solve the system of two linear inequalities graphically.
y≤−5x−10
y>x+2
y≤−5x−10 and y>x+2 The shaded region satisfies both inequalities and represents the solution to the system of linear inequalities.
To graphically solve this system of linear inequalities, we can start by graphing each inequality on the same coordinate system:
First, let's graph the inequality y ≤ -5x - 10. We can start by graphing the line y = -5x - 10, which is the boundary line of the inequality. We can plot two points on this line, say (-2,0) and (0,-10), and draw a straight line passing through them.
Next, we need to determine which side of the line satisfies the inequality y ≤ -5x - 10. We can choose any point on one side of the line, say (0,0), and test it in the inequality. If y ≤ -5x - 10 is true for (0,0), then that side of the line satisfies the inequality. Otherwise, the other side satisfies the inequality. Testing (0,0), we have:
0 ≤ -5(0) - 10
0 ≤ -10
This is false, so the side of the line containing the origin does not satisfy the inequality. The other side of the line does.
Now, let's graph the inequality y > x + 2. We can start by graphing the line y = x + 2, which is the boundary line of the inequality. We can plot two points on this line, say (-2,0) and (0,2), and draw a straight line passing through them.
Next, we need to determine which side of the line satisfies the inequality y > x + 2. We can choose any point on one side of the line, say (0,0), and test it in the inequality. If y > x + 2 is true for (0,0), then that side of the line satisfies the inequality. Otherwise, the other side satisfies the inequality. Testing (0,0), we have:
0 > 0 + 2
This is false, so the side of the line containing the origin does not satisfy the inequality. The other side of the line does.
Now, we can shade the region that satisfies both inequalities. The shaded region is the region that is below the line y = -5x - 10 (including the line itself) and above the line y = x + 2 (excluding the line itself).
The shaded region is shown below:
Graph of y≤−5x−10 and y>x+2
The shaded region satisfies both inequalities and represents the solution to the system of linear inequalities.
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Name the property
(3+8)+10=3+(8+10)
Inverse Property of Addition
Inverse Property of Multiplication
Identity Property of Addition
Identity Property of Multiplication
Commutative Property of Addition
Commutative Property of Multiplication
Associative Property of Addition
Associative Property of Multiplication
Distributive Property
Addition Property of Equality
Subtraction Property of Equality
Multiplication Property of Equality
Division Property of Equality
Answer:
associative property of addition !!
Step-by-step explanation:
this is because you are ASSOCIATING the two numbers together
think of it like this
in a trio friendship there could be two friends that are closer
the 8 and the 10 in the second half of the equation are closer
BUT in the first half the 3 and the 8 are closer too
hope that made sense lol
Which expression shows how much greater the volume of the larger cube is than the volume of the smaller cube?
option D
Given;
larger cube edge length - 3x+2 units
smaller cube edge length - 2x-1 units
We know that volume of a cube = (Edge of the cube)3
volume of larger cube = (3x+2 )³
=27x³+8 +54x²+36x
volume of smaller cube=(2x-1)³
=8x³-1 -12x²+6x
Volume difference = volume of larger cube -volume of smaller cube
volume difference =( 27x³+8+54x²+36x)-(8x³- 1 - 12x²+6x)
= 19x³+9+66x²+30x
=19x³+66x²+30x+9
Hence volume of larger cube is greater by (19x³+66x²+30x+9)
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Laura has 3.85 pounds of bananas. She goes to the store to buy 2.75 more pounds of bananas to make banana bread. Each loaf requires 0.30 pounds of bananas. How many loaves of bread can she make?
Answer:
22
Step-by-step explanation:
3.85+2.75= 6.6
6.6÷0.30= 22
Answer:
The answer is 22 loaves of bread.
Step-by-step explanation:
You add 3.85 pounds + 2.75 pounds to get the total number of pounds she bought, which is 6.6 pounds of bananas.
Then you divide your total answer of 6.6 pounds by 0.30 pounds for each loaf, to get 22 loaves of bread.
draw a circle Q with a quadrilateral WXYZ inscribed in it and where WY goes right through the center Q. If angle XYZ=50 explain how you can find all other angels
Angle WZY is 50 degrees, angle WZX is also 50 degrees, and angle XZW is 160 degrees.
What is the inscribed angle theorem?
The inscribed angle theorem, also known as the central angle theorem, states that an angle formed by two chords in a circle is half the measure of the arc they intersect, or subtend, inside the circle.
To find all other angles in the circle with quadrilateral WXYZ inscribed in it and WY going through the center Q:
Since WY goes through the center, angle WYZ and angle WXY are both right angles (90 degrees)
By the inscribed angle theorem, angle WZY is equal to half the measure of the arc WX.
