Answer:
The given triangles APSR and APQR are congruent by S.A.S. criteria.
Step-by-step explanation:
The S.A.S. (Side-Angle-Side) congruence criteria states that two triangles are congruent if their corresponding two sides and included angles are congruent to one another's corresponding two sides and included angle.
Here, we can observe that both triangles share the same side AP.
PR and PQ on the side are congruent.
- Both triangles share Angle P.
The supplied triangles APSR and APQR are therefore congruent according to S.A.S. requirements.
so we can conclude: S.A.S. for the triangles being congruent.
You are choosing between two health clubs. Club A offers membership for a fee of $18 plus a monthly fee of $14. Club B offers membership for a fee of $26 plus a monthly fee of $12 After how many months will the total cost of each health club be the same? What will be the total cost for each club?
The total cost of membership for both Club A and Club B will be the same, amounting to $74.
To determine after how many months the total cost of each health club will be the same, we can set up an equation where the total cost of Club A is equal to the total cost of Club B.
Let's assume the number of months is represented by 'm'. The total cost of Club A after 'm' months can be calculated as:
Total Cost of Club A = $18 + $14m
Similarly, the total cost of Club B after 'm' months can be calculated as:
Total Cost of Club B = $26 + $12m
We want to find the value of 'm' where the total costs are equal, so we can set up the following equation:
$18 + $14m = $26 + $12m
Now, we can solve this equation for 'm':
$14m - $12m = $26 - $18
$2m = $8
m = $8 / $2
m = 4
Therefore, after 4 months, the total cost of each health club will be the same.
To find the total cost for each club after 4 months, we substitute 'm' into the total cost equations:
Total Cost of Club A = $18 + $14(4) = $18 + $56 = $74
Total Cost of Club B = $26 + $12(4) = $26 + $48 = $74
So, the total cost for each club after 4 months will be $74.
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5,10,15,20,25 what is the common difference
Answer:
The common difference in the given sequence is 5.
Step-by-step explanation:
The common difference in the sequence is 5 because they all add by 5 each time for example 5 + 5= 10 and 10+5=15
Please awnser asap I will brainlist
The true statement about the set is n.
The correct answer choice is option A.
Which statement is true?The intersection of two sets for instance, set A and B, denoted (n) is the set containing all elements of set A that also belongs to set B.
{6, 8, 10, 12} _ {5, 6, 7, 8, 9} = {6, 8}
Let
{6, 8, 10, 12} = set A
{5, 6, 7, 8, 9} = set B
A n B = {6, 8}
Therefore, the intersection of set A and set B, that is, the elements of set A that are also contained in B are {6, 8}
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The mean age of 7 boys is 12yrs. What is the total age of the boys?
Answer:
total age = 84 years
Step-by-step explanation:
mean is calculated as
mean = [tex]\frac{total}{count}[/tex]
here count = 7 and mean = 12 , then
[tex]\frac{total}{7}[/tex] = 12 ( multiply both sides by 7 )
total = 7 × 12 = 84 years
help me please i would appreciate it so so much
The triangles are congruent because of S.A.A
What are congruent triangles?Congruent triangles are triangles having corresponding sides and angles to be equal. This means that for two triangles to be congruent, the corresponding angles must be equal and the corresponding sides must also be equal.
In the triangles the corresponding angles are equal.
In triangle ABC, the third angle is calculated as;
180-(90+30)
= 180-120
= 60°
I'm triangle DCE, the third angle is calculated as;
180-(90+30)
= 180-120
= 60°
Therefore the two triangles are congruent because the corresponding angles are equal.
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Simplify (2x-3)(5x squared-2x+7)
To simplify the expression (2x-3)(5x^2-2x+7), we can use the distributive property.
