Depending on the comparable model, Energy Star appliances will save you 10% to 50% of the energy used;
Does utilising less energy cost less money?Energy efficiency helps homes and companies save money on their monthly energy bills by minimising energy consumption. In the long run, energy-efficient items often end up saving you money even though they initially cost more to purchase than other solutions.Depending on the comparable model, Energy Star appliances will save you 10% to 50% of the energy used; if you are replacing an older appliance, the savings will be much more. The Environmental Protection Agency and the Department of Energy together run a programme called Energy Star.To learn more about energy cost refer to:
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Using an energy efficient bulb will result in a significant cost saving over the long term.
Does utilising less energy cost less money?
A normal incandescent bulb uses 60W of power and lasts around 1000 hours, while a LED bulb uses around 8-12W of power and can last up to 25,000 hours.
So if you use the light 5 hours a day, 365 days a year, a 60W incandescent bulb will consume 11.25 kWh per year and cost you approximately £1.35 per year to run. In contrast, a 8W LED bulb will consume approximately 0.6 kWh per year, costing you approximately £0.072 per year to run.
Therefore, using an energy efficient bulb will result in a significant cost saving over the long term.
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PLEASE HELP ASAP!!!!! CORRECT ANSWER GETS BRAINLY
Answer:
(c) pr +ps +qr +qs
Step-by-step explanation:
You want to identify an expression that can be factored by grouping.
Factor by groupingThis method of factoring involves grouping terms that have a common factor, then factoring that out. If the entire expression can be factored by grouping, then the result of this first round of factoring is expressions that also have a common factor.
One expression that can be factored by grouping is ...
pr +ps +qr +qs
= p(r +s) +q(r +s) . . . . . . . each pair of terms is factored
Now we notice that the factor (r+s) is common to both terms, so we can factor this further:
= (p +q)(r +s)
The expression that can be factored by grouping is ...
pr +ps +qr +qs . . . . choice C
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an elephant can hear sounds with frequencies from 16 hertz to 12,000 hertz. a mouse can hear frequencies from 1000 hertz to 91000 hertz. write an absolute value inequality for the hearing range of each animal
The absolute value inequality for the hearing range of each animal is mod(e - 6008) ≤ 5992 and mod(m - 46000) ≤ 45000, respectively.
An absolute value equation has no solution if the absolute value expression equals a negative number since an absolute value can never be negative. You can write an absolute value inequality as a compound inequality. This holds true for all absolute value inequalities. You can replace > above with ≥ and < with ≤.
To solve absolute-value inequalities, first, we must drop the absolute-value bars and restate the inequality in one of two ways, depending on the case.
According to the question,
The elephant can hear: 16 ≤ e ≤ 12000
The avg hearing = (12000 + 16)/2 = 6008
Tolerance = 12000 - 6008 = 5992
Therefore, the value absolute value inequality for the hearing of the elephant is mod(e - 6008) ≤ 5992.
Similarly,
The mouse can hear: 1000 ≤ e ≤ 91000
The avg hearing = (12000 + 91000)/2 = 46000
Tolerance = 46000 - 1000 = 45000
Hence, the value absolute value inequality for the hearing of the mouse is mod(m - 46000) ≤ 45000.
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Arah mailed her computer to store b for repairs. her bill was: total cost of computer repair = $1,444.50 shipping = 2 percent of total cost if sarah wanted to include a 15 percent gratuity, based on the total cost of the computer repair, excluding shipping, how would you find her new total cost? arah mailed her computer to store b for repairs. her bill was: total cost of computer repair = $1,444.50 shipping = 2 percent of total cost if sarah wanted to include a 15 percent gratuity, based on the total cost of the computer repair, excluding shipping, how would you find her new total cost?
Sarah's new total cost will be $1,685.73 including 15% gratuity.
To find the new total cost, we can first calculate the cost of shipping, which is 2% of the total cost of the computer repair.
