Answer:
Part A)
In interval notation:
\((1, 5)\)
Or, as an inequality:
\(1<x<5\)
Part B)
\(x\approx 3.5\)
Part C)
V(x) is increasing for 1 < x < 3.5 and decreasing for 3.5 < x < 5.
Step-by-step explanation:
The building boxes have lengths represented by (x + 1), widths by (5 - x), and heights by (x - 1).
Part A)
Since they are side lengths, they must be positive. In other words:
\(\displaystyle x+1>0, 5-x>0\text{ and } x-1>0\)
Solving for each inequality yields:
\(x>-1, x<5,\text{ and } x>1\)
We can eliminate the first inequality. Thus, our compound inequality is:
\(1<x<5\)
So, the reasonable domain for V(x) will be all values greater than one and less than five.
In interval notation:
\((1, 5)\)
Or as an inequality:
\(1<x<5\)
Part B)
We only need to look at the part of the graph within our domain.
For 1 < x < 5, we can see that its maximum is 17.
This occurs around x = 3.5.
Part C)
Again, we only need to look at the part of the graph within our domain.
As we can see, starting from x = 1 to x = 3.5 (approximately), our function is increasing (i.e. sloping upwards).
From x = 3.5 (approximately) and ending at x = 5, our function is decreasing.
Therefore, V(x) is increasing for 1 < x < 3.5 and decreasing for 3.5 < x < 5.
Answer:
Part A)
In interval notation:
(1, 5)
Or, as an inequality:
1<x<5
Part B)
x ≈ 3.5
Part C)
V(x) is increasing for 1<x<3.5 and decreasing for 3.5<x<5
\(\color{yellow}{}\)
Please help me with this question.
Answer:
Monica = 48.50
Samuel = 24.25
Kara = 17.25
Step-by-step explanation:
First you write equations as you are reading the text:
m = 2s ("Monica earned twice as much as Samuel")
s = k+7 ("Samual earned 7 more than Kara")
m = 48.50
Next, you convert these equations to solve for s and k respectively.
So, if m=2s, then s=m/2:
s = m/2 = 24.25
Likewise, if s=k+7, then k=s-7
k = s-7 = 17.25
The difference between greatest and least is 48.50 - 17.25 = 31.25
Dilate point D by a scale factor of 3. what would the coordinate of D’ be (if that plane is quadrant 1)
The coordinate of D’ after the dilation is (-6, 0)
What would the coordinate of D’ after dilationFrom the question, we have the following parameters that can be used in our computation:
D = (-2, 0)
Scale factor = 3
The coordinate of D’ after the dilation is calculated as
D' = D * Scale factor
Substitute the known values in the above equation, so, we have the following representation
D' = (-2, 0) * 3
Evaluate
D' = (-6, 0)
Hence, the image is (-6, 0)
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The following variable (X) represents the number of coupons used over a 6 month period by a sample of 11 shoppers:
74, 56, 64, 57, 64, 40, 55, 64, 59, 67, 50.
Use this data to compute:
The mean, the median, the mode, the range, the variance, the standard deviation, the sum of the values of (X), and the sum of the squared deviations of each value of (X) from the mean. In addition, please explain what information is provided to us about this variable by your answers to: (1) the sample mean and (2) the sample standard deviation.
really need answer to last part that is (1) and (2)
We can compute various descriptive statistics such as the mean, median, mode, range, variance, standard deviation, sum of values, and sum of squared deviations.
The sample mean, also known as the average, provides information about the central tendency of the variable X. It represents the typical or average number of coupons used by the shoppers in the sample. In this case, calculating the mean of the given data would provide an estimate of the average number of coupons used over the 6-month period.
The sample standard deviation measures the dispersion or variability of the data points around the mean. It indicates how much the individual observations deviate from the mean value. A higher standard deviation implies greater variability, indicating a wider range of coupon usage among the shoppers in the sample.
By computing the sample mean and standard deviation, we can understand the average coupon usage and the degree of variability in the data. These statistics help us summarize and interpret the characteristics of the variable X, allowing us to make comparisons, identify outliers, assess the spread of the data, and make inferences about the larger population from which the sample was drawn.