First, multiply 2x by each term inside the second parentheses:
2x * 5x^2 = 10x^3
2x * -2x = -4x^2
2x * 7 = 14x
Next, multiply -3 by each term inside the second parentheses:
-3 * 5x^2 = -15x^2
-3 * -2x = 6x
-3 * 7 = -21
Combine all the resulting terms:
10x^3 - 4x^2 + 14x - 15x^2 + 6x - 21
Now, combine like terms:
10x^3 - 19x^2 + 20x - 21
So, the simplified expression is 10x^3 - 19x^2 + 20x - 21.
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K
Suppose a business purchases equipment for $12,500
and depreciates it over 5 years with the straight-line
method until it reaches its salvage value of $2500 (see
the figure below). Assuming that the depreciation can be
for any part of a year, answer the questions to the right.
A Dollars
15,000+
12,500
10,000+
5000
10,500
8500
6500
4500
2500
Years
Q
...
Q1- The annual depreciation for the equipment is $2,000.
Q2- The book value of the equipment at the end of Year 3 is $6,500.
Q1: What is the annual depreciation for the equipment?
To calculate the annual depreciation, we need to determine the difference between the initial value and the salvage value, and divide it by the number of years.
Initial value = $12,500
Salvage value = $2,500
Number of years = 5
Annual depreciation = (Initial value - Salvage value) / Number of years
= ($12,500 - $2,500) / 5
= $10,000 / 5
= $2,000
Therefore, the annual depreciation for the equipment is $2,000.
Q2: What is the book value of the equipment at the end of Year 3?
The book value of the equipment at the end of a specific year can be calculated by subtracting the accumulated depreciation from the initial value.
Initial value = $12,500
Annual depreciation = $2,000
Number of years = 3
Accumulated depreciation = Annual depreciation * Number of years
= $2,000 * 3
= $6,000
Book value at the end of Year 3 = Initial value - Accumulated depreciation
= $12,500 - $6,000
= $6,500
Therefore, the book value of the equipment at the end of Year 3 is $6,500.
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Ethan decides to type up some documents while waiting the meeting to start.He can type 2 pages every 1/8 hour.If the meeting started 3/4 hour later than the scheduled time,how many pages can he type before the meeting starts?
Answer: 4 pages
Step-by-step explanation:
To solve this problem, we need to use the formula:
Rate = Output/Time
Let's use "p" to represent the number of pages Ethan can type and "t" to represent the time he has before the meeting starts.
Rate = 2 pages/(1/8 hour) = 16 pages/hour
Since the meeting starts 3/4 hour later than the scheduled time, Ethan has t = 1 - 3/4 = 1/4 hour to type pages before the meeting starts.
Output = Rate * Timep = (16 pages/hour) * (1/4 hour) = 4 pages
Therefore, Ethan can type 4 pages before the meeting starts.
Answer: 4 pages
In right triangle ABC the altitude CH to the hypotenuse AB intersects angle bisector AL at point D. Find BC if AD = 8 cm and BH = 4 cm.
THIS IS RSM PROBLEM PLEASE HELP!!!!!!!
Therefore, BC is equal to 4 cm.
To solve this problem, we can use the Angle Bisector Theorem and the Pythagorean Theorem.
Let's start by applying the Angle Bisector Theorem. According to the theorem, the ratio of the segments of the hypotenuse formed by the altitude is equal to the ratio of the corresponding sides of the triangle.
In triangle ABC, we have:
AD/DB = AC/CB
Given that AD = 8 cm, we need to find DB. Let's denote DB as x.
8/x = AC/CB
Since AC is the altitude, it can be determined by applying the Pythagorean Theorem in right triangle ACH.
AC^2 = AH^2 + HC^2
AC^2 = (AB - BH)^2 + HC^2
AC^2 = (BC - 4)^2 + HC^2
Now, let's apply the Pythagorean Theorem in right triangle BCH.