Shipping = 2% * 1,444.50 = 28.89
We can then subtract the shipping cost from the original total cost to find the cost of the computer repair, excluding shipping.
Computer repair cost (excluding shipping) = 1,444.50 - 28.89 = 1,415.61
Now we can add the 15% gratuity to the cost of the computer repair, excluding shipping:
Gratuity = 15% * 1,415.61 = 212.34
Finally, we can add the gratuity and shipping cost back to the original cost of the computer repair to find the new total cost:
New total cost = 1,444.50 + 28.89 + 212.34 = $1,685.73
So, Sarah's new total cost will be $1,685.73 including 15% gratuity.
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Express sin T as a fraction in simplest terms.
sin T as a fraction in simplest terms is 7/17
How to express sin T as a fraction in simplest terms?Trigonometry is a branch of mathematics dealing with the relationship between the ratios of the sides of a right-angled triangle with its angles.
Sin T = opposite/ hypotenuse
The opposite is where the angle T is facing. That is opposite = 7.
The hypotenuse is where the right angle is facing. That is hypotenuse = 17
Thus, Sin T = 7/17
We cannot further simply sin T.
Therefore, the value of sin T as a fraction in simplest terms is 7/17
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Which of the following method is used for finding approximate solution of differential equation Mcq?
(a) Euler's method
(b) Picard's method
(c) Runge-Kutta method
(d) Gauss-Seidal method.​
Runge Kutta method is used for finding approximate solution of differential equation
The term differential equation in math is defined as method of finding the derivative of a function.
This process is used to find the instantaneous rate of change in function based on one of its variables and the common example is the rate change of displacement with respect to time, called velocity.
Here we have to identify the method that is is used for finding approximate solution of differential equation
As per the definition of differential equation, here we have know that the best suitable method for the given situation is Runge Kutta method.
Because in this method we have done provides the approximate value of y for a given point x and it only the first order ODEs can be solved using the Runge Kutta RK4 method.
Therefore, the correct option is (c).
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What is the value of x?
Enter your answer in the box.
units
Answer:
Step-by-step explanation:
As DY is parallel to FS which is DJ/FD = JY/SY.
50/x = 42/63.
1/x = 42/(50 × 63)
x = (50 × 63)/42
x = 3150/42
x = 75 units
Answer:
Step-by-step explanation:
Use proportion- 63/42 as x/50
Use cross multiplication 63 times 50 = 42 times x
3150 = 42x
3150 divided by 42 = 75
The answer is: x= 75
Determine the missing value on the vertical axis represented by [?]. Per Capita Personal Income by State for 2004 52000 9[21 20000
The vertical axis in this graph represents Per Capita Personal Income (PCPI) by State for 2004. The missing value on the vertical axis represented by [?] is $38,400.
$38,400
The vertical axis in this graph represents Per Capita Personal Income (PCPI) by State for 2004. The number given to us is $52,000, and the other number given is $20,000. To determine the missing value, we need to calculate the difference between the two numbers. We do this by subtracting $20,000 from $52,000.
$52,000 - $20,000 = $32,000
To find the missing value, we need to add the difference to the given value of $20,000.
$20,000 + $32,000 = $52,000
Therefore, the missing value on the vertical axis represented by [?] is $38,400.
The missing value on the vertical axis represented by [?] is $38,400.
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The function ƒ(x) = x−−√3 is translated 3 units in the negative y-direction and 8 units in the negative x- direction. Select the correct equation for the resulting function.
The final function after transformations, is [tex]f(x +8) = \sqrt[3]{x+8} - 3[/tex]
The technique of altering an existing graph or graphed equation to create a different version of the following graph is known as graph transformation. The modification of algebraic equations is a typical form of algebraic problems. Sometimes graphs are translated, or moved about the xy-plane; sometimes they are stretched, rotated, inverted, or a combination of these transformations.
Now, there are 2 different transformations applied to the function here.
First Transformation:
[tex]f(x) = \sqrt[3]{x}[/tex] is translated 3 units in the negative y direction.
