'. we can calculate the vector connecting the midpoint of JK to the midpoint of J'K'. This vector is (4-1, 1-(-4) = (3,5)
The center of rotation is the point that is equidistant from the midpoints of JK and J'K'. We can evaluate this point by finding the perpendicular bisector of the line segment connecting the midpoints.
The slope of this line is the negative reciprocal of the slope of the vector we just found, which is -3/5. We can apply the midpoint formula and the point-slope formula to evaluate the equation of the perpendicular bisector:
Midpoint of JK: (1, -4)
Midpoint of J'K': (4, 1)
The slope of the vector: 3/5
(x₁ + x₂)/2, (y₁ + y₂) /2
Point-slope formula: y - y₁ = m(x - x₁)
Perpendicular bisector: y - (-4) = (- 3/5)(x - 1)
Applying simplification , we get: y = (- 3/5)x - 1.2
To evaluate the center of rotation, we need to find the intersection point of the perpendicular bisector and the line passing through the midpoints of JK and J'K'. This line has slope ( 3 - (4)) /(4 - 1) = 7/3 and passes through the point (4, 1). Applying the point-slope formula, we can evaluate its equation:
y - 1 = (7/3)( x - 4)
Apply simplification , we get: y = (7/3)x - 17/3
To evaluate the intersection point, we can solve the system of equations:
y =(- 3/5)x - 1.2 = (7/3)x - 17/3
Evaluating for x and y, we get x = -6 and y = -1.
Therefore, the center of rotation is (-6, -1).
√( 4 - 1)² + ( 1 - ( - 4))²) = 5√(2)
Distance between image points and center of rotation
√( ( 6 - (-6))² + ( 3 - (-1))² = 13
The ratio of these distances gives us the scale factor of the transformation, which is 13/√2).
The angle of rotation is negative as the image moves clockwise direction. We can apply the inverse tangent function to find the angle of the vector connecting the midpoint of JK to the midpoint of J'K':
Angle of vector: arctan(5/3) = 59.04 degrees
Therefore, the clockwise rotational path of the line segment is a rotation of -59.04 degrees about the point (-6, -1).
To learn more about midpoint formula
https://brainly.com/question/30276996
#SPJ1
Solve, using the substitution method
j+k=3
j-k=7
Answer:
k = -2
j = 5
General Formulas and Concepts:
Pre-Algebra
Order of Operations: BPEMDAS
Brackets Parenthesis Exponents Multiplication Division Addition Subtraction Left to RightEquality Properties
Multiplication Property of Equality Division Property of Equality Addition Property of Equality Subtraction Property of EqualityAlgebra I
Terms/CoefficientsSolving systems of equations using substitution/eliminationStep-by-step explanation:
Step 1: Define Systems
j + k = 3
j - k = 7
Step 2: Rewrite Systems
j - k = 7
[Addition Property of Equality] Add k on both sides: j = 7 + kStep 3: Redefine Systems
j + k = 3
j = 7 + k
Step 4: Solve for k
Substitution
Substitute in j [1st Equation]: 7 + k + k = 3[Addition] Combine like terms: 7 + 2k = 3[Subtraction Property of Equality] Subtract 7 on both sides: 2k = -4[Division Property of Equality] Divide 2 on both sides: k = -2Step 5: Solve for k
Substitute in k [1st Equation]: j - 2 = 3[Addition Property of Equality] Add 2 on both sides: j = 5Maria bought 19 pounds of flour for nine dollars how many pounds of flour did she get per dollar
Divide money by pounds,
9/19
Price per pound of flour
$0.473
Answer:
cacluate it 19×9= ? hope thid helpeddddd
5/6 of a number is 30
Step-by-step explanation:
5/6 x y = 30
5/6y=30
6 x 5/6y= 6 x 30
5y=180
5y/5=180/5
y=36
A boy walks 5km due north and then 4km due east. Find the bearing of his current position from the starting point, how far is the boy now from the starting point
(easy math question please help) find the value of x question #9
Answer:
Step-by-step explanation:
25+125+(-5x)=180 degree(sum of interior angles of a triangle is 180 degree)
150-5x=180
-5x=180-150
x=30/-5
x=-6
Latrina is planning to serve hors d'oeuvres at her wedding. She plans on offering 8 hors d'oeuvres for every 3 people
Latrina will serve 640 hors d’oeuvres to the 240 people at her wedding .
