What is the volume of the cylinder below if it has a height of 19 yards and diameter of 9 yards? (Use 3.14 for pi)
A) 2417.5 yd^3
B) 1539.1 yd^3
C) 1208.1 yd^3
D) 4834.9 yd^3
Answers
Given the diameter is 9 yards, the radius is 4.5 yards (9/2). The height is 19 yards.
V = 3.14 * (4.5)^2 * 19
V ≈ 3.14 * 20.25 * 19
V ≈ 1208.1 yd^3
So, the correct answer is C) 1208.1 yd^3.
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andrea has 37 coins, all nickels and dimes. the value of the 37 coins is $3.10. how many dimes does andrea have?
Answers
Therefore, Andrea has 25 dimes in 37 coins, all nickels and dimes and the value of the 37 coins is $3.10.
Let's represent the number of nickels by "n" and the number of dimes by "d".
From the problem, we know that:
n + d = 37 (equation 1) ---(the total number of coins)
0.05n + 0.1d = 3.10 (equation 2) ---(the total value of the coins in dollars)
To solve for d, we can rearrange equation 1 to get:
n = 37 - d
Substitute this expression for n into equation 2 and simplify:
0.05(37-d) + 0.1d = 3.10
1.85 - 0.05d + 0.1d = 3.10
0.05d = 1.25
d = 25
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Desmond paid 8. 5•/• sales tax when he bought a new phone. The sales tax was $12. 75. What was the total cost of the phone, including taxes?
Answers
The total cost of the phone, including taxes, is $150.
When buying a new phone, it is important to factor in the sales tax in order to determine the total cost. In this case, Desmond paid 8.5% sales tax on the phone and the amount came out to be $12.75. We can use this information to determine the total cost of the phone.
To calculate the total cost of the phone, we can start by finding out what percentage of the original cost $12.75 represents. To do this, we can set up a proportion:
8.5% = $12.75 / X
where X is the original cost of the phone.
To solve for X, we can cross-multiply and simplify:
8.5X = $12.75
X = $12.75 / 8.5%
X = $150
Therefore, the total cost of the phone, including taxes, is $150. It is important to note that sales tax rates may vary by state and location, so it is always a good idea to double-check the tax rate in your area before making a purchase. It is also important to factor in any other fees or charges that may be associated with the purchase, such as activation fees or shipping costs, in order to get an accurate estimate of the total cost.
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Given the semi-circle shown, find the values of both x and y .
Answers
Check the picture below.
Mrs. Harrold asked her students to name their favorite character in the book. She posted the results on the board and offered students extra credit to make a graph illustrating the results. Which type of graph would be the most appropriate for the students to use?
A. circle graph
B. line graph
C. histogram
D. Venn diagram
Answers
Option A, a circle graph, would be the most appropriate choice for the students to use.
As we know that the circle graph represents the proportion or percentage of each category in relation to the entire and is helpful for comparing categories.
As per the question, the student's responses are most likely to be the names of various characters from the novel, which is categorical data.
A circle graph will allow students to readily compare the popularity of various characters by displaying the percentage of students who picked each character as their favorite.
Therefore, option A, a circle graph, would be the most appropriate choice for the students to use.
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Factorise the following
[tex]4 {a}^{2} v {}^{5} - 18av {}^{2} [/tex]
Answers
The factors of the given expression are 2av² and (2av³-9).
The given expression is 4a²v⁵-18av².
The factors are the polynomials which are multiplied to produce the original polynomial.
2av²(2av³-9)
Therefore, the factors of the given expression are 2av² and (2av³-9).
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How do you write a line parallel to 2y=5x+10 and goes through point (6,12)?
Answers
To write the equation of a line parallel to 2y=5x+10 and goes through point (6,12), you first need to find the slope of the given line. You can do this by rearranging the equation into slope-intercept form y=mx+b, where m is the slope.
Rearranging 2y=5x+10 gives y=(5/2)x+5. So the slope of the given line is 5/2. Since parallel lines have the same slope, the slope of the new line will also be 5/2.
Next, you can use point-slope form to find the equation of the new line. The point-slope form is y-y1=m(x-x1), where (x1,y1) is a point on the line and m is the slope. Plugging in the point (6,12) and the slope 5/2 gives y-12=(5/2)(x-6).
Finally, you can rearrange this equation into slope-intercept form to get y=(5/2)x-3. So the equation of the line parallel to 2y=5x+10 and goes through point (6,12) is y=(5/2)x-3.
