Answer:
x = 56
First number = 56
Second number = 280
Third number = 156
Total 331
Step-by-step explanation:
alternatively, any vector may be expressed as the product of its magnitude and a unit vector with its same direction. enter an expression for the unit vector, d^d^, such that
A vector is a quantity that has both magnitude, as well as direction. A vector that has a magnitude of 1 is a unit vector. It is also known as Direction Vector.
Unit Vector is represented by the symbol ‘^’, which is called a cap or hat, such as: â. It is given by â = a / |a|
Where |a| is for norm or magnitude of vector a.
It can be calculated using a Unit vector formula.
Unit vectors are usually determined to form the base of a vector space. Every vector in the space can be expressed as a linear combination of unit vectors. The dot products of two unit vectors is a scalar quantity whereas the cross product of two arbitrary unit vectors results in third vector orthogonal to both of them. As explained above vectors have both magnitude (Value) and a direction. They are shown with an arrow.
And, â denotes a unit vector. If we want to change any vector in unit vector, divide it by the vector’s magnitude. Usually, xyz coordinates are used to write any vector.
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Equivalent Expressions:
Simplify each expression:
7(3x + 5y) = ?
Answer:
21x+35y=?
Step-by-step explanation:
multiply 3 by 7
multiply 5 by 7
you can't add different variables together
3. Put the integers in order from smallest to greatest. a. -41; 54; -31; -79; 57 b. 43; -54; 44; -55; -37; 22; 52; -39; -43; -56; 18
please help asp
50 points
a. -79, -41, -31, 54, 57
b. -56, -55, -54, -43, -39, -37, 18, 22, 43, 44, 52
In both cases, I have put the integers in order from smallest to greatest by comparing each number and placing them in the correct order. Starting with the smallest number and moving to the largest.
question the distribution of heights for adult men in a certain population is approximately normal with mean 70 inches and standard deviation 4 inches. which of the following represents the middle 80 percent of the heights?
The height that represents the middle 80 percent of the heights is 64.87 inches and 74.13 inches and this can be determined by using the given data.
Given :
The distribution of heights for adult men in a certain population is approximately normal with a mean of 70 inches and a standard deviation of 4 inches.
The heights that represent the middle 80 percent of the heights are:
P(-z < Z < z) = 0.80
P(Z < z) - P(Z < -z) = 0.80
P(Z < z) - (1 - P(Z < z)) = 0.80
2P(Z < z) = 1.80
P(Z < z) = 0.90
So, the value of z is 1.282.
Now, put the values of height as follows:
x1= 64.87
x2= 75.13
Therefore, the height that represents the middle 80 percent of the heights is 64.87 inches and 74.13 inches.
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Determine the number of ways a computer can randomly generate an integer between 10 and 20 (inclusive) that is a composite number. (A composite number is a number that is not a prime number.)
A. 3
B. 2
C. 6
D. 5
E. 7
The number of ways randomly an integer which is a composite number generated by a computer between 10 and 20 is equal to option c. 6.
As given in the question,
Total number of integer between 10 and 20 where 20 is inclusive = 10
Composite numbers between 10 and 20 where 20 is inclusive are :
12, 14, 15, 16, 18 ,20
Total number of ways an integer which is a composite number generated between 10 and 20( inclusive )
= 6
Therefore, the number of ways randomly an integer which represents a composite number generated by a computer between 10 and 20 ( inclusive ) is equal to option C. 6.
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1. (05.01 LC) Which data set could be represented by the boxplot shown? (1 point) boxplot with the minimum of 6, lower quartile value of 7, median of 9, upper quartile of 13, and maximum of 14. {6, 6, 8, 8, 9, 12, 13, 13, 14} {6, 6, 7, 9, 9, 12, 13, 14, 16} {6, 7, 8, 9, 10, 11, 12, 13, 14} {6, 7, 9, 9, 9, 12, 13, 14, 14}
A data set which could be represented by the boxplot shown include the following: A. {6, 6, 8, 8, 9, 12, 13, 13, 14}.
What is a box-and-whisker plot?In Mathematics, a boxplot is sometimes referred to as box-and-whisker plot and it can be defined as a type of chart that can be used to graphically or visually represent the five-number summary of a data set with respect to locality, skewness, and spread.