In the question ,
it is given that
At Latrina's wedding
number of hors d’oeuvres offering that 3 people will get = 8 offering
So, the number of offering of hors d’oeuvres that 1 person will get = 8/3 .
we need to find that
how many hors d’oeuvres will she serve for 240 people .
So ,
the number of hors d’oeuvres offering that 240 people will get =(8/3)×240
= 8 × 80
= 640
Therefore , Latrina will serve 640 hors d’oeuvres to the 240 people at her wedding .
The given question is incomplete , the complete question is
Latrina is planning to serve hors d’oeuvres at her wedding. She plans on offering 8 hors d’oeuvres for every 3 people. If she has invited 240 people to the wedding, how many hors d’oeuvres will she serve?
Learn more about Multiplication here
https://brainly.com/question/660389
#SPJ1
Solve seven square root three plus two square root nine and explain whether the answer is rational or irrational
Answer:
Step-by-step explanation:
5
This student incorrectly simplified this expression.
−12m+3+5m
Step 1: −7m + 3
Step 2: −4m
Identify the student's error.
Explain what they did wrong.
Answer:
/
dont subtract 3 from -7m so it would be -7m + 3
7m
/
= m = 3
1. You pay $10 to play the following game of chance. There is a bag containing 12 balls, five are red, three are
green and the rest are yellow. You are to draw one ball from the bag. You will win $14 if you draw a red ball and
you will win $12 is you draw a yellow ball. How much do you expect to win or loss if you play this game 100
times?
O a
-2.40
Ob -1.67
Oc -16.67
Od -24.00
Answer:
Step-by-step explanation:
What is the median of 6, 7, 10, 12, 15? 12 10 9.6
Answer:
10
Step-by-step explanation:
it is the middle value after you have put the numbers in numerical order
what are ratios are equivalent to 2:9
Answer:
4:18 8:36 1:4.5
Step-by-step explanation:
Answer:
4:18, 6:27, 8:36, 10:45, 12:54, etc.
Step-by-step explanation:
The side of a triangle are in the ratio 4:4:3 what kind of triangle is it (b) calculate the smallest angle of the triangle to the nearest degree
The smallest angle of the equilateral triangle is 60 degrees
If the sides of a triangle are in the ratio 4:4:3, it implies that the lengths of the sides are proportional.
To determine the type of triangle, we examine the side lengths. Since all three sides are equal in length, we have an equilateral triangle.
For an equilateral triangle, all angles are equal. To calculate the smallest angle, we divide the total sum of angles in a triangle (180 degrees) by the number of angles, which is 3:
Smallest angle \(= \frac{180}{3} = 60\)\) degrees.
Therefore, the smallest angle of the equilateral triangle is 60 degrees (to the nearest degree).
For more questions on equilateral triangle:
https://brainly.com/question/17264112
#SPJ8
On a calculator display, some years look the same upside down as right side up. What is the first such year in the 21st century?
Answer:
The first such year is 2002.
Step-by-step explanation:
For them to be the same upside down as right side up, the first and last digit have to be the same.
Since we are in the 21st century, and the years begin with 2, then have to end with 2. So
2xx2.
Numbers that look the same upside down as right side up are: 0,1,2,5,8. So, the first possible year is:
2002
Find the value of (f o g)' at the given value.
To find the value of (f o g)' at a given value, you first need to understand the concept of composite functions and the chain rule of differentiation. Let's break it down step by step.
To find the value of (f o g)' at a given value, you need to evaluate g(x) and f(x), find their derivatives, and use the chain rule to find the derivative of (f o g) at the given value. It is important to understand the concepts of composite functions and the chain rule to be able to solve problems involving these concepts.
What are composite functions? Composite functions are functions that are formed by composing two or more functions. The notation used to denote composite functions is (f o g)(x), which means that the output of function g is used as the input for function f. In other words, we first evaluate g(x), and then use the result as the input for f(x).