BC^2 = BH^2 + HC^2
BC^2 = 4^2 + HC^2
Since AC = BC - 4, we can substitute these expressions into the equation:
(BC -4)^2 + HC^2 = BC^2
Expanding and simplifying this equation, we get:
BC^2 - 8BC + 16 + HC^2 = BC^2
Simplifying further, we have:
-8BC + 16 + HC^2 = 0
Now, let's substitute the value of HC = AD - AH = 8 - 4 = 4 into the equation:
-8BC + 16 + 4^2 = 0
-8BC + 16 + 16 = 0
-8BC + 32 = 0
-8BC = -32
BC = -32 / -8
BC = 4
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-) Find the equation of the line that passes through (1,0) and (3,6).
The equation of the line that passes through the points (1,0) and (3,6) is y = 3x - 3.
What is the equation of the line that passes through (1,0) and (3,6)?The formula for equation of line is expressed as:
y = mx + b
Where m is slope and b is the y-intercept.
Given that, the line passes through points (1,0) and (3,6).
First, we determine the slope:
[tex]Slope\ m = \frac{y_2 - y_1}{x_2 - x_1} \\\\Slope\ m = \frac{6 - 0}{3 - 1} \\\\Slope\ m = \frac{6}{2} \\\\Slope\ m = 3[/tex]
Now we plug the slope m = 3 and one point (1,0)into the point-slope form to find the equation:
( y - y₁ ) = m( x - x₁ )
( y - 0 ) = 3( x - 1 )
y = 3x - 3
Therefore, the equation of the line is y = 3x - 3.
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It takes 41 minutes for 9 people to paint 9 walls.
How many minutes does it take 1414 people to paint 14 walls?
The time taken for 1414 people to paint 14 walls is 6,430.44 minutes.
To find out how many minutes it would take 1414 people to paint 14 walls, we can use the information given to find the ratio.
We know that it takes 9 people 41 minutes to paint 9 walls.
Let's find the ratio:
(9 people) : (1414 people) = (41 minutes) : (x minutes)
Use the mutual multiplication property of the resulting ratio:
9 * x = 1414 * 41
Right simplification:
9x = 57974
To solve this problem, create a ratio using the information provided:
(9 people) : (1414 people) = (41 minutes) : (x minutes)
We can multiply the ratios:
9 * x = 1414 * 41
On the right side of the equation, calculate the product of 1414 and 41, which equals 57974.
4 444 So:
444 9x = 57974 To separate
4 share both sides of the equation with 9:
4 x = 57974/9
share both sides with 9:
4 x = 6430.44
It will take 6,430.44 minutes for 1,414 people to paint 14 walls.
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Solve for x and graph the answer on a number line
2
The solution to the system of inequalities in interval notation is [-2, 1].
How to solve the system of inequalities?Based on the information provided in the image below, we have the following system of inequalities;
-12 < 3x - 6
-3 ≥ 3x - 6
By adding 6 to both sides of the equation (inequality), we have;
-12 < 3x - 6
-12 + 6 < 3x - 6 + 6
-6 < 3x
-2 < x
x > -2 (flip)
-3 ≥ 3x - 6
-3 + 6 ≥ 3x - 6 + 6
3 ≥ 3x
1 ≥ x
x ≤ 1
Therefore, the solution to the system of inequalities is given by:
-2 < x ≤ 1
In interval notation, we have [-2, 1].
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Missing information:
The question is incomplete and the complete question is shown in the attached picture.
an ice cream stand has 9 flavors. a group of children each buy a double scoop with 2 flavors. if none chose the same combination, how many kids are there????
Since each child buys a double scoop with 2 flavors and no two children choose the same combination, we can determine the number of children by finding the number of unique flavor combinations possible.
To calculate the number of unique flavor combinations, we can use the concept of combinations without repetition. The formula for this is given by nCr = n! / ((n-r)! * r!), where n is the total number of flavors and r is the number of flavors chosen for each double scoop.
In this case, there are 9 flavors available and each child chooses 2 flavors. Using the formula, we have:
9C2 = 9! / ((9-2)! * 2!) = 9! / (7! * 2!) = (9 * 8) / 2 = 36 / 2 = 18.
Therefore, there are 18 children in the group, as each child can choose from 18 unique flavor combinations without repetition.