After transformation, the function is [tex]f(x) = \sqrt[3]{x} - 3[/tex].
Second Transformation:
The function [tex]f(x) = \sqrt[3]{x} - 3[/tex] is translated 8 units in the negative x direction.
After transformation, the function is [tex]f(x +8) = \sqrt[3]{x+8} - 3[/tex].
Therefore, the final function, after transformations, is [tex]f(x +8) = \sqrt[3]{x+8} - 3[/tex].
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in a research study to test a new drug on patients with brain cancer, patients were divided into 2 groups randomly. one group received the drug and the other group did not receive the drug. after 6 weeks, the measured results showed reduction in symptoms among the first group who received the drug. is this an example of an observational study or experimental study? if it is an experiment, what is the controlled factor?
This study is an example of an experimental study. The controlled factor is the group of patients.
The collection of data is gathered and chosen from a statistical population with the use of some prescribed techniques in both statistics and quantitative methodology. Data sets may be divided into two categories: sample and population.
All the components of the data set are included in the population, which also contains quantifiable qualities like mean and standard deviation.
A sample is made up of one or more observations that are taken from the population, and a statistic is what makes a sample quantifiable. The act of sampling is the selection of a sample from a population.
Complete question:
In a research study to test a new drug on patients with brain cancer, patients were divided into 2 groups randomly. One group received the drug and the other group did not receive the drug. After 6 weeks, the measured results showed reduction in symptoms among the first group who received the drug. Is this an example of an observational study or experimental study? If it is an experiment, what is the controlled factor?
Select the correct answer below:
The study is an observational study.
The study is an experiment.
The controlled factor is the symptoms of the disease.
The controlled factor is the group of patients.
The controlled factor is the type of drug given to each group.
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Letter
OLUTION
m
1+ 4(3x - 10) 12x equivalent to -39?
a factory puts 2/5 of a gallon of vinegar into each batch of salad dressong. how many gallons of vinegar will be used in 5 batches?
Answer:
2 gallons
Step-by-step explanation:
Make a proportion of gallons of vinegar to batches of salad dressing
[tex]\frac{\frac{2}{5} }{1}[/tex] = [tex]\frac{x}{5}[/tex]
1 x 5 = 5, so
[tex]\frac{2}{5}[/tex] x5 or
[tex]\frac{2}{5}[/tex] x [tex]\frac{5}{1}[/tex] = [tex]\frac{10}{5}[/tex] = 2
PLEASE HELP, I NEED HELP,AND I DONTT UNDERSTAND!!
Answer: 16
Step-by-step explanation:
First, calm down.
The area of the trapezoid cannot be found in a straightforward way.
Instead, what we need to do here is divide the trapezoid into two parts, a right triangle and a trapezoid.
Finding the area of the right triangle is easy. You just need to multiply the sides and divide it by 2.
Area of right triangle = 5*4/2 = 10
Next, you need to find the area of the trapezoid.
Area of trapezoid(small) = (2+1)*4/2 = 6
All you need to do now is add the area of these two together, and you get 16.
Answer:
A = 16 units²
Step-by-step explanation:
the area (A) of a trapezoid is calculated as
A = [tex]\frac{1}{2}[/tex] h (b₁ + b₂ )
where h is the perpendicular height between the parallel sides b₁ and b₋₂
here h = 4 , b₁ = 6 and b₂ = 2
A = [tex]\frac{1}{2}[/tex] × 4 × (6 + 2) = 2 × 8 = 16 units²
Kaitlin drove 335 miles in 5 hours.
At the same rate, how long would it take her to drive 737 miles?
Answer:
11 hours
Step-by-step explanation:
First we divide 335 by 5 to get the hourly rate.
We get 67 as the answer.
Next we divide 737 by 67 and we get 11 hours.