Based on the information provided about the given box-and-whisker plot, the five-number summary for the given data set include the following:
Minimum = 6.First quartile = 7.Median = 9.Third quartile = 13.Maximum = 14.By critically observing the box-and-whisker plots or boxplot (see attachment), we can logically deduce that it correctly represents this data set {6, 6, 8, 8, 9, 12, 13, 13, 14}.
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Please help!! Unit 7 lesson 7 geometry
Answer:
x=10
Step-by-step explanation:
The triangles CAB and PMB are similar. And since each side of CAB is 2 times longer than the side of PMB, we can write the equation:
3x=2(x+5)
3x=2x+10
x=10
Click an item in the list or group of pictures at the bottom of the problem and, holding the button down, drag it into the correct position in the answer box. Release your mouse button when the item is place. If you change your mind, drag the item to the trashcan. Click the trashcan to clear all your answers.
Solve the following inequality. Then place the correct answer in the box provided. Answer in terms of a mixed number.
3y + 5 < 10
The inequality is for the given term 3y + 5 < 10 is y < 5/3.
What is inequality?
The term "inequality" refers to a mathematical expression in which the sides are not equal to one another. In essence, an inequality compares any two values and demonstrates that one value is less than, greater than, or equal to the value on the other side of the equation.
Less than (<), greater than (>), less than or equal (≤), greater than or equal (≥), and the not equal symbol (≠) are the inequality symbols.
Inequalities are used to compare numbers and identify the range (or ranges) of values that satisfy the requirements of a given variable.
Given to solve the inequality
3y + 5 < 10
3y < 10 - 5
3y < 5
y < 5/3
and
y ∈ (−∞, 3/5)
Thus, the inequality is for the given term 3y + 5 < 10 is y < 5/3.
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PLEASE HELP FAST!! THANKS SO MUCH (file attached)
Let x be the total amount of money .
Emily's share =(1/3)x
Given Emily's share = 45000
so (1/3)x = 45000
x = 135000
Eric's share = (2/5)x
Eric puts 75% of his share in bank
= (2/5)*x*0.75
= (2/5)*135000*0.75
= 40500
Cat's share
= 1-([(1/3)*x] + [(2/5)*x])
= (4/15)*x
= (4/15)*135000
= 36000
Which figure is a quadrilateral?
Answer: Figure 2 (The rectangle)
Hope this helps :)
Step-by-step explanation:
Quadrilaterals are shapes that have 4 (connected) sides
Answer:
the second figure
Step-by-step explanation:
Quadrilaterals have a maximum and minimum of four
In 2007, a principal of $4700 was invested at 5.25% Interest, compounded annually.
Let t be the number of years since 2007. Let y be the value of the investment, in dollars.
Write an exponential function showing the relationship between y and t.
The formula for calculating the future value of an investment compounded annually is:
FV = P(1 + r)^t
where:
FV = future value of the investment
P = principal or initial investment
r = annual interest rate as a decimal
t = number of years the investment is held
In this problem, the principal is given as $4700, the annual interest rate is given as 5.25%, and the time is measured in years since 2007.
So we can write the function as:
y = 4700(1 + 0.0525)^t
In this function, y represents the future value of the investment (in dollars) and t represents the number of years since 2007.
The above function can be written in the form A or A B , where A and B are constants or variable expressions that have no variables in common.
A = 4700
B = 1 + 0.0525
y = A*B^t
So the exponential function for the problem is:
y = 4700*(1+0.0525)^t
describe all the x -values at a distance of 15 or less from the number 6 . enter your answer in interval notation.
The set of all x-values at a distance of 15 or less from the number 6 can be represented in interval notation as (-9, 21).
Interval notation is a way of expressing a set of numbers in a concise and easily readable format. In this case, we are looking for all the x-values that are a distance of 15 or less from the number 6. To find these values, we need to consider the range of numbers that are 15 units away from 6 in both the positive and negative directions.
On the negative side, 6 - 15 = -9, so any x-value that is greater than -9 and less than 6 is within the desired range.On the positive side, 6 + 15 = 21, so any x-value that is greater than 6 and less than 21 is also within the desired range.So, in interval notation, the set of all x-values at a distance of 15 or less from 6 is written as (-9, 21) which means all the values between -9 and 21 (not including -9 and 21)
Key points:
Interval notation uses parentheses to indicate that the endpoint is not included in the interval, and square brackets to indicate that the endpoint is included.The interval is always written in increasing order, with the lower endpoint first and the upper endpoint second.Interval notation is commonly used in mathematics, particularly in calculus and analysis, to describe the domain or range of a function.Learn more about Interval notation here:
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What length of 2-in. by 4-in. material will be required to make six bench legs each 28 1/4 in. long?