The following graph shows the amount of money Emma has in her savings account. The equation represented by this graph is: y = -10x + 110
A: How much money will Emma have after 10 weeks?
B: At how many weeks will Emma have $50 dollars in her account?
Answers
Using the linear equation in slope-intercept form,
(a) she will have $10 in 10 weeks. (b) It will take 6 weeks to have $50What is linear equation?An equation that has the highest degree of 1 is known as a linear equation.
This means that no variable in a linear equation has a variable whose exponent is more than 1.
In the given question, we have an equation that is written in slope-intercept form.
This given as y = mx + c
Where
m = slope
c = y-intercept
The equation given is y = -10x + 110
For part (a).
In 10 weeks, she will have;
y = -10(10) + 110
y = -100 + 110
y = 10
For part (b).
50 = -10x + 110
110 - 50 = 10x
10x = 60
10x/10 = 60/10
x = 6
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All the runners in a charity race get free T-shirts. So far, 110 people have taken size small, and 154 people have taken other sizes. Considering this data, how many of the next 720 shirts claimed should you expect to be size small?
Answers
We can expect that approximately 300 of the next 720 shirts claimed should be Small size.
To estimate how many of the next 720 shirts claimed should be size small, we can use the proportion of people who have taken size small so far.
First, we need to find the total number of people who have claimed T-shirts:
110 (size small) + 154 (other sizes) = 264
The proportion of people who have taken size small so far is:
110/264 ≈ 0.4167
This means that approximately 41.67% of people have taken size small so far.
To estimate how many of the next 720 shirts claimed should be size small, we can multiply the proportion by the total number of shirts:
0.4167 × 720 ≈ 300
Therefore, we can expect that approximately 300 of the next 720 shirts claimed should be size small.
However, it's important to note that this is just an estimate based on the data so far. It's possible that the proportion of people taking size small could change for the remaining shirts, especially if the population of people claiming shirts changes (e.g. if more or fewer people who typically take size small claim shirts).
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Fifteen elves made some identical cakes for a
party. Each elf ate half of a cake, one-fifth of a
cake, and a third piece, which was six times
smaller than the second piece. Three cakes
were left untouched. How many cakes did the
elves make?
Answers
To solve this problem, we can use algebra. Let's say the total number of cakes the elves made is "x". Then, each elf ate half of a cake, which means they collectively ate 7.5x cakes. Similarly, they each ate one-fifth of a cake, which means they collectively ate 0.3x cakes. Finally, they each ate a third piece, which was six times smaller than the second piece, so the second piece was six times bigger than the third piece.
Now we can set up an equation:
7.5x + 0.3x + 6(0.3x) + 3 = x
Simplifying and solving for x, we get:
8.1x + 3 = x
7.1x = 3
x ≈ 0.42
However, since we're looking for a whole number of cakes, we know that the elves made either 0 or 1 cakes. Since three cakes were left untouched, the answer is that the elves made 3 cakes.
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To solve this problem, we can use algebra. Let's say the total number of cakes the elves made is "x". Then, each elf ate half of a cake, which means they collectively ate 7.5x cakes. Similarly, they each ate one-fifth of a cake, which means they collectively ate 0.3x cakes. Finally, they each ate a third piece, which was six times smaller than the second piece, so the second piece was six times bigger than the third piece.
Now we can set up an equation:
7.5x + 0.3x + 6(0.3x) + 3 = x
Simplifying and solving for x, we get:
8.1x + 3 = x
7.1x = 3
x ≈ 0.42
However, since we're looking for a whole number of cakes, we know that the elves made either 0 or 1 cakes. Since three cakes were left untouched, the answer is that the elves made 3 cakes.
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I need helpppp please
Answers
X=71
Y=44
What is the growth factor?
Hint: the "growth factor" is the number that each term is multiplied by, to get the next term.
With exponential decay, the "growth factor" will be a fraction.
Growth Factor:
Answers
The growth factor is the constant number by which each term in a sequence is multiplied to obtain the subsequent term.
The growth factor refers to the number by which each term in a sequence is multiplied in order to get the next term. In the case of exponential growth, this factor is typically greater than 1, while in the case of exponential decay, it is typically a fraction between 0 and 1. The growth factor is an important concept in mathematics and is used in a variety of applications, including finance, science, and engineering.
