The examples of functions in real life situation is given below .
In the question,
we have to give few examples for functions in real life .
the term Function is defined as as a relationship between two variables where for every input variable there is one output variable.
the examples are :
Example 1 :
Suppose that a car is driving at a constant speed of 30 mph.
the total distance "d" is equal to the rate, 30 times the time "t" ,that we drive for . the function for the relationship between our distance, d, and the time for driving is
d = f(t) =30 × t .
Example 2:
Suppose that the cost for 1 bag is $9 , then the function for the cost of "x" bags can be written as
Cost = f(x) = 9x .
Therefore , the real life situations examples are shown above.
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Carson and Romeo are floating in a lake. They each
start swimming away from the shore.
The graph shows that the two lines in the system of
equations that represent Carson's and
Romeo's distances from shore over time are the
same lines.
Distance from Shore
The completed statement that described the situation indicated by the graph of the linear system of equations representing Carson and Romeo distance from the shore is presented as follows;
The graph of the system of equations show that Romeo was floating close to Carson and then swam alongside Carson
The system of equations represented on the graph has an infinite number of solutions because the two lines in the system of equations are the same line
What is a linear system of equations?A system of linear equations are a set of linear equations that are formed by the same variables, and which work together.
The points on the graph of the equation, obtained from a diagram of a similar question online are; (0, 5), (1, 6), (2, 7), (3, 8), (4, 9) (5, 10)
Therefore, the slope of the equation representing the distance from the shore is, m = (6 - 5)/(1 - 0) = 1
The y-intercept, the point where x = 0, is (0, 5), which indicates that the y-intercept is c = 5
The equation of the line in slope-intercept form, y = m·x + c, therefore is; y = x + 5
Please find attached the graph in the question of the equation created with MS Excel
The details of the question obtained from a similar question on the internet indicate that the graph of the equation of Carson's distances and the graph of the equation of Romeo's distances are the same straight lines.
The y-intercept of the graph represent the location where the Carson and Romeo where initially floating, therefore;
Romeo was floating close to Carson
The coinciding graphs indicates that Carson and Romeo swam side by side
The equations of the distances which are equivalent, indicates that the system of equations has an infinite number of solutions
The reason the system of equations have an infinite number of solutions is because the two lined overlap
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Please help I will give brainlest
Answer: a = 9.3
Hope this helps you!
6.652 rounded to the nearest tenth
Answer: 6.7
Step-by-step explanation:
5. Sherman bought 17
items at the dollar store,
and used a coupon for a
discount. If his total after
the coupon was $16.15,
what percent discount did
he get?
Answer:
Step-by-step explanation: if you subtract 17 from 16.15 you will get your answer of 0.85 so if you turn that to a percentage you will get .00085
A poker hand coniting of 4 card i dealt from a tandard deck of 52 card. Find the probability that the hand contain exactly 2 face card
According to the given statement the probability that the hand contain exactly 2 face card is [tex]\frac{1}{221}[/tex].
Simple probability: What is it?Calculating a result or perhaps the probability that an event would ever occur is known as simple probability. Probability statistics are used by insurance firms to calculate the probability that they'll have to give out a claimed. By dividing one possible outcome by all other possible possibilities, one may determine a basic probability.
Briefing:A regular 52-card deck is used to deal a poker hand, which consists of 4 cards.
The total number of cards in a deck 52
Number of faces cards in a deck = 2
Number of cards not face cards = 50
The total number of combinations of drawing 4 cards out of 52 cards = [tex]={ }^{52} C_4[/tex]
Now , the combination of 4 cards such that exactly 2 of them are face cards = [tex]{ }^{2} C_2 \times{ }^{50} C_2[/tex]
That probability that perhaps the collection will comprise exactly six face cards is as follows:
= [tex]\frac{{ }^{2} C_2 \times{ }^{50} C_2}{{ }^{52} C_4}[/tex]
[tex]=\frac{\frac{2 !}{2 ! 0 !} \times \frac{50 !}{2 ! 48 !}}{\frac{52 !}{4 ! \times 48 !}}[/tex]
=[tex]\frac{1}{221}[/tex]
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How do you find the maximum number?
To find the maximum number in a list of numbers, we go through the whole list of numbers and compare each values.