Material will be required to make six bench legs each 28 1/4 inch is 169.5 inches.
What is Fraction?
An element of a whole is a fraction. The number is represented mathematically as a quotient, where the numerator and denominator are split. Both are integers in a simple fraction. A fraction appears in the numerator or denominator of a complex fraction. The numerator of a proper fraction is less than the denominator.
What is Decimal?
The accepted method for representing both integer and non-integer numbers is the decimal numeral system. It is the expansion of the Hindu-Arabic numeral system to non-integer values. Decimal notation is the term used to describe the method of representing numbers in the decimal system.
The simple solution is to convert 28 1/4 to a decimal and be cautious about converting it back to a fraction if necessary.
28 1/4=28.25
You need Six of them.
1 leg measures28.25 inches.
6 legs = x
Cross multiply 1/6 = 28.25 / x
x = 6* 28.25
x equals 169.5 inches
How many feet is that exactly? To calculate the amount of feet, divide by 169.5 /6=28.25 feet.
2 by 4s are typically 6 feet long. Unfortunately, you will need two of these for two more for 6 feet.
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Question 7
Find the measure of each angle indicated
Answer:
<Q = 93
Step-by-step explanation:
The sum of the angles of a triangle is 180
<Q + <P + < R = 180
<Q + 51+36 = 180
<Q+87=180
<Q = 180-87
<Q = 93
a) The transportation cost of 35 kg of potatoes is Rs 105. (i) What is the transportation cost of 2.5 quintals of potatoes at the same rate for the same distance? (ii) How many quintals of potatoes can be transported for Rs 1,500 at the same rate for the same distance?
(i) 1 quintal = 100 kg
2.5 quintals = 2.5100 = 250 kg
Transportation cost of 250 kg of potatoes = 105(250/35) = Rs 750
we are asked to find the transportation cost of 2.5 quintals (250 kg) of potatoes at the same rate as 35 kg of potatoes. We know that the transportation cost for 35 kg is Rs 105.
To find the cost for 250 kg, we use the proportion of 35/105 = x/750. By cross multiplying we get x= 250*105/35= 750. So the transportation cost for 250 kg of potatoes is Rs 750.
(ii) Transportation cost of 1 quintal of potatoes = 105*(100/35) = Rs 300
Transportation cost of 1 quintal of potatoes = Rs 1500 / Rs 300 = 5 quintals.
we are asked to find how many quintals of potatoes can be transported for Rs 1,500 at the same rate as 35 kg of potatoes. We first find the transportation cost of 1 quintal of potatoes by using the proportion of 35/105 = x/300.
So x = 100, thus the transportation cost of 1 quintal of potatoes is Rs 300. So we can transport 1 quintal of potatoes for Rs 300. Dividing 1500 by 300, we get 5 quintals.
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5. An association of coffee producers has estimated that 50% of adult workers drink coffee at least occasionally while on the job. Given this estimate:
a) For a randomly selected group of 4 adult workers, what is the probability that no more than 3 of them drink coffee at least occasionally while on the job?
For a randomly selected group of 4 adult workers, the probability that no more than 3 drink coffee at least occasionally while on the job is 37.5%.
What is the probability?Probability refers to the chance, odds, or likelihood that an expected outcome is obtained when there are many possible events.
Probability may be 100% certain, depicted as 1, or 100% uncertain, expressed as zero.
Other values of probability lie between one and zero as fractional values that can be depicted as percentages, decimals, or fractions.
The estimated percentage of adults who at least occasionally drink coffee = 50%
Random sample = 4
The number of adult workers from 4 who occasionally drink coffee on the job = 3
The probability of 3 out of 4 workers drinking coffee on the job = 37.5% (3/4 x 50%)
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how would you graph functions like these in a graph?
Answer:
Step-by-step explanation:
f(x) is basically another term for y, and you already have your x values, so you can just plot the points and draw lines through them :)
For drawing graphs we have two points (x-axis and y-axis ) to loacte exact location on the graph.
X-axis point to locate on the graph parallel distance from y-axis.
Y-axis point to locate on the graph parallel distance from x-axis.
Take the y-coordinates as the f(x) and points of x-coordinates as the value of x.