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Show that the trajectory of an object thrown at certain angle with the horizontal is a parabola.
The equation of the trajectory which can be described using the equations for projectile motion is; y(t) = x·tan(θ) - g·x²/(2·v₀²·cos²(θ)), which is a quadratic equation with a path of a parabola
What is projectile motion?Projectile motion is the motion of an object that is projected in the air under the influence of gravitational attraction.
Let θ represent the angle at which the path of the object makes with the horizontal, and let v₀ represent the velocity of the object. The path of the object can be described using the equations of the motion of a projectile, as follows;
Horizontal component of the velocity, v₀ₓ = v₀ × cos(θ)
Vertical component of the velocity, \(v_{0y}\) = v₀ × sin(θ)
The horizontal motion of the object is therefore;
x(t) = v₀ₓ × t = v₀ × cos(θ) × t
The vertical motion which is under the influence of gravity is; y(t) = \(v_{0y}\) × t - (1/2) × g × t²
v₀ × sin(θ) × t - (1/2) × g × t²
The horizontal component indicates that we get;
t = x/(v₀ × cos(θ))
Plugging in the above expression for t into the equation for y(t), we get;
y(t) = \(v_{0y}\) × t - (1/2) × g × t² = \(v_{0y}\) × x/(v₀×cos(θ)) - (1/2) × g × (x/(v₀×cos(θ)))²
\(v_{0y}\) × x/(v₀×cos(θ)) - (1/2) × g × (x/(v₀×cos(θ)))² = (v₀ × sin(θ)) × x/(v₀×cos(θ)) - (1/2) × g × (x/(v₀×cos(θ)))²
(v₀ × sin(θ)) × x/(v₀×cos(θ)) - (1/2) × g × (x/(v₀×cos(θ)))² = x·tan(θ) - g·x²/(2·v₀×cos(θ))²
The equation, y = x·tan(θ) - g·x²/(2·v₀×cos(θ))², is a quadratic equation, which is an equation of a parabola, therefore, the trajectory of an object thrown at an angle to the horizontal is a parabola.
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Given the n™ term of a number sequence, write down the first three terms of the sequence..... n² - n
Given the n™ term of a number sequence, the first three terms of the sequence are 0, 2 and 6
How to write down the first three terms of the sequence.?The sequence is given as:
n^2 - n
To write down the first three terms of the sequence, we set n =1, 2 and 3
So, we have:
When n = 1
n^2 - n = 1^2 - 1
Evaluate
n^2 - n = 0
When n = 2
n^2 - n = 2^2 - 2
Evaluate
n^2 - n = 2
When n = 3
n^2 - n = 3^2 - 3
Evaluate
n^2 - n = 6
Hence, the first three terms of the sequence are 0, 2 and 6
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Answer fast
Which of the following is used to identify outliers in a set of data?
1.5(IQR)
1.5(range)
2(mean)
2(median)
The Interquartile range i.e 1.5 (IQR) is used to identify outliers in a set of data which is the correct answer would be option (A).
What is the Interquartile range (IQR)?We may build up a "fence" outside of Q1 and Q3 by using the Interquartile range (IQR) method of spotting outliers. Outliers are values that fall outside of this range.
To construct this barrier, we take 1.5 times the IQR, deduct it from Q1, and add it to Q3. This provides us with the lowest and maximum fence posts against which we will compare each observation.
Outliers are observations that are greater than 1.5 IQR below or above Q1. Minitab's default strategy for identifying outliers is this.
Therefore, the Interquartile range (IQR) is used to identify outliers in a set of data.
Hence, the correct answer would be option (A).
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How many solutions does the equation have? -10(x - 1) = 10 - 10x *
O Zero Solutions
O 1 Solution
O Infinite Solutions
Answer:
infinite
Step-by-step explanation:
it results in 10-10x=10-10x if you simplify
can also be simplified more into x=x
but we already know x has to equal x.
The sum of two consecutive numbers is 25. What is the largest of the consecutive numbers? Type a numerical answer in the space provided.
In a case whereby the sum of two consecutive numbers is 25 the largest of the consecutive numbers is 13.