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Delaware has a K-12 student enrollment of 120,475 across 19 districts. Alabama has 630,683 students across 137 districts. If Delaware was proportional to Alabama in enrollment to the district, how many districts would Delaware have? Round to the nearest whole number.
Answer:
If Delaware was proportional to Alabama in enrollment to the district, it would have approximately 37 districts.
Here's how I calculated it:The ratio of students to districts in Alabama is 630,683/137 = 4,603 students per district. If Delaware had the same ratio of students to districts, it would have 120,475/4,603 = 26.16 districts. Rounding to the nearest whole number, Delaware would have approximately 26 districts if it was proportional to Alabama in enrollment to the district.
Sarah wants to save $20,000 to use for a down payment on a home. She deposits some money into a 4-year certificate of deposit (CD) with an annual interest rate of 4.5% compounded monthly. How much does Sarah need to deposit in the CD to reach her goal of having $20,000 in 4 years? Round your final answer to the nearest dollar.
Hint: Use the formula PV=frac(S,sup((1+i),n)).
$12.583
$16,711
$4,785
$5,000
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9. a. Finish the table
b. Name the type of sequence
c. Find an equation for the following sequence
Answer:
a. 0.9375, 0.46875
b. geometric sequence
c. equation: [tex] 7.5 * (\frac{1}{2})^(n-1)[/tex]
Step-by-step explanation:
a.
The table can be finished as follows:
n t(n)
1 7.5
2 3.75
3. 1.875
4. 0.9375
5 0.46875
b.
The type of sequence is a geometric sequence.
A geometric sequence is a sequence of numbers where the ratio between any two consecutive terms is constant.
In this case, the ratio between any two consecutive terms is 3.75/7.5=½ ,
so the sequence is geometric.
c.
The equation for the sequence is t(n) = 7.5 * (1/2)^n.
This equation can be found by looking at the first term of the sequence (7.5) and the common ratio (1/2).
t(1) = 7.5
t(2) = 7.5 * (1/2) = 3.75
t(3) = 7.5 * (1/2)^2 = 1.875
The equation can also be found by looking at the general formula for a geometric sequence,
which is [tex]t(n) = a*r^{n-1}[/tex]
In this case,
a = 7.5 r = 1/2.t(n) =[tex] 7.5 * (\frac{1}{2})^{n-1}[/tex]
This is the required equation.
Answer:
[tex]\textsf{a.}\quad \begin{array}{|c|c|c|c|c|c|}\cline{1-6}\vphantom{\dfrac12} n&1&2&3&4&5\\\cline{1-6}\vphantom{\dfrac12}t(n)&7.5&3.75&1.875&0.9375&0.4687\\\cline{1-6}\end{array}[/tex]
[tex]\textsf{b.} \quad \textsf{Geometric sequence.}[/tex]
[tex]\textsf{c.} \quad t(n)=7.5(0.5)^{n-1}[/tex]
Step-by-step explanation:
Before we can complete the table, we need to determine if the sequence is arithmetic or geometric.
To determine if a sequence is arithmetic or geometric, examine the pattern of the terms in the sequence.
In an arithmetic sequence, the difference between consecutive terms (called the common difference) remains constant.In a geometric sequence, the ratio between consecutive terms (called the common ratio) remains constant.Calculate the difference between consecutive terms by subtracting one term from the next:
[tex]t(2)-t(1)=3.75-7.5=-3.75[/tex]
[tex]t(3)-t(2)=1.875-3.75 = -1,875[/tex]
As the difference is not common, the sequence is not arithmetic.
Calculate the ratio between consecutive terms by dividing one term by the previous term.
[tex]\dfrac{t(2)}{t(1)}=\dfrac{3.75}{7.5}=0.5[/tex]
[tex]\dfrac{t(3)}{t(2)}=\dfrac{1.875}{3.75}=0.5[/tex]
As the ratio is common, the sequence is geometric.