Since angle XYZ is given as 50 degrees, the measure of the arc WX is 2 times 50 degrees, which is 100 degrees.
Therefore, angle WZY is 50 degrees.
By the same logic, angle WZX is also 50 degrees.
Since angles WYZ and WXY are right angles, angles XZY and WZX are also right angles.
Finally, we can find angle WZY + angle XYZ + angle XZW + angle WZX = 360 degrees (sum of angles in a quadrilateral), and we can solve for angle XZW which is 160 degrees.
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A graphic designer wants to reproduce the
logo of a mountain-climbing club for some club stationery.
The logo is a triangle with the angles shown.
W Sheliqsiz
A. The designer wants the base to be 2 inches long. How
should the triangle be drawn?
Ci ilority Postulate help the
Timis
60°
50°
Answer: Sorry!
Step-by-step explanation:
Hello! I can help you if you can add the photo and fix the typos.
What is the approximate sum of this series?
A.
0.185
B.
134.83
C.
69.279
D.
184.77
Answer:
Step-by-step explanation:
For all Plato users.
We have to find the sum of the series has been given as.
\(\sum_{k=1}^{8}5(\frac{4}{3} )^{k-1}\) -----(1)
If the series has been given as,
\(\sum_{n=1}^{k}a(r)^{n-1}\) -------(2)
It's a geometric series with first term 'a' and common ratio 'r'.
Comparing both the expressions (1) and (2),
\(a=\) 5
\(r=\frac{4}{3}\)
Number of terms 'n' = 8
Sum of the k terms of this series is given by,
Sum = \(\frac{a(r^k-1)}{r-1}\)
= \(\frac{5[(\frac{4}{3})^8-1)]}{\frac{4}{3}-1 }\)
= \(\frac{5(9.98872-1)}{\frac{1}{3}}\)
= \(\frac{44.9436}{\frac{1}{3} }\)
= 134.83
Therefore, Option (B) is the correct option.
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What is 11 2/8 ㅡ 9 7/8? I will give brainliest
Answer:
11/8
Step-by-step explanation:
Dean put together first boxes for 5 of his neighbors. Each box cost $1.00 and contained a plant and a $3.00 pair of gardening gloves. He spent a total of $42.50 on everything. How much did each plant cost?
In a population of chickens, the average (arithmetic mean) weight is 6.3 pounds, and the standard deviation is 1.2 pounds. Which of the following weights (in pounds) are within 1.5 units of the standard deviation of the mean?
Indicate all weights.
A. 4.4
B. 4.6
C. 5.1
D. 5.2
E. 6.9
F. 7.6
G. 7.7
H. 8.2
The following weights (in pounds) are within 1.5 units of the standard deviation of the mean:
A. 4.4
B. 4.6
D. 5.2
E. 6.9
F. 7.6
The mean weight of the chickens in this population is 6.3 pounds, and the standard deviation is 1.2 pounds. To be within 1.5 units of the standard deviation, we need to look at the range of weights that are 1.2 +/- 1.5, which is 4.7 to 7.9 pounds.
This means that the weights within this range are 4.4, 4.6, 5.2, 6.9, 7.6, and any other weights that fall within the range. Therefore, the weights within 1.5 units of the standard deviation of the mean are:
A. 4.4, B. 4.6, D. 5.2, E. 6.9, and F. 7.6.
The standard deviation measures the spread of the data from the mean. In this case, the mean is 6.3 pounds and the standard deviation is 1.2 pounds. This means that the data points on either side of the mean will be 1.2 pounds away from it.
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Write the number in standard form. 900,00 + 80,000 + 500 + 7 HELP ME PLSS ILL GIVE U 100 DOLLARS
Answer:980,507
Step-by-step explanation:
Answer:
980,507
Step-by-step explanation:
hope this helps :)
7. Marlene expects her gross income to be $54,000 this year, and she expects her required deductions to amount to $15,000. Her employer covers 90% of the cost of a $4800-per-year health insurance plan and 80% of the cost of a $900-per-year life insurance plan, with the remainder of the cost coming out of Marlene's pay, and Marlene also expects to contribute 8% of her gross income this year to her 401(k) plan. She wants to calculate how much she will receive for each of her twice-monthly paychecks. (5 points: Part I - 1 point; Part II - 1 point; Part III - 1 point; Part IV - 1 point; Part V - 1 point)Part I: How much will Marlene pay for health insurance this year?Part II: How much will Marlene pay for life insurance this year?Part III: How much will Marlene contribute to her 401(k) plan this year?Part IV: What is Marlene's projected take-home pay for the year?Part V: How much will Marlene receive for each of her twice-monthly paychecks?
