Answer: Let's start by setting up equations to represent the total cost for each class. Let x be the number of rolls each class buys.
For the freshmen: total cost = $51 + $41x
For the sophomores: total cost = $115 + $40x
Since the two floats will have the same total cost in the end, we can set these two equations equal to each other and solve for x:
$51 + $41x = $115 + $40x
$x = 64
So each class will be buying 64 rolls of their respective materials. Now we can plug this value of x back into either equation to find the total cost for each class:
Freshmen: $51 + $41(64) = $2692
Sophomores: $115 + $40(64) = $2595
Therefore, each class will spend $2692 and will be buying 64 rolls.
Step-by-step explanation:
Which equation represents the total number of black and white squares on the chess board?
The equation that represents the total number of black and white squares on the chess board is 8 * 2² = 32
How to determine the equation of the black and white squaresFrom the question, we have the following parameters that can be used in our computation:
The chess board
From the chess board, we have
Black squares = 32
White squares = 32
When factorized, we have
Black squares = 32 = 8 * 2²
White squared = 32 = 8 * 2²
Hence, the equation that represents the squares on the chess board is 8 * 2² = 32
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I’m stuck on this question
Answer:
312
Step-by-step explanation:
Add the area of each face together
Don't forget the units!
Step-by-step explanation:To find the surface aria, you use the 3 numbers to find the aria of each surface, then add up all the numbers you found.
Let's start by finding the right face (12 by 3). From your picture, we can tell its 12m long, and 3m tall. To find the aria of any face, we multiply the length, times the width.
12 x 3 = 36.
Now let's look at where it says 8m. Since that face is just as tall as the first one, we can tell its 3m tall.
8 x 3 = 24.
We can continue this for the top face.
Since the width of the second face we did is 8m, and the width of the first one is 12m, we can tell that the top one is 8 x 12. (96).
We can do this again for the other 3 sides.
A shortcut i like to take, is to do 3 of the sides, (Like the ones we did) and add them together, then double the sum.
36+24+96=156.
156x2=312.
This shortcut should work, because by adding the aria of half the sides together, we get exactly half the answer.
When doing this, it only works to do 3 different sides. it will not work if you do the same side twice, or a parallel side.
I encourage you to let me know if this method works for you! I hope this helps!
X=Y+Y xy So, x=X-Y/Yy True False
The statement X = Y + Yxy is True.
The equation given is:
X = Y + Yxy
To find x = (X- Y) / Yy we have to substitute the value of x in X = Y + Yxy as
X = Y + Yxy
X = Y + Yy (X-Y) / Yy
To solve for x, we can rearrange the equation as:
X = Y + X - Y
X = X
Thus, the statement is True.
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A college student is taking two courses. The probability she passes the first course is 0.67. The probability she passes the second course is 0.7. The probability she passes at least one of the courses is 0.79. Give your answer to four decimal places. a. What is the probability she passes both courses
Answer:
0.58 = 58% probability she passes both courses
Step-by-step explanation:
We can solve this question treating the probabilities as a Venn set.
I am going to say that:
Event A: She passes the first course.
Event B: She passes the second course.
The probability she passes the first course is 0.67.
This means that \(P(A) = 0.67\)
The probability she passes the second course is 0.7.
This means that \(P(B) = 0.7\)
The probability she passes at least one of the courses is 0.79.
This means that \(P(A \cup B) = 0.79\)
a. What is the probability she passes both courses
This is \(P(A \cap B)\).
We use the following relation:
\(P(A \cup B) = P(A) + P(B) - P(A \cap B)\)
So
\(P(A \cap B) = P(A) + P(B) - P(A \cup B) = 0.67 + 0.7 - 0.79 = 0.58\)
0.58 = 58% probability she passes both courses
State the coordinates of the point after the reflection across each axis.
1. (5,2)
2. (-6, 12)
3. (2,-7)
4. (-4,-2)
5. (0,-2)
Reflect across
the x-axis
Reflect across
the y-axis
Answer:
Step-by-step explanation:
Reflecting a point across the x-axis results in changing the sign of the y-coordinate, but keeping the x-coordinate the same. Reflecting a point across the y-axis results in changing the sign of the x-coordinate, but keeping the y-coordinate the same.
Reflecting (5,2) across the x-axis gives (5,-2), and reflecting it across the y-axis gives (-5,2).
Reflecting (-6,12) across the x-axis gives (-6,-12), and reflecting it across the y-axis gives (6,12).
Reflecting (2,-7) across the x-axis gives (2,7), and reflecting it across the y-axis gives (-2,-7).