To complete the table, multiply the preceding term by the common ratio 0.5 to calculate the next term:
[tex]t(4)=t(3) \times 0.5=1.875 \times 0.5=0.9375[/tex]
[tex]t(5)=t(4) \times 0.5=0.9375 \times 0.5=0.46875[/tex]
Therefore, the completed table is:
[tex]\begin{array}{|c|c|c|c|c|c|}\cline{1-6}\vphantom{\dfrac12} n&1&2&3&4&5\\\cline{1-6}\vphantom{\dfrac12}t(n)&7.5&3.75&1.875&0.9375&0.4687\\\cline{1-6}\end{array}[/tex]
To find an equation for the sequence, use the general form of a geometric sequence:
[tex]\boxed{\begin{minipage}{5.5 cm}\underline{Geometric sequence}\\\\$a_n=ar^{n-1}$\\\\where:\\\phantom{ww}$\bullet$ $a$ is the first term. \\\phantom{ww}$\bullet$ $r$ is the common ratio.\\\phantom{ww}$\bullet$ $a_n$ is the $n$th term.\\\phantom{ww}$\bullet$ $n$ is the position of the term.\\\end{minipage}}[/tex]
In this case, the first term is the value of t(n) when n = 1, so a = 7.5
We have already calculated the common ratio as being 0.5, so r = 0.5.
Substitute these values into the formula to create an equation for the sequence:
[tex]t(n)=7.5(0.5)^{n-1}[/tex]
Of(x) = x² - 6x-1-
Mark thic and return
24
-10-8-8-22-
-8
-8
-10
2
B
8 10 x
What is the axis of symmetry
The axis of symmetry of the function f(x) = x² - 6x-1 is equal to 3.
How to determine the axis of symmetry of a quadratic function?In Mathematics, the axis of symmetry of a quadratic function can be calculated by using this mathematical equation:
Axis of symmetry, Xmin = -b/2a
Where:
a and b represents the coefficients of the first and second term in the quadratic function.
By substituting the parameters, we have the following:
Axis of symmetry, Xmin = -b/2a
Axis of symmetry, Xmin = -(-6)/2(1)
Axis of symmetry, Xmin = 6/2
Axis of symmetry, Xmin = 3.
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In the triangle what is the value of x
Answer:
26.1°
Step-by-step explanation:
You want the value of angle x° in a right triangle that has the side adjacent to x being 53 cm, and the side opposite being 26 cm.
TangentThe tangent ratio is ...
Tan = Opposite/Adjacent
ApplicationThe side opposite the angle is 26 cm; the side adjacent is 53 cm. The ratio of these is ...
tan(x) = 26/53
The arctangent function is used to find the angle when the tangent is known.
x = arctan(26/53) ≈ 26.1°
The angle x° is approximately 26.1°.
__
Additional comment
The calculator must be in degrees mode.
<95141404393>
100 Points! Geometry question. Photo attached. Please show as much work as possible. Thank you!
(A) Triangle ABC, and triangle QPR are similar based on side-side-side (SSS) similarity.
(B) Triangle ABC and triangle DEF are similar based on side-side-side (SSS) similarity.
(C) ) Triangle STU and triangle JPM are similar based on side-angle-side (SAS) similarity.
(D) ) Triangle SMK and triangle QTR are similar based on angle-angle (AA) similarity.
What are similar triangles?Similar triangles have the same corresponding angle measures and proportional side lengths.
The triangle similarity criteria are:
AA (Angle-Angle)SSS (Side-Side-Side)SAS (Side-Angle-Side)(A) Triangle ABC, and triangle QPR are similar based on side-side-side similarity.
12/8 = 9/6
1.5 = 1.5
(B) Triangle ABC and triangle DEF are similar base on side-side-side similarity as shown in the side lengths.
(C) ) Triangle STU and triangle JPM are similar base on side-angle-side similarity.
14/10 = 21/15
1.4 =
(D) ) Triangle SMK and triangle QTR are similar base on angle-angle similarity.