How can the the largest of the consecutive numbers be calculated?Given that sum of two consecutive numbers is 25 , ans we were required to locatye the largest of the consecutive numbers. The we can represent the consecutive numbers as x and x+1. According to the problem, the sum of these two consecutive numbers is 25:
x + (x+1) = 25
Simplifying the left side of the equation:
2x + 1 = 25
2x = 24
Dividing both sides by 2:
x = 12
So the first consecutive number is 12. The second consecutive number is 12 + 1 = 13. Therefore, the largest of the consecutive numbers is 13.
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HELP QUICKLY
what is x
2.5/x = 10/12
PLS HELP ASAP
Answer:
x = 3
Step-by-step explanation:
2.5/x = 10/12
Multiply both sides by x
2.5 = 10/12x
Divide both sides by 10/12
3 = x
What is the MEAN of the data set below?(0.2,0.8,0.4,0.3,0.4,0.4,0.4,0.8,1.3)
Answer:
5/9
Step-by-step explanation:
we add all of the values and divide by the total number in this case 9, all of them add to make 5 so we do 5÷9 to get 5/9
What is 127 kg to lbs
Answer:
279.987
this is da answer
Step-by-step explanation:
There are 280.035 lbs in 127 kilograms. The answer is obtained by applying the unit conversion.
What is unit conversion?
A unit conversion is used to express the same property in a different unit of measurement. For instance, you could use minutes instead of hours to represent time or feet instead of miles to indicate distance. It commonly occurs when measurements are provided in one system of units, such as feet, but are required in a different system, such as chains.
Now,
we have been given 127 kilograms which are to be converted into pounds and to be represented in lbs.
We know that 1 kilogram = 2.205 lbs (approx)
Therefore,
⇒127 kilograms = 127 * 2.205
⇒127 kilograms = 280.035 lbs
Hence,
There are 280.035 lbs in 127 kilograms.
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1/4x+1=2/3x+1/2solve for x
Given the equation:
\(undefined\)Work out the area of a rectangle with base,
b
= 15mm and height,
h
= 12mm
Answer:
15x12=180mm
Step-by-step explanation:
Please solve. I think u solve for X
Answer:
x=2.1
Step-by-step explanation:
collect like terms 2.4x+5.8x=8.2x
move the terms to the left side and change its sign to -8.2x
move the constant(-3.28) to the right and change its sign to 3.28
equation should now be 9x-8.2x=-1.6+3.28
next you're going to do 9x-8.2x=0.8x
then -1.6+3.28=1.68
divide both sides of the equation by 0.8
x=2.1 is your final answer
A book was bought for $40 and later sold at profit of 25%. What was the selling price of the book?
Answer:
The book was 50 dollars
Step-by-step explanation:
0.25% x 40 dollars = $10
10 + 40 (the original amount) = $50
Answer:
$50
Step-by-step explanation:
25% of $40 is $10 dollars. so a book sold with 25% profit is $50
In a 45-45-90 triangle, if the length of one leg is 4, what is the length of the hypotenuse?
Answer: \(4\sqrt{2}\) (choice C)
Explanation:
In a 45-45-90 triangle, the hypotenuse is found through this formula
\(\text{hypotenuse} = \text{leg}\sqrt{2}\)
We could also use the pythagorean theorem with a = 4, b = 4 to solve for c.
\(a^2+b^2 = c^2\\\\c = \sqrt{a^2+b^2}\\\\c = \sqrt{4^2+4^2}\\\\c = \sqrt{2*4^2}\\\\c = \sqrt{2}*\sqrt{4^2}\\\\c = \sqrt{2}*4\\\\c = 4\sqrt{2}\\\\\)
Alexa has 8 cubic feet of potting soil and 3 flower pots. she wants to put the same amount of soil into each pot. how much soil will she put into each flower pot.
Alexa needs to put approximately 2.67 cubic feet of soil in each flower pot.
What is division ?In mathematics, division is the process of dividing a given amount into equal parts. For instance, a group of 20 individuals can be divided into four groups of five people each, or five groups of four people each, and so on.
CalculationWe have been given that Martha has 8 cubic feet of putting soil in the 3 flowerpots. She wants to put the same amount of soil in each pot.