Hope this helps. :)
Write the rule for the linear function. Remember a function rule is written using using f(x). X -10 0 10 y -1 1 3
The Funny Book has its pages numbered the following way:
1, 2, 2, 3, 3, 3, 4, 4, 4, 4, 5 ... That is, there is one 1, two 2s, three 3s, four 4s, five 5s, and so on.
What is the greatest number of pages that the Funny Book can have if it contains a page that is
numbered “20” but not any that are numbered “21”?
Answer: We can use the formula for the sum of an arithmetic series to find the number of pages in the Funny Book. The formula is:
S = n/2 (2a + (n-1)d)
Where S is the sum of the series, n is the number of terms, a is the first term, and d is the common difference.
In this case, the series is the page numbers, a = 1, d = 1, and we know that there is no page numbered "21" but the page numbered "20" is there.
The number of pages numbered 20 is 20, and the number of pages numbered 19 is 19. So n = 20 + 19 = 39
By substituting the values into the formula
S = 39/2 (2*1 + (39-1)1) = 3920 = 780
The greatest number of pages that the Funny Book can have if it contains a page numbered 20 but not any that are numbered 21 is 780.
Step-by-step explanation:
7. A teacher asks students to read works from a prepared list of 12 works covering 4
genres: 3 comedies, 4 mysteries, 3 classics, and 2 poetry. If each student is assigned
one work from each of the 4 genres, then how many different reading assignments are
possible?
A. 4
B. 24
C. 48
D. 72
E. 192
Answer:
Step-by-step explanation:
To get the answer, you have to do 3·4·3·2=how many are possible.
So the answer is D, 72 possible out comes.
There are 72 ways possible reading assignments.
What is fundamental counting principle?The fundamental counting principle or basic principle of counting is a method or a rule used to calculate the total number of outcomes when two or more events are occurring together.
Given that, students need to prepare assignments from 4 genres: 3 comedies, 4 mysteries, 3 classics, and 2 poetry.
So, the total possible outcomes = 3 × 4 × 3 × 2 = 72
Hence, there are 72 ways possible reading assignments.
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a researcher is interested in the relationship between caffeine consumption and activity level for elementary school children. a sample of 20 children is obtained and each child is interviewed to determine a level of caffeine consumption. the researcher then records the level of activity for each child during a 30-minute session on the playground. is this an experimental or correlational study? explain your answer.
This is an experimental study, as the researcher is manipulating the independent variable (caffeine consumption) to measure the dependent variable (activity level) in a controlled environment.
This is an experimental study, as the researcher is manipulating the independent variable (caffeine consumption) to measure the dependent variable (activity level) in a controlled environment. In an experimental study, the researcher has control over the independent variable and is able to measure the results of the manipulation on the dependent variable. In this study, the researcher is measuring the activity level of the children based on their caffeine consumption, which the researcher can control. The researcher is also measuring the activity level in a controlled environment, the playground, which provides a consistent setting for the experiment. This type of study is designed to test the researcher's hypothesis and determine whether there is a relationship between caffeine consumption and activity level.
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elizabeth is a landscape designer. she designed a small pond with a fountain that her company plans to manufacture and market. it is a free-form shape, and the company wants to include the area of the pond on the packaging. a. she takes a model of the pond and places it inside a 25-ft by 25-ft square. what is the area of the square? (express your answer in square feet) b. she then takes a photo of the pond in the square. then, using a graphing calculator, she generates 5,000 random points inside the square with the pond. she finds that 3,200 of these points land inside the pond outline. what percent of the points landed in the pond? c. what is the area of the pond, to the nearest square foot?
Answer:
a. The area of the square is 25 feet x 25 feet = 625 square feet.
b. To find the percent of points that landed in the pond, we divide the number of points that landed in the pond by the total number of points generated and multiply by 100.
3,200 points / 5,000 points = 0.64
0.64 x 100 = 64%
so 64% of the points landed in the pond.
c. To find the area of the pond, we multiply the proportion of points that landed in the pond by the area of the square.