1.Write down the coordinates of x-axis and y-axis
y=-3x+1
(X-axis,Y-axis)=A(-2,7),B(-1,4),C(0,1),D(1,-2),E(2,-5)
2.Write down the coordinates of x-axis and y-axis
y=-x²+5
(X-axis,Y-axis)=A(-2,1),B(-1,4),C(0,5),D(1,4),E(2,1)
3.Write down the coordinates of x-axis and y-axis
y=[tex]2^{x}[/tex]
(X-axis,Y-axis)=A(-2,0.25),B(-1,0.5),C(0,1),D(1,2),E(2,4)
These are the graphs linke images
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Please help (Geometry)
PICTURE INCLUDED
A parabolic tunnel has a width of 20 feet and a height of 12 feet at the center. Find the cross-sectional area of the parabolic tunnel.
A. Illustrate the parabolic tunnel. Show the measurements.
A parabolic tunnel has the shape of a parabola in cross-section, with one axis being symmetric (the width) and the other axis being the height at the center. To find the cross-sectional area of the parabolic tunnel, we can use the formula for the area of a parabola:
Area = (1/2) x Width x Height
Given that the width of the parabolic tunnel is 20 feet and the height at the center is 12 feet, we can substitute these values into the formula:
Area = (1/2) x 20 x 12 = 120 square feet.
So the cross-sectional area of the parabolic tunnel is 120 square feet.
Write a slope-intercept equation for a line passing through the point (4, -3) that is parallel to the line 4x + 5y = 9. Then write a second
equation for a line passing through the point (4, - 3) that is perpendicular to the line 4x + 5y = 9
Answer:
Parallel Line: [tex]y=-\frac{4}{5}x+\frac{1}{5}[/tex]
Perpendicular Line: [tex]y=\frac{5}{4}x-8[/tex]
Step-by-step explanation:
Perpendicular Lines:Perpendicular lines have a slope that is the negative reciprocal of each other. So for example if one line has a slope of: [tex]\frac{a}{b}[/tex], where "a" and "b" are just some constants, then a perpendicular line would have a slope of: [tex]-\frac{b}{a}[/tex], so the slope fraction is just flipped and it's the opposite sign.
Parallel Lines:Parallel lines never intersect meaning they will have the same slope, since as one goes to the right one and up or down some amount, the only way for the other line to never intersect is to also go up or down by the same amount, which is essentially the slope. The only other condition is that parallel lines must have different y-intercepts, otherwise they have the same slope and y-intercepts meaning they're just the same line and instead of never intersecting they actually intersect at infinitely many points.
Slope-Intercept Form:The slope-intercept form is especially useful as we can simply look at it and determine the slope and y-intercept, hence the name slope-intercept form. We want to convert into this form to determine the slope of the equation given to us so we can find the perpendicular and parallel lines.
Solving the Problem:We're given the equation in standard form:
[tex]4x+5y=9[/tex]
We want to convert this into slope-intercept form, which we can do by isolating the y variable. We want to get rid of the 4x term on the left side by subtracting 4x, and we want to do this to both sides to maintain equality:
[tex]4x-4x+5y=9-4x[/tex]
Simplify:
[tex]5y=-4x+9[/tex]
Now we want to get rid of the coefficient of 5 from the left side, and this coefficient is just multiplication so to cancel out multiplication, we divide, specifically by 5 in this case, and on both sides to maintain equality:
[tex]\frac{5y}{5}=\frac{-4x+9}{5}[/tex]
Simplify:
[tex]y=-\frac{4}{5}x+\frac{9}{5}[/tex]
Now we know the slope is: [tex]-\frac{4}{5}[/tex]
Finding a Perpendicular Line:For this we simplify find the negative reciprocal so we flip the fraction and "flip" the sign, or in other words if it's negative it becomes positive, if it's positive it becomes negative so: [tex]-\frac{4}{5}\to \frac{5}{4}[/tex]
We can represent the general equation of a perpendicular line in slope-intercept form: [tex]y=\frac{5}{4}x+b[/tex], where "b" is some constant number. We're given that it passes through the point (4, -3) which we can plug in as (x, y) to solve for that value "b"
[tex]-3=\frac{5}{4}(4)+b[/tex]
Simplify on the right side
[tex]-3=5+b[/tex]
Subtract 5 from both sides
[tex]-8=b[/tex]
So now we have the perpendicular line equation: [tex]y=\frac{5}{4}x-8[/tex]
Finding a Parallel Line:For this we don't have to do anything to the slope, since for parallel lines the slope is the same, so we know the slope is: [tex]-\frac{4}{5}[/tex] and we can plug this into the slope-intercept form to get a general equation for a parallel line: [tex]y=-\frac{4}{5}x+b\text{ where }b\ne\frac{9}{5}[/tex]
Since we're given that it passes through the point (4, -3) we can plug this in as (x, y) to find a definitive equation.