To find the amount of soil in each pot, we need to divide total soil (8 cubic feet) by number of pots (3) as shown below:
Amount of soil in each pot = 8/3 cubic feet = 2.67 cubic feet (approx.)
Therefore, Alexa needs to put approximately 2.67 cubic feet of soil in each flower pot.
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solve attachment EASY POINTS
Answer:
Same as the other guy
Step-by-step explanation:
Using the quadratic formula, solve the
equation below to find the two possible
values of t.
6x^2-35=-11x
Give each value as a fraction in its
simplest form.
Answer:
x= 19/12, -41/12
Step-by-step explanation:
I'm guessing x is "t".
The quadratic formula is x=(-b+-sqrtb^2-4ac)/2a I know that this is hard to read sorry!
Plug in a, b, and c.
Oh yeah, first convert it to the form Ax^2+bx+c
so 6x^2-35=-11x
6x^2+11x-35=0
(-11+-sqrt11^2-(-4*6*35))/2*6
Simply: (-11+-sqrt 121+840)/12
(-11+-sqrt961)/12
(-11+-31)/12
-11+30=19
-11-30=-41
x= 19/12, -41/12
Which equation represents a proportional relationship?
Answer:
Answer: y = 3x
Step-by-step explanation:
Explanation:
The equation that represents a proportional relationship or line is y = kx. Because our answer is in that form we can conclude that y = 3x represents a proportional relationship.
Hope this helps you out :)
help its for calculus
Answer:
the first one
Step-by-step explanation:
Answer:
its 1/sqrt{5}+2
Find the length of the hypotenuse.
Multiple choice :
18
5
12
6
Answer:
6
Step-by-step explanation:
\((3\sqrt{2}) ^{2} + (3\sqrt{2}) ^{2} = 18 + 18 = 36\\\sqrt{36} = 6\)
Karen has $600. She spent $240 on clothes. What percentage of money did she have left?
Answer: She had 60% of the money left
Step-by-step explanation:
240/600=0.4
0.4 = 40%
100%-40%=60%
Answer:
60%
Step-by-step explanation:
LETS MAKE IT INTO A FRACTION
FIRST LETS CALCULATE HOW MUCH SHE SPENT
=240/600
WE CAN SIMPLIFY BY DIVIDING THE EQUATION BY 10
=24/60
LETS DIVIDE BY 6
=4/10
DIVIDE BY 2
=2/5
NOW LETS CALCULATE HOW MUCH SHE HAS LEFT
THE EASIEST WAY IS TO SUBTRACT
5/5-2/5=3/5
3/5 IS ALSO EQUAL TO 60/100
SO KAREN HAS 60% OF HER MONEY LEFT
HOPE I HELPED
PLS MARK BRAINLIST
(DESPERATELY TRYING TO LEVEL UP)
✌
The four candidates in an election are each supported by a different political organization
In a political election, it is not uncommon for each candidate to be supported by a different political organization. This is often reflective of the diverse political landscape of a given area, with various groups vying for power and influence.
One candidate may be supported by a liberal organization, while another may have the backing of a conservative group. There may also be candidates who are supported by smaller, niche organizations that represent specific issues or causes.
Regardless of the specific organizations involved, this dynamic can create a complex and competitive political environment. Candidates must work hard to appeal to their respective supporters, while also trying to win over voters who may not be aligned with any particular political organization.
Ultimately, the success of each candidate will depend on their ability to build a broad coalition of support, while also staying true to the values and principles of their respective organizations. This can be a challenging balancing act, but it is an essential part of the political process.
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Please Help
IMMEDIATELY
Explanation:
Let the recurring decimal be x
==========================
x = 0.216216216216...
1000x = 216.216216...
1000x - x = 216
999x = 216
x = 216/999
x = 8/37
Answer:
Let x equal the recurring decimal:
\(\sf Equation\:1: \quad x=0.216216216...\)
Create another number with recurring 216s by multiplying the above expression by 1000:
\(\sf Equation\:2: \quad 1000x=216.216216...\)
Subtract Equation 1 from Equation 2 to eliminate the recurring digits after the decimal:
\(\sf \implies 1000x-x=216.216216...-0.216216...\)
\(\sf \implies 999x=216\)
Divide both sides by 999:
\(\sf \implies \dfrac{999x}{999}=\dfrac{216}{999}\)
\(\sf \implies x=\dfrac{216}{999}\)
Simplify:
\(\sf \implies x=\dfrac{216 \div 27}{999 \div 27}=\dfrac{8}{37}\)
Calculate the net profit margin for a
shirt sold for $12 that has a $3 cost of
goods sold and 20% operating expenses.