Part 1: Marlene's pay for health insurance = $480
Part 2: Marlene's pay for life insurance = $180
Part 3: Marlene's contribution to here 401(k) plan = $4320
Part 4: Marlene's projected take home for the year = $34,020
Part 5: Marlene's take home for each of her twice-monthly paychecks = $1417.5
Explanation:Marlene's expected gross income = $54000
Part 1:Her employer covers 90% of the cost of a $4800-per-year health insurance plan
Since her employer covers 90% of the cost, Marlene will pay 10% of the cost
Marlene's pay for health insurance = 10% of $4800
Marlene's pay for health insurance = (10/100) x $4800
Marlene's pay for health insurance = $480
Part 2:Her employer pays 80% of the cost of a $900-per-year life insurance plan.
Marlene will pay 20% of the cost of a $900-per-year life insurance plan.
Marlene's pay for life insurance = (20/100) x $900
Marlene's pay for life insurance = $180
Part 3:Marlene also expects to contribute 8% of her gross income this year to her 401(k) plan
Marlene's contribution to here 401(k) plan = (8/100) x $54000
Marlene's contribution to here 401(k) plan = $4320
Part 4:Marlene's projected take home for the year = (Marlene's expected gross income) - (Deductions) - (Health insurance pay) - (Life insurance pay) - ( 401(k) plan)
Marlene's projected take home for the year = $54000 - $15000 - $480 - $180 - $4320
Marlene's projected take home for the year = $34,020
Part 5:She will receive her twice-monthly paychecks 24 times in a year
Marlene's take home for each of her twice-monthly paychecks = $34020/24
Marlene's take home for each of her twice-monthly paychecks = $1417.5
A triangle ABC has coordinates for A (-4, 1).
Triangle A'B'C' has coordinates for A' (0-3)
What is the translation?
How many units right or left and how many units up or down?
Choose the best answer from the options below:
A
B
C
D
4 right, 4 down
4 left, 4 up
You have 1 hour to answer this question or you will be logged out.
4 left, 4 down
4 right, 4 up
The solution is Option A.
The coordinate of the triangle after the translation is given by A' ( 0 , -3 ) with 4 units right and 4 units down
What is Translation?A translation moves a shape up, down, or from side to side, but it has no effect on its appearance. A transformation is an example of translation. A transformation is a method of changing a shape's size or position. Every point in the shape is translated in the same direction by the same amount.
Given data ,
Let the coordinate of the triangle be represented as A
Now , the coordinate A = A ( -4 , 1 )
Now , the coordinate of the triangle after translation is A' ( 0 , -3 )
when there is a translation of the coordinate A by 4 units to the right , we get
A to 4 units right = A ( -4 + 4 , 1 )
The new coordinate of A = A ( 0 , 1 )
Now , A to 4 units down , we get
The coordinate of A' = A' ( 0 , 1 - 4 )
The coordinate of A' = A' ( 0 , -3 )
Hence , the translated coordinate is A' ( 0 , -3 )
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how many miles could he ride in 3 hr
In case whereby Jake rides his bicycle 6 miles in 3/5 of an hour. At this rate, the number of miles could he ride in 3 hours is 30 miles
How can the number of miles be calculated?The distance = bicycle 6 miles
number of hours =3/5 of an hour
then the rate = 6/ (3/5)
Then we can calculate the number of miles with the 6milesi n 3/5 hours as;
= (6 * 5/3 )
=30/3
=10
Then the rate will be 10 miles in 1 hour , hence the number of miles he will ride in 3hrs
=10 * 3 hours
= 30 miles
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Given f(x)=5(3−x)+5, what is the value of f(−6)
Answer:
50!
Good luck!
Need ASAP
A restaurant is open 24 hours a day. The manager wants to divide
the day into work shifts of equal length. The shifts should not
overlap. All shift durations should be a whole number of hours.
Describe the different ways this can be done.
Answer:
I don't know figure it out XD
Step-by-step explanation:
Answer:
Step-by-step explanation:
First you should figure out factors of 24 so there is an even number of hours per shift, and so the hours per shift are whole numbers.
Factors of 24 are: 1,2,3,4,6,8,12,24
You can use these numbers. I hope this helps you
Use the function f(x) to answer the questions:
F(x)=2x²-x-10
Part A: What are the x-intercepts of the graph of f(x)? Show your work. (2 points)
Part B: Is the vertex of the graph of f(x) going to be a maximum or a minimum? What are the coordinates of the vertex? Justify your answers and show
work. (3 points)
Part C: What are the steps you would use to graph fx)? Justify that you can use the answers obtained in Part A and Part B to draw the graph (5 point
Part A: To find the x-intercepts of the graph of f(x), we set f(x) equal to zero and solve for x:
2x² - x - 10 = 0
This equation can be factored as:
(2x + 5)(x - 2) = 0
Setting each factor equal to zero, we get:
2x + 5 = 0 => 2x = -5 => x = -5/2
x - 2 = 0 => x = 2
Therefore, the x-intercepts of the graph of f(x) are x = -5/2 and x = 2.