[tex]-3=-\frac{4}{5}(4)+b[/tex]
Simplify on the right side:
[tex]-3=-\frac{16}{5}+b[/tex]
Rewrite the left side to have a denominator of 5:
[tex]-\frac{15}{5}=-\frac{16}{5}+b[/tex]
Add 16/5 to both sides:
[tex]\frac{1}{5}=b[/tex]
So now let's plug this into a general equation we had above to get:
[tex]y=-\frac{4}{5}x+\frac{1}{5}[/tex]
John ate x ounces of steak. Kate ate 2/3 less . What would a diagram look like to represent this 
It is a structured visual representation of simplified thoughts, ideas, structures, relationships, statistical data, anatomy, etc. It can be used in any part of human activity to clarify a topic or provide an example of a topic.
What are the 4 types of charts?Mind maps, flowcharts, fishbone diagrams, hierarchy/org charts, and SWOT analysis charts are the most common types of diagrams covered in this article. It is a structured visual representation of simplified thoughts, ideas, structures, relationships, statistical data, anatomy, etc. It can be used in any part of human activity to clarify a topic or provide an example of a topic.
A diagram that shows the parts of an object and their interrelationships is called a diagram.
It is a structured visual representation of thoughts, ideas, structures, relationships, statistical data, anatomy, etc. It's a simplification. It can be used in any part of human activity to clarify a topic or provide an example of a topic.
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If $5,000.00 is invested at 17% annual simple interest, how long does it take to be worth $21,150.00.
It will take
years (round to the nearest whole).
To find the number of years it takes for an investment to grow to a certain value at a certain interest rate, you can use the formula:
n = (future value - principal) / (principal * interest rate)
Where:
n = number of years
future value = the final value of the investment
principal = the initial amount invested
interest rate = the annual interest rate as a decimal
Plugging in the given values:
n = (21150 - 5000) / (5000 * 0.17)
n = 16.65
Rounding to the nearest whole number, it would take approximately 17 years for the investment to be worth $21,150.00.
antarctica is roughly semicircular, with a radius of 2000 km (fig. 1-5). the average thickness of its ice cover is 3000 m. how many cubic centimeters of ice does antarctica contain? (ignore the curvature of earth.)
The volume of ice in Antarctica can be calculated by first determining the area of the semicircle.
This can be done by multiplying the radius (2000 km) of the semicircle (2πr2) by half, resulting in a total area of 3,14159265 x (2 x 20002) = 628318530 km2. To calculate the volume of ice, this area must be multiplied by the average thickness of the ice cover (3000 m). This results in a total volume of 18,8547595 x 1012 cm3 of ice in Antarctica. To put this into perspective, this is the equivalent of roughly 6.5 billion Olympic swimming pools of ice.The volume of ice in Antarctica can be calculated by first determining the area of the semicircle.
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This is due in 20 minutes, please help me.
Here we are interested in finding the slope of the line. From the given graph we can see that that the line passes through points (-6,0) and (0,3) . We know that slope can be calculated by ,
[tex]\longrightarrow slope \ (m)=\dfrac{y_2-y_1}{x_2-x_1} =\tan\theta =\dfrac{rise}{run}[/tex]
[tex]\longrightarrow m =\dfrac{y_2-y_1}{x_2-x_1}\\[/tex]
[tex]\longrightarrow m =\dfrac{0-3}{-6-0}\\[/tex]
[tex]\longrightarrow m =\dfrac{-3}{-6}\\ [/tex]
[tex]\longrightarrow m =\dfrac{1}{2}=0.5[/tex]
And we are done!
Kareem paid $29.96 for a basketball. The sales tax for his purchase was 7%. What was the original cost of the basketball?