We know that the maximum number is nothing but a number having the largest value in the data set.
To find the maximum number in a list of numbers, we go through the whole list of numbers and compare each values.
The maximum number in the list is the largest value found when all values have been compared.
For example, in the list of numbers 23, 98, 76, 90, 17, 71
the maximum number is 98
Therefore, the maximum number in the list is the largest value found when all values have been compared.
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there were 425 guests at a hotel. 170 guests ordered food. what percentage of the guests ordered food?
Answer:
255
Step-by-step explanation:
If 422 guests were at a hotel and 170 ordered food, The percentage of food would clearly be 255.
A book ha a ma 0. 65kg. What i the ma of each page,if there are 125 page and the book cover ha a ma of 400g
Using basic conversion rule and division, the answer is the weight of each page is 2g.
What do you mean by conversion?The same attribute is expressed using a unit conversion, but in a different unit of measurement. For instance, time can be expressed in minutes rather than hours, and distance can be expressed in kilometers, feet, or any other measurement unit instead of miles.
What do you mean by unitary method?The unitary approach involves calculating the value of a single unit, from which we can calculate the values of the necessary number of units.
mass of book=0.65 kg = 650g
mass of cover=400g
number of pages=125
mass of pages= 650-400
=250
mass of each page= 250/125
=2g
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Solve the equation
5+16w=6-45
Answer:
w = 6 / 21.
Step-by-step explanation:
To solve this equation, we first need to get all of the terms with the variable w on one side of the equation and all of the constants on the other side. To do this, we can use the distributive property to combine like terms on each side of the equation.
We can use the distributive property to combine the two terms on the left side of the equation to get 5 + 16w = 21w. This gives us the equation 21w = 6 - 45.
Next, we can add 45 to both sides of the equation to get 21w + 45 = 6 + 45. This simplifies to 21w + 45 = 51.
Finally, we can divide both sides of the equation by 21 to get the value of w. This gives us the equation w = (51 - 45) / 21 = 6 / 21.
Therefore, the solution to the equation is w = 6 / 21.
If three apples cost $1.97, how much would six apples cost?
Answer:
$3.94
Step-by-step explanation:
Since it is three apples and we want to know how much six apples would cost, we should just multiply $1.97 by 2. We have to double it.
1.97x2= $3.94
Answer:
$3.94
Step-by-step explanation:
So if 3 apples cost $1.97, then 6 apples cost twice that.
$1.97 x 2 = $3.94
the coast (in dollars) of a custom-made t-shirt is represented 0.75n+9.99,where n is the number of words in the design.write and interpret a simplified expression that represents the coast the coast of 12 t-shirts
The 0.75 represents the cost of the custom of each t-shirt and 9.99 represents the cost of custom shipment. And the total cost of 12 t-shirts is $18.99.
What is the solution to the equation?The allocation of weights to the important variables that produce the calculation's optimum is referred to as a direct consequence.
The cost (in dollars) of a uniquely crafted shirt is addressed as 0.75n + 9.99, where n is the number of words in the plan.
The cost of 12 t-shirts will be given as,
⇒ 0.75n + 9.99
⇒ 0.75 x 12 + 9.99
⇒ 9 + 9.99
⇒ 18.99
The 0.75 represents the cost of the custom of each t-shirt and 9.99 represents the cost of custom shipment. And the total cost of 12 t-shirts is $18.99.
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Kimo paid $24 for the shirt which was 75% of the regular price. What was the regular price?
Answer:
$32
Step-by-step explanation:
75/100=24/x
75x=100(24)
75x=2400
/75. /75
x=32
hopes this helps please mark brainliest
Answer:
answer above is correct!
Step-by-step explanation:
25% of 32 is 8
32-8 is 24, aka 75% of the og price:)
which assumption of ols assumes that there is no correlation between the error and the independent variables
The regression model is assumption of ols assumes that there is no correlation between the error and the independent variables
What is the Assumption of Linearity?
Linearity Assumption (OLS Assumption 1) - The model will be inaccurate and therefore unreliable if it is fitted to data that is not linearly connected. Extrapolating from the model is likely to produce inaccurate results. As a result, you must always draw a graph of the observed and anticipated values. The linearity assumption is confirmed if the graph is symmetrically distributed over the 45-degree line. By applying non-linear transformations to the independent variables, you can change the functional form of the regression if the linearity requirements are violated.