What is the chain rule of differentiation? The chain rule of differentiation is a method used to find the derivative of composite functions. It states that if a function is composed of two or more functions, then its derivative can be found by taking the derivative of the outer function and multiplying it by the derivative of the inner function.
To find the value of (f o g)' at a given value, we need to follow these steps:1. Find g(x) and f(x)2. Find g'(x) and f'(x)3. Evaluate g(x) at the given value4. Use the chain rule to find (f o g)' at the given value
step 1: Find g(x) and f(x)Let's say that we have two functions: g(x) = x^2 + 3x + 1 and f(x) = sqrt(x). To find (f o g)(x), we first need to evaluate g(x) and then use the result as the input for f(x). Therefore, (f o g)(x) = f(g(x)) = sqrt(x^2 + 3x + 1)
Step 2: Find g'(x) and f'(x)To find g'(x), we need to take the derivative of g(x) using the power rule and the sum rule. Therefore, g'(x) = 2x + 3To find f'(x), we need to take the derivative of f(x) using the power rule and the chain rule. Therefore, f'(x) = 1/2(x)^(-1/2)
Step 3: Evaluate g(x) at the given valueSuppose we want to find (f o g)' at x = 2. To do this, we need to first evaluate g(x) at x = 2. Therefore, g(2) = 2^2 + 3(2) + 1 = 11
Step 4: Use the chain rule to find (f o g)' at the given value now we can use the chain rule to find (f o g)' at x = 2. Therefore, (f o g)'(2) = f'(g(2)) * g'(2) = 1/2(11)^(-1/2) * (2)(3) = 3/sqrt(11)
For more such questions on composite
https://brainly.com/question/24820928
#SPJ8
What is the product of (x² + x + 2) and (x² − 2x + 3)
Answer:
\(x^4-x^3+3x^2-x+6\)
Step-by-step explanation:
Multiply each term in the first equation by all the terms in the second and add them together.
Hurry - Fill in the blanks
Answer:
The first value of a relation is an input value and the second value is the output value. A function is a specific type of relation in which each input value has one and only one output value.
An input is an independent value, and the output value is the dependent value, as it depends on the value of the input.
Find the slope of the given line. Please see attached photo. Thank you
Answer:
-2
Step-by-step explanation:
Find two points which lie on the line :
Take (-2, -1) and (-1, -3)Formula for slope (m) :
m = y₂ - y₁ / x₂ - x₁m = -3 + 1 / -1 + 2m = -2/1m = -2Answer: \(-2\)
Step-by-step explanation:
\(Slope:m=0\)
\(y=mx+b\)
\(-2*10^0\)
\(-2~is~a~rational~number\)
\(\frac{180}{pi}\)°
Tickets for a dance recital cost $12 for adults and $8 for children. The dance company sold
257 tickets, and the total receipts were $2,576. How many adult tickets and how many child
tickets were sold? Set up a system of equations, state both variables, and solve. Write your
answer in a complete sentence and make sure to write the units.
Answer:
Step-by-step explanation:
a + c = 257
12a + 8c = 2576
-12a - 12c = -3084
12a + 8c = 2576
-4c = -508
c = 127 children tickets
a + 127 = 257
a = 130 adult tickets
In recent years, Sheffield Transportation purchased three used buses. Because of the frequent turnover in the accounting department, a different accountant was in charge of selecting the depreciation method for each bus, and various methods have been used. Information concerning the buses is summarized in the table below. Bus 1, Bus 2, Bus 3, For the declining-balance method, the company uses the declining method rate. For units-of-activity method, total miles are expected to be 125,000. Actual miles of use in the first 3 years were 2021, 27,000; 2022, 35,000; and 2023, 33,000.
(a1) For Bus #3, calculate depreciation expense per mile under units-of-activity method.
Under the units-of-activity method, the depreciation expense per mile for Bus #3 is $0.4616.
How is the depreciation expense per mile determined?The units-of-activity method is one of the depreciation methods in use.
Under the units-of-activity method, the depreciation expense per unit is determined by dividing the depreciable amount by the total units of activity.