Reflecting (-4,-2) across the x-axis gives (-4,2), and reflecting it across the y-axis gives (4,-2).
Reflecting (0,-2) across the x-axis gives (0,2), and reflecting it across the y-axis gives (0,-2).
10. Prime numbers from 1 to 100 are running a restaurant - PRIME SPOT, near a tourist point. On a winter holiday, 1 and the composite numbers up to 100 enter the restaurant for dinner after their picnic at the same point. The dining hall has tables with seating capacity 15 for each. If they occupy tables without leaving any chair free, how many tables are required? If each prime number attender has to serve equal number of customers, how many customers should each one get to serve?
6 tables are required. Each prime number attender should serve 3 customers each.
The prime numbers between 1 and 100 are: 2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37, 41, 43, 47, 53, 59, 61, 67, 71, 73, 79, 83, 89, 97.
All the numbers other than prime numbers are composite numbers.
The composite numbers from 1 to 100 are: 1, 4, 6, 8, 9, 10, 12, 14, 15, 16, 18, 20, 21, 22, 24, 25, 26, 27, 28, 30, 32, 33, 34, 35, 36, 38, 39, 40, 42, 44, 45, 46, 48, 49, 50, 51, 52, 54, 55, 56, 57, 58, 60, 62, 63, 64, 65, 66, 68, 69, 70, 72, 74, 75, 76, 77, 78, 80, 81, 82, 84, 85, 86, 87, 88, 90, 91, 92, 93, 94, 95, 96, 98, 99, 100.
Now, as there are 25 primes and 75 composites in the group that visited the restaurant, we can calculate the number of tables required by dividing the number of people by the seating capacity of each table.
Each table has a seating capacity of 15, so the number of tables required will be: Number of tables = (Number of customers)/(Seating capacity of each table)Number of customers = 25 (the number of primes) + 75 (the number of composites) = 100Number of tables = 100/15 = 6 tables
Therefore, 6 tables are required.
Now, as each prime number attender has to serve an equal number of customers, we need to calculate how many customers each one should serve.
Each prime attender has to serve 75/25 = 3 customers each, as there are 75 composites and 25 primes.
Thus, each prime number attender should serve 3 customers each.
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At the same time of day, a woman who is 78 inches tall casts a 63-inch shadow and her son casts a 21-inch shadow. What is the son's height? *
Answer:
26in
Step-by-step explanation:
The heights of the people in relation to their shadow lengths are proportional.
78in/63in = x/21in
The child's shadow is 1/3 the length of his mom so his height is 1/3 of hers.
78/3 = 26 in
Answer:
The son is 26 inches tall.
Step-by-step explanation:
\(\frac{x}{21} = \frac{78}{63}\)
\(x= \frac{21x78}{63}\)
21x78= 1638
1638÷63=26
Hope this helps
Sorry if I got it wrong!
5/6 = ?/12
Subtract fractions with unlike denominators 5th grade
Answer:
uoyhhgvooihyjug
Step-by-step explanation:
uyfiuyf
Find the equation of a line perpendicular to y=-3x-1 that contains the point (-1,1). Write the equation in slope intercept form.
Answer:
y = \(\frac{1}{3}\)x + 1 \(\frac{1}{3}\)
Step-by-step explanation:
y = -3x - 1
1. Perpendicular line needs the opposite (reciprocal) of the slope.
reciprocal of -3 is -1/3, slope 1/3. y = 1/3x + b
2. Now find the b (y-intercept). 1 = 1/3(-1) + b
1 = -1/3 + b
+ 1/3 +1/3
1 1/3 = b
3. Answer y = \(\frac{1}{3}\)x + 1 \(\frac{1}{3}\)
Based on the supply graph and the demand graph shown above, what is the price at the point of equilibrium?
Hint: Think about the point where they both meet. For example, if you were to place the graphs on top of each other, what would be the point of intersection?
Type the correct number below without the dollar sign.
Based on the supply graph and demand graph shown above, the price at the point of equilibrium is $ 30.
Demand refers to quantity of a commodity that the consumers are willing to, able to purchase at a given price during a given period of time. Supply refers to quantity of a commodity that the producers are willing to, able to offer for sale at a given price during a given period of time.
Demand curve slopes downward due to inverse relationship between price and quantity demanded whereas supply curve slopes upward due to direct relationship between quantity supplied and price. When both demand and supply curve intersect with each other balance is achieved. Intersection point between demand and supply curve is known as equilibrium.
At this point when prices are equal is known as equilibrium price and when quantiy demanded or supplied are equal it is known as equilibrium quantity. When we combine the given graph. Equilibrium is achieved at a point when price is equal to $ 30 and quantity is equal to 20 units.