The OLS assumption of no multi-collinearity says that there should be no linear relationship between the independent variables.
Hence, The regression model is the assumption of ols assumes that there is no correlation between the error and the independent variables.
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Conor is going to the movie theater. A ticket to a movie costs t dollars, and there is a 15% amusement tax on each ticket.
a. Conor buys a ticket to see a movie. Write two expressions in terms of t showing his total cost.
b. The price of a movie ticket is $12.49. Use one of the expressions you wrote in part a to find Conor’s total cost, rounded to the nearest penny. Show your work.
a) Two mathematical expressions in terms of t showing Conor's total cost for going to the movie theater are:
1) 1.15t2) t + 0.15t.b) Using one of the mathematical expressions above, Conor's total cost for going to the movie theater is $14.36.
What are mathematical expressions?Mathematical expressions are combinations of numbers and variables, using mathematical operations such as addition, subtraction, multiplication, division, and exponentiation.
Mathematical expressions are also known as algebraic expressions.
The cost of a ticket to a movie = t dollars
Amusement tax on each ticket = 15%
a) Mathematical Expressions to model the total cost, t:
Total cost = 1.15t
Total cost = t + 0.15t
b) Price of a movie ticket = $12.49
Conor's total cost = 1.15(12.49)
= $14.36
Using algebraic expressions, when Conor purchases a movie ticket for $12.49, including a 15% amusement tax, brings the total cost to $14.36.
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Find the slope and y-intercept of each line from the given equation.
y = 3x + 4
Slope:
y-intercept:
y = -2x - 3
Slope:
y-intercept:
I just need it answered clearly, I HAVE to pass this quiz.
y= 3x + 4
Slope: 3
y-intercept: (0,4)
y= -2x - 3
Slope: -2
y-intercept: (0,-3)
Which is an equation of the line that passes through (–4, –5) and (–5,–7)
The equation of line that passes through points (-4, -5) and (-5, -7) is 2x - y + 3 = 0.
What is equation of line?A line's equation is an algebraic way of expressing the collection of points that make up a line in a coordinate system.
The many points that collectively make up a line on the coordinate axis are represented as a group of variables (x, y) to create an algebraic equation, also known as an equation of a line.
The formula for equation of line that passes through points (x₁, y₁) and having slope m is, y - y₁ = m (x - x₁)
The given points are (-4, -5) and (-5, -7)
To find the equation of line, use formula,
y - y₁ = m (x - x₁)
Where m = (y₂ - y₁) / (x₂ - x₁)
For the points (-4, -5) and (-5, -7),
The slope m = (-7 - (-5)) / (-5 - (-4)) = (-7 + 5) / (-5 + 4) = -2 / -1 = 2
The required equation of line,
y - (-5) = 2 (x - (-4))
y + 5 = 2 (x + 4)
y + 5 = 2x + 8
2x - y + 3 = 0
The required equation of line is 2x - y + 3 = 0.
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Is it possible to create a system of inequalities that has no solution? If so, create one and explain how the graph would show no solutions. If not, explain why.
Answer: See explanation.
Step-by-step explanation:
Any false inequality has no solution. For example |x+3|<-2 has no solutions for x. The graph would not display any answers for x as there is no solution due to the absolute value.
10x+5=3x-23 how do u solve for x
Step 1: Subtract 5 from Both Sides
10x + 5 = 3x - 23
10x = 3x - 28
Step 2: Subtract 3x from Both Sides
10x = 3x - 28
7x = -28
Step 3: Divide Both Sides By 7
7x = -28
x = -4
Answer: x = -4
Hope this helps!
Answer:
-4
Step-by-step explanation:
Given,
10x+5=3x-23
10x-3x=(-23)-5
7x=-28
x=-28/7
x=-4
A costume rental store charges a fixed refundable security deposit plus an amount per
day that the costume is rented. The table shows the total cost to rent a costume for x
days. What is the initial value?