SMK = 90⁰, 60⁰, 30⁰
QTR = 90⁰, 30⁰, 60⁰
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Find the 6terms of the series 247
The six terms of the series 247 are 2, 2, 2, 2, 2, and 2.
To find the six terms of a series, we need to first understand what a series is. A series is defined as the sum of the terms of a sequence. A sequence is a set of numbers in a specific order.
Therefore, a series is a sum of terms from a sequence. There are different types of series, and they have different formulas for calculating their terms.In this case, we are required to find the six terms of the series 247. Since this is a finite series, we can use a formula to calculate the nth term of a finite series.
The formula is given as follows:Tn = a + (n - 1) dWhere Tn is the nth term of the series, a is the first term of the series, n is the number of terms in the series, and d is the common difference between the terms of the series.To find the six terms of the series 247, we need to know the value of a and d. In this case, we can see that the first term of the series is 2. Therefore, a = 2.
Since this is a constant series, we can see that the common difference between the terms is 0. Therefore, d = 0.Substituting these values in the formula, we get:T1 = a + (1 - 1) dT1 = 2 + 0T1 = 2T2 = a + (2 - 1) dT2 = 2 + 0T2 = 2T3 = a + (3 - 1) dT3 = 2 + 0T3 = 2T4 = a + (4 - 1) dT4 = 2 + 0T4 = 2T5 = a + (5 - 1) dT5 = 2 + 0T5 = 2T6 = a + (6 - 1) dT6 = 2 + 0T6 = 2.
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What is the meaning of "there exists x ∈ S ∖ m. Then m ⊊ m ∪ {x} ∈ X; a contradiction"?
The statement "there exists x ∈ S ∖ m" means that there exists an element x that belongs to the set S but does not belong to the set m. In other words, x is an element that is present in S but is not present in m.
The phrase "m ⊊ m ∪ {x} ∈ X" states that the set m is a proper subset of the set m ∪ {x}, and this union belongs to the set X. This implies that the set m ∪ {x} contains all the elements of m along with the additional element x.
The phrase "a contradiction" indicates that the statement or assumption being made leads to a logical inconsistency or contradiction. In this context, the contradiction arises from the fact that the assumption that x is not in m contradicts the statement that m ∪ {x} is a proper superset of m.
Overall, the given statement implies that the existence of an element x in S, which is not in m, leads to a contradiction when considering the relationship between m and m ∪ {x}.
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100 Points! Geometry question. Photo attached. Only looking for an answer to B. Please show as much work as possible. Thank you!
Answer: Read the solution
Step-by-step explanation:
A. For diagram A, triangles ANC and BDE are similar. Thus, we can use similarity ratios to find the length of AC. (x+1)/12 = (x+5)/15. 15x+15=12x+60. Thus 3x=45, and x=15. Since we need to find AC, AC = 15+1 = 16.
B. For diagram B, triangles SRT and VUT are similar. Again, using similarity ratios, (4x-1)/14=(x+2)/6 or 14x+28=24x-6. 10x=34, x=3.4.
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5. Find the domain and the range for each of the following graphs.
Answer:
Domain: x [tex]\geq[/tex] -5
Range: y [tex]\geq[/tex] -3
Step-by-step explanation:
The domain is all the possible inputs or x value. x will be greater than -5.
The range is all of the possible outputs or y value. y will be greater than -3
Answer:
Domain: [-5, ∞)
Range: [-3, ∞)
Step-by-step explanation:
The given graph shows a continuous curve with a closed circle at the left endpoint (-5, -3) and an arrow at the right endpoint.
A closed circle indicates the value is included in the interval.
An arrow shows that the function continues indefinitely in that direction.
DomainThe domain of a function is the set of all possible input values (x-values).
As the leftmost x-value of the curve is x = -5, and it continues indefinitely in the positive direction, the domain of the graphed function is:
Interval notation: [-5, ∞)Inequality notation: x ≥ -5Set builder notation: {x ∈ R | x ≥ -5 }RangeThe range of a function is the set of all possible output values (y-values).