64% of the points landed in the pond = 0.64
Area of the pond = 0.64 x 625 square feet = 400 square feet. So, the area of the pond, to the nearest square foot, is 400 square feet.
Step-by-step explanation:
The exchange rate for one United States dollar (US $1.00) is two dollars and seventy cents in Eastern Caribbean currency (EC$2.70) What is he value of US$4.50 in EC currency?
The value of US$4.50 in Eastern Caribbean currency is 12.15 dollars.
How to find the value of a currency?The exchange rate for one United States dollar (US $1.00) is two dollars and seventy cents in Eastern Caribbean currency (EC$2.70) .
Therefore, the value of US$4.50 in EC currency can be computed as follows:
Using the conversion rate,
1 US dollars = 2.70 Eastern Caribbean dollars
4.50 US dollars = ?
cross multiply
Therefore,
value of 4.5 US dollars to EC dollars = 2.7 × 4.50
value of 4.5 US dollars to EC dollars = 12.15 dollars
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a card dealer lays out five cards, face down, from a single deck of 52 cards. what is the probability that at least one of them is an ace?
The probability that at least one person receives exactly one aces in their 52 cards is 4/52= 1/13
We define the following events:
A: person A receives exactly two aces in their five cards.
B: person B receives exactly two aces in their five cards.
C: person C receives exactly two aces in their five cards.
We need to calculate P(A∪B∪C). According to the principle of inclusion and exclusion:
P(A∪B∪C)= P(A)+P(B)+P(C)-P(A∩B)-P(A∩C)-P(B∩C)+P(A∩B∩C)
Total outcomes is equal to because there 52 cards and we select 5 of them.
The probability of each event is given by:
P(A)=P(B)=P(C)===0.0399
where the possible outcomes are 2 aces and 3 of the other cards.
Then, the intersections of the events mean that one player gets 2 aces and the other gets 2 aces too.
P(A∩B)=P(B∩C)=P(A∩C)==0.0001
Finally,
P(A∩B∩C)=0 because it is not possible that the three events occur at the same time due to there are only 4 aces.
P(A∪B∪C)= 0.0399+0.0399+0.0399-0.0001-0.0001-0.0001+0
P(A∪B∪C)=0.1194
The probability that at least one person receives exactly two aces in their five cards is 0.1194.
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7 of 9 The graph shows the speed (m/s) of a car for 40 seconds. By using a single appropriate trapezium, estimate the distance travelled by the car in those 40 seconds. 20 T Speed (m/s) 15 10 LO 5 0 0 5 10 15 20 Time (seconds) 30 35 40 +25
Therefore , the solution of the given problem of speed comes out to be the average distance travelled is 225 meters.
What exactly is speed?We can determine how fast that anything is traveling by looking at it from a distance. The amount of distance an object can go in a given length of time depends on its speed. Velocity is calculated using the formula velocity = distance/time. The three most used units of speed are meters per second (m/s), kilometers per hour (km/h), and miles per hour (mph) (mph).
Here,
Given :
Time = 40 seconds.
To find the distance:
We use speed and time formula
=> distance = speed * time
=> distance = 15 * 30
=> distance = 225 meters.
Therefore , the solution of the given problem of speed comes out to be the average distance travelled is 225 meters.
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what is the difference between the multiplication rule for independent event and the general multiplication rule
Unsurprisingly, the general rule can be applied more broadly than the specific rule, which is the difference between the two. The specific rule is only applicable to dependent events; it applies to both independent and dependent events.
What is the main rule for multiplying?
Multiplication Rule The likelihood that both events A and B will occur if events A and B originate from the same sample space is equal to the probability that A will occur times the probability that B will occur provided that A has already occurred.
What is the rule for multiplying independent events?
The multiplication rule for independent events is the sixth rule of probability. P(A and B) = P(A) * P if A and B are two INDEPENDENT events (B).
P(A and B) = P(A) * P(B) is a special multiplication rule that is only applicable when the two occurrences are independent of one another. To put it another way, it only functions if the probability of one occurrence does not change for the other.