Number of Days (x) Total Cost (y)
# of days (x)
1
2
3
4
Total Cost(y)
41
48
55
62
The initial value is___
Answer:
The initial value in the given table is 41. This is the total cost to rent a costume for 1 day, which is the smallest number of days listed in the table. The initial value represents the fixed refundable security deposit that the costume rental store charges, which is a constant amount that does not depend on the number of days the costume is rented for.
Step-by-step explanation:
Natsumi paints walls for a living. She paints at a constant speed, and then she takes a constant amount of time to clean up. The table compares the total area natsumi paints (in square meters) and the time it takes natsumi to finish painting and cleaning up (in hours). Area (square meters) time (hours) 303030 222 454545 2. 752. 752, point, 75 606060 3. 53. 53, point, 5 how long does it take natsumi to paint 111 square meter?.
To paint 111 square meters of walls, it takes 6.05 hours. The result is obtained by using the speed of Natsumi to paint per hour.
How to calculate the time to paint the wall?With a constant speed to paint the wall, Natsumi has done painting as the shown data in the table.
Area (square meters) - Time (hours)
30 square meters - 2 hours45 square meters - 2.75 hours60 square meters - 3.5 hoursThis is a problem with comparison. Let's take two samples of the data!
45 - 30 = 15 square meters3.5 - 2.75 = 0.75 hoursFrom the data, we know that for every additional 15 square meters, the time needed increases by 0.75 hours.
Then, we can continue the table.
75 square meters - 4.25 hours90 square meters - 5 hours105 square meters - 5.75 hours111 square meters - x hoursThe speed of Natsumi to paint per hour is
15/0.75 = 20 square meters/hour
The remain area
111 - 105 = 6 square meters
Time needed for the remain area is
6/20 = 0.3 hours
To paint 111 square meters of walls, it takes
x = 5.75 hours + 0.3 hours
x = 6.05 hours
Hence, time needed to finish painting and cleaning up 111 square meters of walls is 6.05 hours.
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What is a split infinitive and how do you fix it?
Split infinitives are grammatical structures where the words "to" and "infinitive" are separated. Move the phrase separating the infinitive from the split position to get rid of the split infinitive.
In the given question we have to explain, what is a split infinitive and how we fix it.
As we know that,
Split infinitives are grammatical structures in which an adverb or adverbial phrase separates the "to" and "infinitive" halves of what is more often known as the to-infinitive in modern linguistics.
A split infinitive is created when the word "to" and the infinitive verb are separated by an adverb. To eliminate the split infinitive, move the phrase that divides it from the split place.
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at a large university, data were collected on the number of sisters and brothers that each student had. let the random variable x represent the number of sisters and the random variable y represent the number of brothers. the distribution of x has mean 1.00 and standard deviation 0.94. the distribution of y has mean 1.07 and standard deviation 1.04. what is the mean of the distribution of x y ?
The required mean of the distribution of x + y for the given data is 2.07.
Explain mean distribution.A statistical distribution, or probability distribution, portrays how values are dispersed for a field. As such, the measurable dissemination shows which values are normal and exceptional. There are numerous sorts of measurable appropriations, including the chime formed typical conveyance.
According to question:We have,
mean = 1 and Standard deviation = 0.94
In distribution of Y
mean = 1.07 and standard deviation = 1.04
mean of distribution X + Y = ?
Then,
the mean of the distribution of X+Y
= mean of x + mean of y
= 1 + 1.07
= 2.07
Thus, the required mean is 2.07.
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let nn be the least positive integer that is both 2222 percent less than one integer and 1616 percent greater than another integer. find the remainder when nn is divided by 10001000.
The smallest integers k and m that satisfy this are k=1450 and m=975, so N = 1131.
How to solve word problems?
It's actually fairly easy to solve word problems using a tried-and-true step-by-step approach.
Aloud to yourself, read the issue.Make a Drawing.Ask yourself, "What am I looking for?"List the items that have been provided.Locate the key phrases.Solve.Verify your work.If N is 22 percent less than one integer k, then
N = 78/100 k
= 38k/100
In N is 16 percent greater than another integer m, So
N = 116m / 100
= 29m/25.
Therefore, k is divisible by 50 and m is divisible by 25.
Setting these two equal, we have 38k/100 = 29m/25.Multiplying by $50$ on both sides, we get 39k = 58m
Hence, The smallest integers k and m that satisfy this are k=1450 and m=975, so N = 1131.