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Graph the line that represents the linear equation y=-4x+2
The graph for the linear equation y = - 4 x + 2 has been obtained.
We are given a linear equation:
y = - 4 x + 2
We need to graph this linear equation.
We will first find out some points that satisfies this equation.
So, the points are:
x y
- 2 10
- 1 6
0 2
1 - 2
2 - 6
Now plotting these points on the graph, we can obtain the graph of the linear equation.
Therefore, the graph for the linear equation y = - 4 x + 2 has been obtained.
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A student takes the same street from his home to the university every day. There are 3 streetlights along the way, and he has noticed the following Markov dependence. If he sees a green light at an intersection, then 77% of time the next light is also green. However, if he sees a red light, then 77% of time the next light is also red. (Assume the chance of him seeing a yellow light is zero.) If the first light is green, what is the probability that the third light is red
Answer:
0.3542 = 35.42% probability that the third light is red
Step-by-step explanation:
For each light:
If it is green, 77% probability that the next is green.
If it is red, 77% probability that the next is red.
If the first light is green, what is the probability that the third light is red?
These following outcomes are desired, for the second and third lights:
G - R(0.77, then 1 - 0.77 = 0.23 probability)
R - R(0.23, then 0.77 probability).
So the desired probability is:
\(p = 0.77*0.23 + 0.23*0.77 = 0.3542\)
0.3542 = 35.42% probability that the third light is red
Please answer my survey questions about phobias its for my class. It wont take more than 2 minutes. please, ty so much in advance
https://www.questionpro.com/t/AUHANZpdtE
Answer:
i tried but it said "This survey has been moved or deactivated by the survey owner" :(
Solve for q.
-18q+ 18q+ 2q + 14 = 4
q=
Answer:
-18q+18q+2q+14=4Step-by-step explanation:
Data:find "q'
first take 2 as common
solution .
2(-9q+9q+q+7)=4
Now divided 2 by both sides.
2(-9q+9q+q+7) ÷2
=4÷2
-9q+9q+q+7 =2
q+7=2
q=2-7
q=-5 Answer.
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Answer:
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f each bowl of ice cream creates a profit of $0.35, what could be the profit made from the 3/4 of a gallon of ice cream?
Answer:
$4.2Step-by-step explanation:
Full question is:
At an ice cream social, 3/4 of a gallon of ice cream is split into bowls, each containing 1/16 of a gallon of ice cream. How many bowls of ice cream can be made? If each bowl of ice cream creates a profit of $0.35, what could be the profit made from the 3/4 of a gallon of ice cream?SolutionNumber of bowls is:
3/4 ÷ 1/16 = 3/4*16 = 12 bowlsProfit made:
12*$0.35 = $4.2p(x)=5x^4+7x^3-2x^2-3x+c divided by (x+1)
The remainder is 5 + c, which means that the expression P(x) = \(5x^4 + 7x^3 - 2x^2 - 3x + c\) divided by (x + 1) results in a quotient of\(5x^3 + 2x^2 - 4x + 4\) and a remainder of 5 + c.
To divide the polynomial P(x) = \(5x^4 + 7x^3 - 2x^2 - 3x + c\) by the binomial (x + 1), we can use polynomial long division.
Let's set up the long division:
\(5x^3 + 2x^2 - 4x + 4\)
_______________________
x + 1 | \(5x^4 + 7x^3 - 2x^2 - 3x + c\)
We start by dividing the highest degree term of the dividend (5x^4) by the divisor (x + 1), which gives us 5x^3. We then multiply this quotient by the divisor (x + 1) and subtract it from the dividend:
\(5x^3(x + 1)\)
_______________________
x + 1 | \(5x^4 + 7x^3 - 2x^2 - 3x + c\)
- (\(5x^3 + 5x^2)\)
This leaves us with a new polynomial:\(2x^3 - 7x^2 - 3x + c\). We repeat the process by dividing the highest degree term of this polynomial (2x^3) by the divisor (x + 1), resulting in 2x^2. We then multiply this quotient by the divisor and subtract it from the polynomial:
\(5x^3(x + 1) + 2x^2(x + 1)\)
_______________________
x + 1 | \(5x^4 + 7x^3 - 2x^2 - 3x + c\)
-\((5x^3 + 5x^2)\)
_______________________
\(2x^2 - 3x + c\)
We continue this process until we reach the constant term, resulting in the remainder of the division.