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Using a base of 3 and solutions (y values) of 3,9,27,81,243 only, prove: (where log3y)
a. product property for logarithms:
b. quotient property for logarithms:
c. power property for logarithms:
a. To prove the product property for logarithms using a base of 3 and solutions of 3, 9, 27, 81, and 243, we can start with the equation: log3(xy) = log3x + log3y
Let's say we want to find log3(81 * 27)
We know that log3(81) = 4, and log3(27) = 3
So, log3(81 * 27) = log3(81) + log3(27) = 4 + 3 = 7
We can verify this by using the fact that we know the solution of log3(81*27) is 243, and 3^7 = 243.
b. To prove the quotient property for logarithms using a base of 3 and solutions of 3, 9, 27, 81, and 243, we can start with the equation: log3(x/y) = log3x - log3y
Let's say we want to find log3(81 / 27)
We know that log3(81) = 4, and log3(27) = 3
So, log3(81 / 27) = log3(81) - log3(27) = 4 - 3 = 1
We can verify this by using the fact that we know the solution of log3(81/27) is 9, and 3^1 = 9.
c. To prove the power property for logarithms using a base of 3 and solutions of 3, 9, 27, 81, and 243, we can start with the equation: log3(x^n) = n*log3x
Let's say we want to find log3(81^3)
We know that log3(81) = 4
So, log3(81^3) = 3 * log3(81) = 3 * 4 = 12
We can verify this by using the fact that we know the solution of log3(81^3) is 243, and 3^12 = 243.
In all the above examples, we can see that the properties are upheld, and we can use the log3(y) values of 3, 9, 27, 81, and 243 to prove the Product, Quotient and Power property of logarithms with base 3.
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how many 'words' with four letters (not necessarily real) are there that start with a vowel and end with an s
As per the permutation method, there are 215,160 different ways are available for making the letters with vowel as the starting letter and s as the ending letter.
The term permutation in math is defined as a mathematical technique that determines the number of possible arrangements in a set when the order of the arrangements matters
Here we need to find the number of combination for the word that start with a vowel and end with an s.
As we all know that there are 26 letters in alphabets.
so that would be all four letter words - four letter words with no vowel.
Then it can be calculated as the total number of four letter words
=> 26P4 or 26C4*4!
Then the number of four letter words without a vowel is calculated as
=> 21P4
Therefore, it can be written as,
=> 26P4 - 21P4
Then the resulting word count is calculated as,
=> (26 x 25 x 24 x 23) - (21 x 20 x 19 x 18)
=> 215160
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Yui makes a list of the balances in her savings account at the end of each month. She notices that each month’s total is 5% greater than the previous month’s total. She writes a recursive formula to describe the account balances.
Which value should she use as the common ratio?
Answer:
Step-by-step explanation:
The common ratio that Yui should use in her recursive formula is 1.05. This is because each month's total is 5% greater than the previous month's total, which can be represented as 1 + (0.05) = 1.05.
Show all work to identify the asymptotes and state the end behavior of the function f of x is equal to 4x divided by the quantity of x minus 16 end quantity.
The function f(x) = 4x/(x-16) has vertical asymptotes at x = 16.
To see this, we can factor the denominator:
f(x) = 4x/(x-16) = 4x/x - 16
As x approaches 16 from the left or right, the denominator x-16 approaches 0, but the numerator 4x does not. This means that the function approaches infinity or negative infinity as x approaches 16, indicating a vertical asymptote at x = 16.
To find the end behavior of the function, we can look at the behavior of the function as x approaches positive or negative infinity. We can see that f(x) = 4x/(x-16)
As x increases without bound, x-16 increases without bound. This means that the denominator becomes larger and larger, making the function approach 0 as x approaches positive infinity.
As x decreases without bound, x-16 decreases without bound as well, this means that the denominator becomes smaller and smaller, making the function approach 0 as x approaches negative infinity.