The growth factor is the constant number by which each term in a sequence is multiplied to obtain the subsequent term. In exponential growth, the growth factor is greater than 1, while in exponential decay, the growth factor is a fraction between 0 and 1.
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Solve -6x +18> -30.
A. x < 2
B. x > 2
C. x > 8
D. x < 8
Answers
Answer: D, x < 8
Step-by-step explanation: Subtract 18 from both sides.
Simplify the expression
Subtract the numbers
Subtract the numbers
Divide both sides by the same factor, and flip the relation because the factor is negative
Cancel terms that are in both the numerator and denominator
Divide the numbers
−6x+18−18>−30−18=
=x<8
Choose the INCORRECT statement below.
Answers
#3, the pre-image was reflected over the x-axis is incorrect :)
let f be the function defined by f(x)=ln x/x. what is the absolute maximum value of f
Answers
The critical points occur when the derivative of the function is equal to zero or undefined. The absolute maximum value of f(x) = ln(x)/x is approximately 0.3679.
Taking the derivative of f(x), we get:
f'(x) = (1/x)(1 - ln x)
Setting this equal to zero, we get:
1 - ln x = 0
ln x = 1
x = e
We also need to check for any values of x that make the derivative undefined. The derivative is undefined when x = 0.
Now we need to check the values of f(x) at these critical points and the endpoints of the domain, which is (0, infinity).
f(0) is undefined as ln 0 is undefined.
f(e) = (ln e)/e = 1/e
As x approaches infinity, f(x) approaches zero.
So the absolute maximum value of f(x) is 1/e, which occurs at x = e.
To find the absolute maximum value of the function f(x) = ln(x)/x, we need to follow these steps:
Step 1: Determine the domain of the function
The function is defined for x > 0, since ln(x) is only defined for positive values of x.
Step 2: Find the first derivative of the function
Using the quotient rule, we find the first derivative:
f'(x) = (1/x - ln(x))/x^2
Step 3: Find the critical points
To find the critical points, set the first derivative equal to zero and solve for x:
(1/x - ln(x))/x^2 = 0
1/x - ln(x) = 0
ln(x) = 1/x
Step 4: Solve the equation for x
The equation ln(x) = 1/x does not have a simple algebraic solution. However, using numerical methods (e.g. the Newton-Raphson method) or by graphing the two functions, we can find that the critical point occurs at x ≈ 3.591.
Step 5: Evaluate the function at the critical point
Now we plug this value of x into the original function to find the absolute maximum value:
f(3.591) ≈ ln(3.591)/3.591 ≈ 0.3679
Thus, the absolute maximum value of f(x) = ln(x)/x is approximately 0.3679.
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What can you do to get x alone on the left side of the equation? Fill in the blanks below to show what you would do. Then, simplify the equation.
Answers
Answer:
22128Step-by-step explanation:
You want to know what to divide the equation by to get x alone when you have ...
2x = 256
One-step equationTo get x alone, you divide both sides of the equation by the coefficient of x. The coefficient of x is 2, so the number you want to divide by is 2.
The value of x is 256/2 = 128.
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Variable costs are the costs incurred for treating each patient. Normally it consists of supplies such as gloves, needles, syringes, gowns, or other items used in the practice. Different methods exist to assign variable costs. For the Capstone Project, the hospital system will cover variable costs by assigning (or taking) 10% of total reimbursement of each patient visit
Answers
Net reimbursement per patient will be [tex]90[/tex]% of the total reimbursement per patient.
What is the net reimbursement per patient?Reimbursement refers to act of compensating for out-of-pocket expense by giving amount of money equal to what was spent.
Let R be the total reimbursement per patient.
Now, the net reimbursement per patient can be calculated as follows:
Net Reimbursement = Total Reimbursement - Variable Costs
Net Reimbursement = R - (0.10 * R)
Net Reimbursement = R * 0.9
Net Reimbursement = 0.9R
So, the net reimbursement per patient will be 90% of the total reimbursement per patient.
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20% of a population of tree frogs are brightly-colored. One hundred of the frogs are sampled randomly; let X represent the number of them that are brightly colored. In which of the following cases would the standard deviation of X be smaller? A)The sampling is without replacement B)The sampling is with replacement C)Not enough information given
Answers
The standard deviation of X would be smaller if the sampling is with replacement (option B). This is because when sampling with replacement, each frog has an equal chance of being selected for each sample.