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What type of word is splitting?
Answer:
Splitting is where numbers in an equation are broken apart to make it easier to calculate.
Step-by-step explanation:
Splitting is where numbers in an equation are broken apart to make it easier to calculate. Ex:
21 * 7
20 * 7 + 1 * 7 =
140 + 7
147
Last week he wanted to earn money to buy the new iPhone37 your parents offered to pay five dollars for every chore you complete. your grandma heard about your efforts and paid you $55, leaving your current amount at $140. How many chores have you completed so far
Answer: 17 chores
Step-by-step explanation:
5x+55=140
5x=85
5x/5=85/5
x--->chores
x=17
Need done asap !!
Point A :
Point B :
And what is the rate of change of y with respect to x for this line?
Rate of change :
What is the slope of the line passing through the points (- 2 3 and 2 7?
The slope of the line passing through (-2, 3) and (2, 7) will be equal to 1.
Slope of the line is needed for the equation of the line and it is the measure of the degree of steepness of any given curve and If there are two points (x₁, y₁) and (x₂, y₂) and we need the slope then the formula of finding the slope between these points is expressed as
m = (y₂ - y₁)/(x₂ - x₁)
where m is the slope between the points, (y₂ - y₁) is difference between the y coordinates and (x₂ - x₁) is the difference between the x coordinates.
Now the points given are (-2, 3) and (2, 7), so the difference between the coordinates is expressed as
Now the slope will be equal to
m = (7 - 3)/(2 + 2)
m = 4/4
m = 1
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In a city in Ohio, the sales tax rate is 7.25%. Complete the table.
When a train of length of 150 m is Travelling at a speed of 54 km per hour How much time does it take to cross 1 electric pole?
The train will take 10 seconds to cross 1 electric pole at the speed of 54 kilometres per hour.
The time taken will be calculated by the formula- time = distance/speed.
Now firstly converting the speed to meter per second.
As we know, 1 km is 1000 meters and 1 hour has 3600 seconds. Thus, speed = (54 × 1000)/3600
Cancelling zero and performing multiplication and division
Speed = 15 m/s.
Keep the values in formula -
Time = 150/15
Performing division
Time = 10 seconds
Hence, it takes 10 seconds by the train.
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Alexander uses cupric chloride to etch circuit boards. He recorded the room temperature, in ^\circ\text{C}
∘
Cdegrees, start text, C, end text, and the etching rate, in \dfrac{\mu\text{m}}{\text{min}}
min
μm
start fraction, mu, start text, m, end text, divided by, start text, m, i, n, end text, end fraction, of the cupric chloride.
After plotting his results, Alexander noticed that the relationship between the two variables was fairly linear, so he used the data to calculate the following least squares regression equation for predicting the etching rate from the room temperature:
\hat y = 2 +\dfrac{1}{5} x
y
^
=2+
5
1
xy, with, hat, on top, equals, 2, plus, start fraction, 1, divided by, 5, end fraction, x
What is the residual if the room temperature was 25^\circ\text{C}25
∘
C25, degrees, start text, C, end text and the cupric chloride had an etching rate of 5\dfrac{\mu\text{m}}{\text{min}}5
min
μm
5, start fraction, mu, start text, m, end text, divided by, start text, m, i, n, end text, end fraction ?
\dfrac{\mu\text{m}}{\text{min}}
min
μm
The residual, if the cupric chloride had an etching rate of 5 [tex]\frac{\mu m}{min}[/tex], is given as follows:
-2 [tex]\frac{\mu m}{min}[/tex]
How to obtain the residual?For a data-set, the definition of a residual is that it represents the difference of the actual output value by the predicted output value, that is:
Residual = Observed - Predicted.
The predicted etching rate for a temperature of x in this problem is given by the line of best fit, defined as follows:
y = 2 + 1/5x.
Hence, for a temperature of 25ºC, the estimated etching rate is given as follows:
y = 2 + 1/5(25) = 2 + 5 = 7.
The observed etching rate is of 5 units, hence the residual is calculated as follows:
Residual = Observed - Predicted.
Residual = 5 - 7
Residual = -2.
Missing InformationThe problem is given by the image shown at the end of the answer.
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