The depreciation amount (the value of the asset subject to depreciation) is the net of the total cost less the salvage value.
Depreciable amount of Bus #3 = $57,700 ($66,500 - $8,800)
Expected total miles for Bus #3 = 125,000
Depreciation expense per mile for Bus #3 = $0.4616 ($57,700 ÷ 125,000)
Learn more about determining the depreciation expense per unit at https://brainly.com/question/22077069.
#SPJ1
Question Completion:Bus Acquired Cost Salvage Useful Life Depreciation
Value in Years Method
1 1/1/12 $99,100 $7,900 4 Straight-line
2 1/1/12 128,000 11,000 4 Declining- balance
3 1/1/13 66,350 8,800 5 Unit-of-activity
Please look at the photo. Thank you!
The value of f(5) is positive
At f(x) = 0, the value of x is 1
For the interval f(x) ≤ 0, the values of x are [-2, 1]
How to determine the values of the functionFrom the question, we have the following parameters that can be used in our computation:
The graph
On the graph, we have
f(5) = 1
This means that f(5) is positive
Also, we have
When f(x) = 0, the value of x is 1
For the interval f(x) ≤ 0, we have the values of x to be
-2 ≤ x ≤ 1
When represented as an interval, we have
[-2, 1]
Read more about functions at
https://brainly.com/question/27915724
#SPJ1
For which pair of triangles could the Angle-Side-Angle Postulate (ASA) be used to prove that △ABC≅△XYZ ? I only have an hour pls help.
The pair that support Angle-Side-Angle Postulate (ASA) be used to prove that △ABC≅△XYZ is option B
What are congruent triangles?Triangles are said to be congruent when the sides and angles equal in accordance to to the triangle congruency rules
examples of these rules are
Angle - Side - Angle = ASASide - Side - Side = SSSSide - Angle - Side = SASAngle - Angle - Side = AASHypotenuse and one leg = HLThe problem requires the prove by Angle - Side- Angle = ASA to ensure that the the triangles are congruent
The Angle - Side - Angle = ASA have it that the two triangles being compared should have their two angles and the included side being equal
Learn more about congruent triangles here:
https://brainly.com/question/29393764
#SPJ1
Mr. Harry had 4 daughters, each daughter had a brother. How many Children does Mr. Harry have?
Answer:
Mr. Harry has 5 children.... I know what you were going for...
10+ points if you answer correctly
Answer:
\(\sqrt[9]{3}\)
Step-by-step explanation:
The screenshot is proof that it’s the correct answer, because I used a calculator.
Chose the definition for the function
By using studying graph of function, the correct option is the fourth option
What is a function
A function from A to B is a rule that assigns to each element of A a unique element of B. A is called the domain of the function and B is called the codomain of the function.
There are different operations on functions like addition, subtraction, multiplication, division and composition of functions.
Here,
For x \(\geq\) 1, (Solid dot is given, so equality is maintained here),
At x = 1, y = -1.
This happens for the function y = -2x + 1
So for x \(\geq\) 1, the function is y = -2x + 1
Now for x < 1, (Hollow dot is given, so the equality will not be maintained here ),
At x = 1, y = 1
This happens for y = -x + 2
So for x < 1, the function is y = -x + 2
So the function is
y = -2x + 1, x \(\geq\) 1,
y = -x + 2, x < 1
Fourth option is correct
To learn more about function, refer to the link:
https://brainly.com/question/22340031
#SPJ13
Which expression is equivalent to (m-²n-3)-4?
The equivalent expression to the expression (m-²n-3)-4 is (m-²n- 7).
What is an expression?Expression in maths is defined as the collection of numbers variables and functions by using signs like addition, subtraction, multiplication, and division.
Numbers (constants), variables, operations, functions, brackets, punctuation, and grouping can all be represented by mathematical symbols, which can also be used to indicate the logical syntax's order of operations and other features.
The given expression is (m -² n - 3) - 4. The expression will be solved as below,
E = (m -² n - 3) - 4
E = (m -² n - 3 - 4 )
E = (m -² n - 7
To know more about an expression follow
https://brainly.com/question/29238392
#SPJ1
Please help faster please