N(t) = 25t + 150 for 0<=t<6, (200 + 80t)/(2 + 0.05t) for t>=8The number of fish in a pond at time t years is modeled by the function N defined above, where f is a continuous function such that f(0)=80.a) Find limt→[infinity]N(t). Explain the meaning of limt→[infinity]N(t) in the context of the problem.
a) limit→[infinity]N(t) = limit→[infinity](200 + 80t)/(2 + 0.05t) = 200.
What is a limit in plain English?
A limit in mathematics is a point at which a function approaches the output for the specified input values. Calculus and mathematical analysis depend on limits, which are also used to determine integrals, derivatives, and continuity.
This means that as the number of years (t) approaches infinity, the number of fish in the pond (N(t)) approaches a limit of 200. In other words, as t gets larger and larger, the number of fish in the pond will get closer and closer to 200, but will never exceed 200. In the context of the problem, this means that the pond has a carrying capacity of 200 fish and that the population of fish in the pond will eventually stabilize at this level, regardless of the initial population.
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Compute the perimeter of the shape shown.
A) 17 cm
B) 19 cm
C) 13 cm
D) 15 cm
Answer:
D. 15
Step-by-step explanation:
4+5+6=
4+5=9..
9+6=
15.
Thus, Answer is D. 15
Answer:
Your answer is: D)15cm
Step-by-step explanation:
To find the perimeter add all of the side together.
6+4+5=15
Which of the following shows 8x³y + x² - 14z - 2 + 5y2x written in standard form?
-14z + 8x³y + 5y²x - 2 + x²
8x³y + 5y²x + x² - 14z - 2
8x³y + x² + 5y²x - 14z - 2
x²-2-14z + 5y²x + 8x²y
Answer:
The correct answer is 8x³y + 5y²x + x² - 14z - 2.
Step-by-step explanation:
This is in standard form because it is a polynomial with the terms arranged in descending order of their exponents, with the coefficient of each term being positive.
The exponent of x is 3, the exponent of y is 2, the exponent of z is 1, and the constant is -2.
Let x and y be functions of time t such that the sum of x and twice y is constant. Which of the followingequations describes the relationship between the rate of change of with respect to time and the rate ofchange of with respect to time?A) dx/dt=2dy/dtB) dx/dt=-2dy/dtC) 2dx/dt+dy/dt=0D) dx/dt + 2dy/dt=K, where K is a function of t
The equation describes the relationship between the rate of change of with respect to time and the rate of change of with respect to time is dx/dt -2 dy/dt
What are functions?In mathematics, a function is an expression, rule, or law that establishes the relationship between two variables (the dependent variable). Mathematics is rife with functions, and the sciences depend on them for constructing physical relationships. One input results in one output when using a function, which is a type of rule. by Alex Federspiel, the photo's author. Here, y=x2 serves as an illustration. A single output for y results from any input for x. Since x is the input value, we would state that y is a function of x.Well x + 2y = k (constant)
differentiate through wrt t
dx/dt + 2 dy/dt = 0
so dx/dt -2 dy/dt (so B)
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Larry starts at the bottom of a long staircase. He climbs exactly of the stairs. Then, he goes back down exactly 2/3 of the way to the bottom. From that spot, he climbs exactly of the way to the top. Finally, from there he 1/2 2/3 climbs 6 stairs to reach the top. How many stairs are in the staircase?
There are a total of 27 steps on the staircase.
What are Fractions?Fractions are numbers which are of the form a/b where a and b are real numbers. This implies that a parts of a number b.
Let x be the total number of steps in the staircase.
Larry climbs exactly 2/3 of the stairs.
Number of steps Larry climbed = 2x/3
She goes back exactly 1/2 of the way to the bottom.
Number of steps returned = (2x/3) (1/2) = 2x/6 = x/3
She is at x/3 steps from the bottom.
From that spot, she climbs exactly 2/3 of the way to the top.
Remaining steps to the top = x - x/3 = 2x/3
Number of steps Larry climbed = 2/3 of the way to the top = (2/3)(2x/3) = 4x/9
So we get,
x/3 + 4x/9 + 6 = x
x - x/3 - 4x/9 = 6
x - 7x/9 = 6
2x/9 = 6
2x = 54
x = 27
Hence there are 27 steps in the staircase.
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The complete question is as follows :
Lara starts at the bottom of a long staircase. She climbs exactly 2/3 of the stairs. Then, she goes back down exactly 1/2 of the way to the bottom. From that spot, she climbs exactly 2/3 of the way to the top. Finally from there, she climbs 6 stairs to reach the top. How many stairs are in the staircase?