A. 55%
C. 70%
B. 220%
D. $7
The net profit margin for this shirt is 55%.
What is net profit?
Net profit is the amount of money your business earns after deducting all operating, interest and tax expenses over a period of time. To arrive at this value, you need to know the company's gross profit. If the value of net profit is negative, it is called net loss.
Net profit is another important parameter that determines the financial health of your business. It shows whether the company can earn more than it spends. Net profit helps you decide when and how to expand your business and when to cut costs.
It is important for a business owner to know the difference between profit and profitability. Profit is an absolute number equal to revenues minus expenses. Profitability, on the other hand, is a relative number (percentage) that equals the ratio of profit to revenue.
Profitability is a measure of efficiency and is useful in determining the success or failure of a business.
Given,
Revenue = $12
Cost of goods sold = $3
Operating expenses = 20% of revenue = 20/100 x $12 = $2.4
We know,
Net Profit = Revenue - Cost of goods sold - Operating expenses
\(Net \: Profit = 12 - 3 - 2.4\)
Hence, Net Profit = $6.6
Again,
Net Profit Margin = (Net Profit / Revenue) x 100%
Net Profit Margin \(= ( \frac{6.6}{ 12}) \times 100\%\)
SO, Net Profit Margin = 55%
Therefore, the net profit margin for this shirt is 55%.
So, it is clear that choice A is correct.
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Question 8 (1 point)
There are 125 students in 9th grade at New Hope School. All 125 9th graders are going on a trip. Twelve of the students will win a small prize. Each student is given a
number. 1 - 125. Each number is written on a small piece of paper and the papers
are put into a large bag and mixed thoroughly. Then, 12 numbers are randomly
selected from the bag.
What type of sampling is this?
random sampling
convenience sampling
systematic sampling
Ostratified sampling
The type of sampling in the scenario given is a random sampling. There are different types of sampling techniques, which include simple random sampling, stratified sampling, systematic sampling, cluster sampling, etc.
Random sampling is a type of sampling technique in which every member of the population has an equal chance of getting selected in the sample.
This sampling method is unbiased and a representative of the population.
It is important to use this sampling technique when we have a large population with a wide range of characteristics.
In this scenario,
the students are randomly selected from the bag, and each student is given a number from 1-125, and their numbers are written on a small piece of paper and put in a large bag mixed thoroughly, and then 12 numbers are randomly selected from the bag.
Hence, we can say that the type of sampling in the given scenario is a random sampling.
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PLS HELPP ASAP!!
Rotate the triangle clockwise about the origin 270 degrees
Answer:
A: (-7, 2)
B: (-4, 2)
C: (-3, 7)
Step-by-step explanation:
So a little tip! 270 degrees clockwise is the same as 90 degrees counter clockwise!! (and vice versa)
90 degrees counter-clockwise would switch all the coordinates from (x,y) to (-y,x)
The measures of the angles of a triangle are shown in the figure below. Solve for x.
Answer:
x = 7
Brainliest, please!
Step-by-step explanation:
90 + 33 + (6x + 15) = 180
6x + 138 = 180
6x = 42
x = 7
In the diagram below,{GH} is parallel to {DE}
DF=5, and GH=2 find the length of {GF}
. Figures are not necessarily drawn to scale. State your answer in simplest radical form, if necessary.
The length of side GF from the similar triangles shown is GF = √10 units
What is an equation?An equation is an expression that shows the relationship between two or more numbers and variables.
Two triangles are said to be similar if they have the same shape, all the angles are equal and the ratio of corresponding sides are in the same proportion.
In a similar triangle, DE = GF, Hence:
GF/DF = GH/DE
GF / 5 = 2 / GF
GF² = 10
GF = √10
The length of side GF from the similar triangles shown is GF = √10 units
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