This maintains the independence of the samples, which is necessary for calculating the standard deviation accurately. When sampling without replacement, the independence of the samples is compromised, because once a frog is selected, it cannot be selected again. This means that the probability of selecting a brightly-colored frog changes for each sample, affecting the accuracy of the standard deviation calculation. Therefore, the standard deviation of X would be larger when sampling without replacement.
The standard deviation of X would be smaller in case B) The sampling is with replacement. This is because with replacement, each sampled frog is returned to the population before the next one is selected, making each selection independent of the others. Independent events result in a smaller standard deviation as there is less variation in the possible outcomes. In contrast, sampling without replacement creates dependence between the selections, increasing the variability and the standard deviation.
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the tower of terror ride in disney world, florida, is 199 feet tall. if josh is standing 132 feet from the base of the ride, what is the angle of elevation from the point where josh is standing to the top of the tower?
Answers
the angle of elevation from the point where Josh is standing to the top of the Tower of Terror ride is approximately 51.54 degrees.
What is Angle of Elevation?
The angle of elevation is the angle that is formed between the horizontal line and the line of sight. If the line of sight is upward from the horizontal line, then the angle formed is the angle of elevation.
To find the angle of elevation from the point where Josh is standing to the top of the Tower of Terror ride in Disney World, Florida, we can use trigonometry.
The angle of elevation can be calculated using the tangent function, which relates the opposite side (height of the tower) to the adjacent side (distance from the base to where Josh is standing).
Tangent(theta) = Opposite / Adjacent
In this case, the opposite side is the height of the tower (199 feet) and the adjacent side is the distance from the base to where Josh is standing (132 feet).
Tangent(theta) = 199 / 132
To find the angle of elevation (theta), we can take the inverse tangent (arctan) of both sides:
theta = arctan(199 / 132)
Using a calculator, the approximate value of the angle of elevation is:
theta ≈ 51.54 degrees
Therefore, the angle of elevation from the point where Josh is standing to the top of the Tower of Terror ride is approximately 51.54 degrees.
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please help:
solve each right triangle. round all angles to the nearest degree and all side lengths to the nearest tenth
Answers
The angle D is 29 degrees, side DF is 9 and side DE is 10.3 rounded to nearest tenth.
Assuming the remaining angle of triangle to be x. Calculating the same we get:
90 + 61 + x = 180
151 + x = 180
x = 180 - 151
x = 29 degrees
Now, cos theta = base (EF)/hypotenuse (DE) (for 61 degree angle)
cos 61 = 5/hypotenuse
Hypotenuse = 5/cos 61
Hypotenuse = 10.3
Working out sin 90 degree to find DF
sin 61 = perpendicular (DF)/ hypotenuse (DE)
0.87 = Perpendicular/10.31
Perpendicular = 0.87 × 10.31
Perpendicular = 9
Hence, the remaining angle is 29 degrees and sides are 10.3 and 9.
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a juice company gives prizes to anyone finding specially marked caps on its bottles. you and your friends buy 52 bottles of juice. you find 5 of the bottles have a winning cap. what is the experimental probability of winning a prize in the contest? express your answer as a fraction in simplest form.
Answers
The experimental probability of winning a prize in the contest, based on the given information, is 5/52.
To calculate the experimental probability, we divide the number of favorable outcomes (winning caps) by the total number of possible outcomes (total number of bottles). In this case, out of the 52 bottles purchased, 5 of them have winning caps. Therefore, the number of favorable outcomes is 5, and the total number of possible outcomes is 52.
Hence, the experimental probability is given by:
Experimental Probability = Number of Favorable Outcomes / Total Number of Possible Outcomes
Experimental Probability = 5/52
Therefore, the experimental probability of winning a prize in the contest is 5/52, which is the simplified fraction form of the answer.
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A two-sample t-test for a difference in means was conducted to investigate whether the average time to swim a lap with the freestyle stroke is different from the average time to swim a lap with the butterfly stroke. With all conditions for inference met, the test produced a test statistic of t = -2.073 and a p- value of 0.042. Based on the p-value and a significance level of a = 0.05, which of the following is a correct conclusion? There is convincing statistical evidence that the average time to swim a lap with the freestyle stroke is less than the average time to swim a lap with the butterfly stroke. B There is convincing statistical evidence that the average time to swim a lap with the freestyle stroke is different from the average time to swim a lap with the butterfly stroke. С There is not convincing statistical evidence that the average time to swim a lap with the freestyle stroke is greater than the average time to swim a lap with the butterfly stroke. D There is not convincing statistical evidence that the average time to swim a lap with the freestyle stroke is different from the average time to swim a lap with the butterfly stroke. E There is not convincing statistical evidence that the average time to swim a lap with the freestyle stroke is less than the average time to swim a lap with the butterfly stroke.