From observation, it appears that the minimum y-value of the curve is y = -3. The curve continues indefinitely in the positive direction in quadrant I. Therefore, the range of the graphed function is:
Interval notation: [-3, ∞)Inequality notation: y ≥ -3Set builder notation: {y ∈ R | y ≥ -3 }Given that x^2-4x + 1 = (x-p)- q for all values of x, find the value of p and the value of q
The values of p and q are 1 and 3, respectively.
Given the equation x^2-4x + 1 = (x-p)- q, we can compare the coefficients of the corresponding terms on both sides of the equation.
We compared the coefficients of the x^2 terms on both sides of the equation. The coefficient of the x^2 term on the left-hand side is 1, and the coefficient of the x^2 term on the right-hand side is 1. This means that the two terms are equal, and therefore p = 1.
We compared the coefficients of the x terms on both sides of the equation. The coefficient of the x term on the left-hand side is -4, and the coefficient of the x term on the right-hand side is -1. This means that the two terms are equal, and therefore q = 3.
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A car is traveling at a rate of 30 meters per second. What is the car's rate in kilometers per hour? How many kilometers will the car travel in 5 hours? Do not
round your answers.
The speed of the car is 108 kilometers per hour and the distance covered in 5 hours is 540 kilometers.
What is the speed of the car in kilometers per hour and distance covered after 5 hours?Speed is simply referred to as distance traveled per unit time.
It is expressed as;
Speed = Distance ÷ time.
Given that the car is traveling at a rate of 30 meters per second.
First, convert the car's speed from meters per second to kilometers per hour using the conversion factor.
1 kilometer = 1000 meters
1 hour = 3600 seconds
Hence;
Speed = 30m/s = ( 30 × 3600/1000 )kmh
Speed = 108 kmh
Next, the distance covered in 5 hours will be:
Speed = Distance / time
Distance = speed × time
Distance = 108 kmh × 5 h
Distance = 540 km
Therefore, the disatnce covered is 540 kilometers.
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Evaluate the double integral ∬R(3x−y)dA, where R is the region in the first quadrant enclosed by the circle x2+y2=16 and the lines x=0 and y=x, by changing to polar coordinates.
Answer:
[tex]\displaystyle 64-32\sqrt{2}+\frac{32\sqrt{2}}{3}\approx3.66[/tex]
Step-by-step explanation:
[tex]\displaystyle \iint_R(3x-y)\,dA\\\\=\int^\frac{\pi}{2}_\frac{\pi}{4}\int^4_0(3r\cos\theta-r\sin\theta)\,r\,dr\,d\theta\\\\=\int^\frac{\pi}{2}_\frac{\pi}{4}\int^4_0(3r^2\cos\theta-r^2\sin\theta)\,dr\,d\theta\\\\=\int^\frac{\pi}{2}_\frac{\pi}{4}\int^4_0r^2(3\cos\theta-\sin\theta)\,dr\,d\theta\\\\=\int^\frac{\pi}{2}_\frac{\pi}{4}\frac{64}{3}(3\cos\theta-\sin\theta)\,d\theta\\\\=\int^\frac{\pi}{2}_\frac{\pi}{4}\biggr(64\cos\theta-\frac{64}{3}\sin\theta\biggr)\,d\theta[/tex]
[tex]\displaystyle =\biggr(64\sin\theta+\frac{64}{3}\cos\theta\biggr)\biggr|^\frac{\pi}{2}_\frac{\pi}{4}\\\\=\biggr(64\sin\frac{\pi}{2}+\frac{64}{3}\cos\frac{\pi}{2}\biggr)-\biggr(64\sin\frac{\pi}{4}+\frac{64}{3}\cos\frac{\pi}{4}\biggr)\\\\=64-\biggr(64\cdot{\frac{\sqrt{2}}{2}}+\frac{64}{3}\cdot{\frac{\sqrt{2}}{2}}\biggr)\\\\=64-32\sqrt{2}+\frac{32\sqrt{2}}{3}\biggr\\\\\approx3.66[/tex]
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The element of A n B is { 7, 8}
What is set?A set is the mathematical model for a collection of different things; a set contains elements or members, which can be mathematical objects of any kind.