Therefore, the function has a vertical asymptote at x = 16 and approaches 0 as x approaches positive and negative infinity.
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Answer:
f(x) =. 4x/(x-16)
4x= 0 =>x=
x-16= 0
=>x=16
Asymptotes(x) =16
Step-by-step explanation:
bonsoir, j'aurais vraiment besoin d'aide pour cet exercice svpp:
A= 3x+6+(x+2)(6x+8)
1.a)factoriser 3x+6.
b)en déduire une factorisation de A.
2) Factoriser:
a) B= x**2-4+(x-1)(x+2)
b) C= x**2+4x+(x+1)(x+4)
(pouvez vous détailler pour que je puisse comprendre svp mercii :) )
Answer:
Step-by-step explanation:
a) Pour factoriser 3x + 6, vous devez trouver deux nombres qui ajoutés donnent 6 et qui multipliés donnent 3x. Les deux nombres sont 3 et 2, donc vous obtiendrez : 3x + 6 = 3(x + 2).
b) En déduire une factorisation pour A : A = 3x + 6 + (x + 2)(6x + 8) = 3(x + 2) + (x + 2)(6x + 8) = (x + 2)(3 + 6x + 8) = (x + 2)(9x + 10).
2)a) Pour factoriser B = x**2 - 4 + (x - 1)(x + 2), vous devez trouver deux nombres qui ajoutés donnent x**2 - 4 et qui multipliés donnent (x - 1)(x + 2). Les deux nombres sont x - 1 et x + 2, donc vous obtiendrez : x**2 - 4 + (x - 1)(x + 2) = (x - 1)(x + 2).
b) Pour factoriser C = x**2 + 4x + (x + 1)(x + 4), vous devez trouver deux nombres qui ajoutés donnent x**2 + 4x et qui multipliés donnent (x + 1)(x + 4). Les deux nombres sont x + 1 et x + 4, donc vous obtiendrez : x**2 + 4x + (x + 1)(x + 4) = (x + 1)(x + 4).
What is the solution of this system in point/coordinate-form? Y=3x-27, x-1/3y=9
Unfortunately not multiple choice.
The solution to the system of equations for this problem is given as follows:
(x, 3x - 27).
How to solve the system of equations?The system of equations for this problem is defined by these two equations presented as follows:
y = 3x - 27.x - y/3 = 9.The first equation can be simplified as follows:
y = 3x - 27 = 3(x - 9).
Hence, substituting y = 3(x - 9) into the second equation, the solution for x can be obtained as follows:
x - 3(x - 9)/3 = 9.
x - x + 9 = 9
0x = 0.
As the system has the format 0x = 0, and considering that the division of 0 by 0 can assume any result different of zero, the system has an infinite number of solutions, in the following format:
(x, 3x - 27).
Meaning that the independent variable x is the free variable and the dependent variable y depends on the value of x.
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About 10000 children were asked what their favourite school subject was. The bar chart shows the results for the most popular subjects. % 30 20 10 Art History Maths Subject P.E. a) Which subject was the third most popular? b) About what percentage of the students chose Maths? Submit Answer
a) Maths was the third most popular subject, according to the chart showing the results for the most popular subjects using their percentages.
b) About 10 percent of the students chose Maths.
What is the percentage?The percentage is the ratio of one variable or value compared to another.
Percentages are proportional values. They are obtained as the quotient of one value (the numerator) divided by another value (the denominator) before being multiplied by 100.
Subject Percentage
Art 30%
History 20%
Maths 10%
Thus, based on the percentage of popular subjects, 10% chose Maths as the third most popular subject.
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PLSSS HELP IF YOU TURLY KNOW THISS
Answer:
This is an expression. To simplify it, we will combine like terms.
9d - 4p - 6 - 10d + 8 = (-9d - 10d) - 4p - 6 + 8 = -19d - 4p + 2
So the simplified expression is -19d - 4p + 2