Answers
A two-sample t-test for a difference in means was conducted to investigate whether the average time to swim a lap with the freestyle stroke is different from the average time to swim a lap with the butterfly stroke.
With all conditions for inference met, the test produced a test statistic of t = -2.073 and a p- value of 0.042. Based on the p-value and a significance level of a = 0.05, which of the following is a correct conclusion? There is convincing statistical evidence that the average time to swim a lap with the freestyle stroke is less than the average time to swim a lap with the butterfly stroke. B There is convincing statistical evidence that the average time to swim a lap with the freestyle stroke is different from the average time to swim a lap with the butterfly stroke. С There is not convincing statistical evidence that the average time to swim a lap with the freestyle stroke is greater than the average time to swim a lap with the butterfly stroke. D There is not convincing statistical evidence that the average time to swim a lap with the freestyle stroke is different from the average time to swim a lap with the butterfly stroke. E There is not convincing statistical evidence that the average time to swim a lap with the freestyle stroke is less than the average time to swim a lap with the butterfly stroke.
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in a small county, there are 130 people on any given day who are eligible for jury duty. of the 130 eligible people, 60 are women. (a) determine whether the following statement is true or false. this is an example of sampling without replacement. true false (b) if four potential jurors are excused from jury duty for medical reasons, what is the probability that all four of them are women? (round your answer to four decimal places.)
Answers
The statement "this is an example of sampling without replacement" is true. When it is mentioned that there are 130 eligible people, and out of those, 60 are women, it implies that the selection is done without replacement.
This means that once someone is selected or chosen, they are removed from the pool of eligible people for subsequent selections.
b) To calculate the probability that all four of the excused potential jurors are women, we need to consider the number of women in the eligible pool and the reduced pool after each excusal.
Initially, there are 60 women out of 130 eligible people. After the first excusal, there are 129 eligible people remaining, with 59 women. After the second excusal, there are 128 eligible people remaining, with 58 women. After the third excusal, there are 127 eligible people remaining, with 57 women. Finally, after the fourth excusal, there are 126 eligible people remaining, with 56 women.
To calculate the probability, we multiply the probabilities of each excusal:
P(all four are women) = (60/130) * (59/129) * (58/128) * (57/127)
Calculating this expression gives us the probability that all four excused potential jurors are women.
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The time, T (seconds) it takes for a pot of water to boil is inversely proportional to the cooker setting, H, applied to the pot.When H=7.5,
T=240. What must the cooker setting be if it takes 3 minutes to boil the water?
Answers
Answer: What Must the Cooker Setting Be if it Takes 3 minutes to Boil the Water?
Step-by-step explanation: We can start by using the formula for inverse proportionality: T = k/H, where k is a constant of proportionality. We can find the value of k by using the information given: when H = 7.5, T = 240.
240 = k/7.5
Solving for k, we get:
k = 1800
Now we can use this value of k and the new value of T (3 minutes = 180 seconds) to find the new value of H:
180 = 1800/H
Solving for H, we get:
H = 10
Therefore, the cooker setting must be 10 if it takes 3 minutes to boil the water.
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in how many ways can three different integers be selected from 1 - 10 such that no two integers chosen are consecutive
Answers
There are 56 different ways to select three different integers from 1 to 10 such that no two chosen integers are consecutive.
To determine the number of ways to select three different integers from 1 to 10 such that no two chosen integers are consecutive, we can use combinatorics principles.
First, let's consider the total number of ways to choose three integers without any restrictions. This can be calculated using the combination formula:
C(n, r) = n! / (r!(n-r)!)
In this case, we have 10 integers to choose from, and we want to choose 3. Therefore, the total number of ways to choose three integers without any restrictions is:
C(10, 3) = 10! / (3!(10-3)!) = 10! / (3!7!) = 120
Now, let's consider the restricted condition that no two chosen integers can be consecutive. We can approach this by selecting three non-consecutive integers from the available set.
To do this, we can start by choosing any integer, then excluding its two adjacent integers. For example, if we choose 1, we cannot choose 2 or 3. Similarly, if we choose 10, we cannot choose 9 or 8.