For example, if the element of P is even numbers from 1 to 20 and element of Q is factor of 6 from 1 to 20 then we can say that set Q is a subset of set P.
The sign 'n' means intersection and this means what is common to two or more set.
If set A = { 1,2,5,7,8}
set B = { 6,7,8,9}
then we can see that 7 and 8 are common to both sides, then
A n B = { 7,8}
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A handrail, 5.4m long on a staircase is inclined at 40° to the horizontal .if the lower end of the handrail is 0.7m high, calculate the height of the upper end above the floor
The height of the upper end of the handrail above the floor is approximately 3.467726 meters.
To calculate the height of the upper end of the handrail above the floor, we can use trigonometry and the given information about the length of the handrail and the angle of inclination.
Let's break down the problem into two right triangles:
The first right triangle is formed by the handrail, the floor, and a vertical line connecting the lower end of the handrail to the floor. The vertical line represents the height of the lower end above the floor, which is given as 0.7m.
The second right triangle is formed by the handrail, the floor, and a horizontal line parallel to the floor, connecting the upper end of the handrail to the floor. This horizontal line represents the height we need to calculate.
Now, let's apply trigonometric ratios to find the height of the upper end of the handrail above the floor.
In the first right triangle:
Opposite side = height of the lower end = 0.7m
Hypotenuse = length of the handrail = 5.4m
Using the sine function:
sin(angle) = Opposite / Hypotenuse
sin(40°) = 0.7 / 5.4
Now, let's solve for the sin(40°):
sin(40°) ≈ 0.64279
Multiplying both sides of the equation by 5.4:
0.64279 * 5.4 ≈ 3.467726
So, the length of the vertical line in the second right triangle (representing the height of the upper end of the handrail above the floor) is approximately 3.467726 meters.
Therefore, the height of the upper end of the handrail above the floor is approximately 3.467726 meters.
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What is Navems manufacturing cycle efficiency (MCE) for its elevators
Navern Corporation's manufacturing cycle efficiency (MCE) for its elevators is approximately 11.36%.
How to calculate the valueValue-added time is the time spent on activities that directly add value to the product.
Value-added time: Process time = 5 days (the process of manufacturing the elevators)
Total cycle time: Wait time + Inspection time + Process time + Move time + Queue time
= 12 days + 12 days + 5 days + 6 days + 9 days
= 44 days
MCE = (Value-added time / Total cycle time) * 100
= (5 days / 44 days) * 100
≈ 11.36%
Therefore, Navern Corporation's manufacturing cycle efficiency (MCE) for its elevators is approximately 11.36%.
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firm's total production of cars at the and of ten years of operation is 14/1500 I the firm produced logo cars during t's first year of operation. Forecast the level of outpul For the 15t year
The forecasted level of output for the 15th year would be 14/15000.
To forecast the level of output for the 15th year, we need to analyze the given information about the firm's total production of cars at the end of ten years of operation and its production during the first year.
According to the information provided, the firm's total production of cars at the end of ten years of operation is 14/1500. However, the production of logo cars during the first year is not specified. We need this information to accurately forecast the level of output for the 15th year.
If we assume that the production of logo cars during the first year is constant throughout the ten-year period, we can use the given information to estimate the average annual production. Since we have 14/1500 as the total production over ten years, we can calculate the average annual production as (14/1500) / 10.
(14/1500) / 10 = 14/15000
Therefore, the estimated average annual production is 14/15000.
Now, to forecast the level of output for the 15th year, we can assume that the average annual production remains constant. Therefore, the forecasted production for the 15th year would be the same as the average annual production.
Hence, the forecasted level of output for the 15th year would be 14/15000.
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