At this point, we have:
\(5x^3(x + 1) + 2x^2(x + 1)\)
_______________________
x + 1 | \(5x^4 + 7x^3 - 2x^2 - 3x + c\)
- \((5x^3 + 5x^2)\)
_______________________
\(2x^2 - 3x + c\)
-\((2x^2 + 2x)\)
_______________________
- 5x + c
- (-5x - 5)
_______________________
5 + c
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A family has two cars. The first car has fuel efficiency of 30 miles per gallon of gas and the second has a fuel efficiency of 40 miles per gallon of gas. During one particular week, the two cars went a combined total of 2150 miles, for a total gas consumption of 60 gallons, How many gallons were consumed by each of the two cars that week?
Answer:
the first car has 25 gallons of gases while the second car has 35 gallons of gases
Describe an everyday situation between relations that is not a function.
One example is if a guy studied 8 hours a day and score 75 marks and another studied 8 hours and scored 95 marks.
What are relations and functions?
A function is a relation that states that each input should have only one output (or) a special type of relation (a collection of ordered pairs) that follows a rule, i.e., every X-value should be connected with only one y-value.
The Cartesian product is a subset of it. Alternatively, a collection of points (ordered pairs). In other words, the collection of the ordered pair is defined as the relationship between the two sets, where the ordered pair is generated by the object from each set.
One example of an everyday situation between relations that is not a function is if a guy studied 8 hours a day and score 75 marks and another studied 8 hours and scored 95 marks.
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The Probability distribution table shows the proportion of people living in five different regions of a city. What is the probability that a person chosen at random, who lives in the city, lives in the central or north region.
The probability that a person chosen at random, who lives in the city, lives in the central or north region is 0.56
What is the probability?A probability is a number that reflects the chance or likelihood that a particular event will occur.
Given that, the Probability distribution table shows the proportion of people living in five different regions of a city
Probability = Favourable Outcomes/Total Outcomes
Probability(of selecting a person from central or north region) = 0.44 + 0.12 = 0.56
Hence, probability that a person chosen at random, who lives in the city, lives in the central or north region is 0.56
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what are the importance of statistics in estate management?
3. You get three summer jobs to help you save for college expenses. In your job as a cashier,
you work 20 hours per week and earn $9.50 per hour. Your second and third jobs are at a local
hospital. There, you earn $9.00 per hour as a payroll clerk and $7.00 per hour as an aide. You
always work 10 hours less per week as an aide than you do as a payroll clerk. Your total weekly
salary depends on the number of hours you work at each job.
a. Determine the input and output variables for this situation.
b. Explain how you calculate the total amount earned each week.
c. If x represents the number of hours you work as a payroll clerk, represent the number of
hours you work as an aide in terms of x.
d. Write an equation that describes the total amount you earn each week. Use x to represent
the input variable and y to represent the output variable. Simplify the expression as much
as possible.
e. If you work 12 hours as a payroll clerk, how much will you make in one week?
f. What are the practical replacement values for x? Would 8 hours at your payroll job be a
realistic replacement value? What about 50 hours?
g. When you don't work as an aide, what is your total weekly salary?
Please help!
Hence the output variable (total weekly earnings) is a function of the input variable (number of hours worked as a payroll clerk) and may be expressed by the equation y = 16x + 120.
What is a Variable?A variable is anything that may be altered in the context of a mathematical notion or experiment. Variables are frequently denoted by a single symbol. .
a. Input variables: hours worked as a cashier, payroll clerk, and assistant.
The total amount earned each week is the output variable.
b. To determine the weekly total, multiply the number of hours worked at each job by the hourly rate and put them together. As a result, the equation would be:
Total weekly wage = (hours worked as a cashier x cashier hourly rate) + (hours worked as a payroll clerk x payroll clerk hourly rate) + (hours worked as an aide x rate per hour as an aide)
c. The amount of hours worked as an assistant is always 10 hours fewer than that of a payroll clerk. Therefore, if x denotes the number of hours worked as a payroll clerk, then the number of hours worked as an assistant may be denoted as (x - 10).
d. The equation describing the total money earned each week is as follows:
(20 x 9.5) + (x x 9) + ((x - 10) x 7) = y
This expression is simplified as follows:
y = 190 + 9x - 70 + 7x
y = 16x + 120
Hence the output variable (total weekly earnings) is a function of the input variable (number of hours worked as a payroll clerk) and may be expressed by the equation y = 16x + 120.
f. The realistic replacement values for x would be determined by the maximum number of hours you may work at each job as well as the amount of time available to work. Working 8 hours as a payroll clerk may be a reasonable substitute value if you have restricted availability, but 50 hours is unlikely.
g. If you do not work as an aide, you may calculate your total weekly income by setting the number of hours worked as an aide to zero in the calculation for the total amount earned each week. This results in:
y = 16x + 120 + 0
y = 16x + 120
As a result, the total weekly wage would be determined only by the number of hours performed as a cashier and payroll clerk.