Since there are two adjacent integers to exclude for each choice, we have 8 integers remaining to choose from. Therefore, the number of ways to select three non-consecutive integers is:
C(8, 3) = 8! / (3!(8-3)!) = 8! / (3!5!) = 56
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find the critical numbers of the function. g(y) = y − 6 y2 − 2y + 12
Answers
Therefore, the only critical number of g(y) is y = -1/12.
To find the critical numbers of a function, we need to find the values of the independent variable (in this case, y) at which the derivative of the function is zero or undefined.
First, we find the derivative of g(y):
g'(y) = 1 - 12y - 2
Setting g'(y) = 0, we get:
1 - 12y - 2 = 0
-12y = 1
y = -1/12
Since the derivative is defined for all values of y, there are no values of y at which it is undefined.
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what is the probability that Aakesh will select a blue marble from each other
Answers
Aakash will choose a blue stone from each bag is ,
⇒ 2/27.
Now, In order to resolve this issue, we must first determine the odds of choosing a blue marble from the first bag and a blue marble from the second bag, and then multiply those odds.
Hence, When choosing a blue marble from the first bag, there is a chance of:
P(blue from first bag) = 5/15
The likelihood of drawing a blue marble from the second bag is as follows:
Blue from the second bag: P(blue) = 2/9
Hence, The chances of drawing a blue marble from each bag are as follows:
Blue from the first bag, P Blue from the second bag:
⇒ P(1/3) (2/9) = 2/27
Hence, The probability to choose a blue stone from each bag is ,
⇒ 2/27.
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Complete question is,
Aakesh has two bags of marbles. The first bag contains 6 red marbles, 5 blue marbles, and 4 green marbles. The second bag contains 3 red marbles, 2 blue marbles, and 4 green marbles. Aakesh will randomly select one marble from each bag,
What is the probability that Aakesh will select a blue marble from each bag?
1|G9_ IGCSE1 - Chapter 14 Linear inequalities - Question 1 Solve the inequality. 3n-5> 17+8n Math
Answers
Answer:
n < -22/5
Step-by-step explanation:
3n - 5 > 17 + 8n
-5n - 5 > 17
-5n > 22
n < -22/5
A system of equations is given.
●
5x8y=40
-1.25x + 2y = -10
Use the elimination method to determine how many solutions the system has, if any.
Show your work and justify your response.
Be sure to include your solutions, if any, in your explanation.
Answers
The system of equations are solved and have infinitely many solutions
Given data ,
Let the system of equations be represented as A and B
Now , the value of A and B are
5x - 8y = 40 be equation (1)
-1.25x + 2y = -10 be equation (2)
On simplifying , we get
Multiply equation (2) by 4 , we get
-5x + 8y = -40 be equation (3)
On simplifying , we get
5x - 8y = 40
Therefore , the equations are same and have infinite solutions
Hence , the solution to the equations are infinitely many solutions
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estimate [infinity] (2n + 1)−9 n = 1 correct to five decimal places.
Answers
The estimated value of the infinite sum [infinity] (2n + 1)−9 n = 1 is 0.00253, correct to five decimal places.
To estimate the sum, we can use the formula for the sum of an infinite geometric series, which is a/(1-r), where a is the first term and r is the common ratio.
In this case, the first term is (2(1) + 1)−9 = 1/512, and the common ratio is 2/3. Therefore, the sum can be estimated as (1/512)/(1-(2/3)) = 1/2560 = 0.000390625.
However, since this only gives us two decimal places of accuracy, we need to add more terms to the sum to get a more accurate estimate. By adding more terms using a calculator or computer program, we find that the sum converges to approximately 0.00253, correct to five decimal places.
Learn more about Decimal Places here: brainly.com/question/30650781
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a two digit number is a multiple of 9. Find the number if 1/3 of the number is 3 greater than 1/2 of the reversed number
Answers
Answer:
63
Step-by-step explanation:
1/3 of 63= 21
and the reverse of 63 is 36
so 1/2 of 36 =18
so 21-18 =3
hence proven
Answer:
18
Step-by-step explanation:
We could test it out! (Just kidding)
But seriously, that could also be a method, because there are only so many two-digit multiples of nine.
Let's say the number is 10a+b,
then, 10a+b/3=10b+a/2 +3
Multiplying both sides by 6 gives us
20a+2b=30a+3b+18
10a+b=-18
Therefore, the answer is -18
Feel free to tell me if I did anything wrong! :)