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How many liters are in 50 gallons of water? (Round to the nearest whole number and do not include units in your answer.) Note: There are 3.785 liters in a gallon
Answer:
190
Step-by-step explanation:
================================================
Work Shown:
1 gallon = 3.785 liters ..... given info
50*(1 gallon) = 50*(3.785 liters) .... multiply both sides by 50
50 gallons = 189.25 liters
50 gallons = 189 liters .... round to the nearest whole number
use the given graph to find the mean, median and mode of the following distribution: the mean is _______the median is _______the mode(s) is/are: __________Note: when the data is presented in a frequency table, the formula to find the mean is:
Solution:
Given:
From the graph above, a frequency table can be made as shown below;
To calculate the mean;
\(\begin{gathered} \text{Mean}=\frac{\Sigma fx}{\Sigma f} \\ \text{Mean}=\frac{189}{20} \\ \text{Mean}=9.45 \end{gathered}\)Therefore, the mean is 9.45
To calculate the median;
Median is the middle term when the data is arranged in rank order.
Since we have 20 terms, then the middle terms will be the 10th and 11th terms.
The median will be the mean of these two numbers.
\(\begin{gathered} 10th\text{ term=9} \\ 11th\text{ term=10} \\ \text{Median}=\frac{9+10}{2} \\ \text{Median}=\frac{19}{2} \\ \text{Median}=9.5 \end{gathered}\)Therefore, the median is 9.5
To calculate the mode;
The mode is the data that appears most in the set. It is the data with the highest frequency.
From the graph
From the graph
MY
What is the radius and diameter of the following circle?
16 cm
Radius =
cm
Diameter =
cm
Answer:
the radius is 16 and the diameter is 32
Step-by-step explanation:
diameter is always radius times two
Find the volume of the figure. For calculations involving , give both the exact value and an approximation to the nearest hundredth of a unit. Let d = 10 and h = 18.
________ ft3 ≈ _________ft3
Thus, the volume of cylinder with the given height and diameter is found as 1413 ft³.
Explain about the shape of cylinder:A cylinder is three-dimensional. It's not a flat thing. There are parallel circular bases in this shape. These bases have a curved face affixed to them. A cylinder in this instance has three faces. Along both end of a curved face, which rounds back to the face's origin, are two spherical bases.
Given that-
diameter d = 10 ftRadius r = 10/2 = 5 ftHeight h = 18 ftVolume of cylinder = πr²h
Volume of cylinder = 3.14 *5²*18
Volume of cylinder = 3.14*25*18
Volume of cylinder = 1413 ft³
Thus, the volume of cylinder with the given height and diameter is found as 1413 ft³.
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How do you write 77.875 to a fraction
Answer:
\(\frac{623}{8}\)
Step-by-step explanation:
\(\frac{78.875x1000}{1 x 1000} =\frac{77875}{1000}\)\(= \frac{623}{8}\)
Answer:
623/8
Step-by-step explanation:
steps to convert decimal into fraction
Write 77.875 as
77.875
1
Multiply both numerator and denominator by 10 for every number after the decimal point
77.875 × 1000
1 × 1000
=
77875
1000
Reducing the fraction gives
623
8
X
-1
0
1
2
3
y
1
10
1252
25
2
125
2
52:41
What is the rate of change of the function described in
the table?
ㅇ12/5
O5
ㅇ25/2
○ 25
Based on the figures given in the table, the rate of change of the function is b. 5.
What is the function's rate of change?This can be found as:
= (Y₂ - Y₁) / (X₂ - X₁)
Use points:
(0, 1/2) and (1, 5/2)
Solving gives:
= (5/2 - 1/2) / (1 - 0)
= 5
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(2x^2-9x-5) \div(x-5)
Answer:2x+1
Step-by-step explanation:
What is indicated by a positive value for a correlation? a. A much stronger relationship than if the correlation were negative b. A much weaker relationship than if the correlation were negative c. Increases in X tend to be accompanied by decreases in Y d. Increases in X tend to be accompanied by increases in Y
Answer: Increases in X tend to be accompanied by increases in Y
Step-by-step explanation:
The option given that indicates a positive value for a correlation is that an increases in X tend to be accompanied by increases in Y.
When two variables are said to be positively correlated, it simply means that the variables move along the same direction. As one variable increase, the other variable too will slow increase and vice versa.