Part B: The vertex of the graph of f(x) can be determined using the formula x = -b/2a, where a and b are the coefficients of the quadratic equation in standard form (ax² + bx + c = 0).
In this case, a = 2 and b = -1. Plugging these values into the formula, we have:
x = -(-1) / (2 * 2) = 1/4
To determine if the vertex is a maximum or a minimum, we can examine the coefficient of the x² term. Since the coefficient a is positive (a = 2), the parabola opens upwards, and the vertex represents a minimum point
Therefore, the vertex of the graph of f(x) is (1/4, f(1/4)), where f(1/4) can be obtained by substituting x = 1/4 into the equation f(x).
Part C: To graph f(x), we can follow these steps:
Plot the x-intercepts: Plot the points (-5/2, 0) and (2, 0) on the x-axis.
Plot the vertex: Plot the point (1/4, f(1/4)) as the vertex, where f(1/4) can be obtained by substituting x = 1/4 into the equation f(x).
Determine the direction of the graph: Since the coefficient of the x² term is positive, the graph opens upwards from the vertex.
Determine additional points: Choose a few x-values on either side of the vertex and calculate their corresponding y-values by substituting them into the equation f(x). Plot these points on the graph.
Draw the graph: Connect the plotted points smoothly, following the shape of the parabola. Ensure the graph is symmetrical with respect to the vertex.
The answers obtained in Part A (x-intercepts) and Part B (vertex) provide crucial points to plot on the graph, helping us determine the shape and position of the parabola.
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The x-intercepts from the graph attached are
(-2, 0) (2.5, 0)The vertex from the graph attached is
(0.25, -10.125)How to find the required parametersPart A: To find the x-intercepts of the graph of f(x), we set f(x) equal to zero and solve for x:
2x² - x - 10 = 0
x = (-b ± √(b² - 4ac)) / (2a)
a = 2, b = -1, c = -10
Plugging these values into the quadratic formula:
x = (-(-1) ± √((-1)² - 4 * 2 * (-10))) / (2 * 2)
x = (1 ± √(1 + 80)) / 4
x = (1 ± √81) / 4
x = (1 ± 9) / 4
x₁ = (1 + 9) / 4 = 10 / 4 = 2.5
x₂ = (1 - 9) / 4 = -8 / 4 = -2
Therefore, the x-intercepts of the graph of f(x) are 2.5 and -2.
Part B
To find the coordinates of the vertex, we can use the formula:
x = -b / (2a)
x = -(-1) / (2 * 2) = 1 / 4 = 0.25
we substitute this value back into the original function:
f(0.25) = 2(0.25)² - 0.25 - 10
f(0.25) = 0.125 - 0.25 - 10
f(0.25) = -10.125
Therefore, the vertex of the graph of f(x) is located at (0.25, -9.125).
Part C: The steps to graph f(x) include:
Plotting the x-intercepts: Based on the results from Part A, we know that the x-intercepts are 2.5 and -2. We mark these points on the x-axis.
Plotting the vertex: Using the coordinates from Part B, we plot the vertex at (0.25, -9.125). This represents the minimum point of the graph.
Drawing the shape of the graph: Since the coefficient of the x² term is positive, the graph opens upward. From the vertex, the graph will curve upward on both sides.
Additional points and smooth curve: To further sketch the graph, we can choose additional x-values and calculate their corresponding y-values using the equation f(x) = 2x² - x - 10. Plotting these points and connecting them smoothly will give us the shape of the graph.
By using the x-intercepts and vertex obtained in Part A and Part B, we have the necessary information to draw the graph accurately and show the key features of the quadratic function f(x)
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Given the drawing as shown below and that pllq. Which of the following cannot be supported by the evidence shown? Worth 10 points
The relation that can not be supported by the evidence in the image is option B
What happens when a transversal cuts a parallel line?
Corresponding angles are those that are located on the same side of the transversal and in identical relative positions to the parallel lines. Angles that correspond to one another have the same measure.
Alternate interior angles are those that are located on the transverse and within the area between the parallel lines, respectively. Congruent alternate interior angles exist.
Alternate external angles are those that are outside of the space between the parallel lines and on the opposing sides of the transversal. Congruent external angles exist between the two.
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I need 23 questions answered
The surface area of a rectangular prism is 48 5/6 mi².
How to calculate the surface area of a rectangular prism?In Mathematics and Geometry, the surface area of a rectangular prism can be calculated and determined by using this mathematical equation or formula:
Surface area of a rectangular prism = 2(LH + LW + WH)
Where:
L represents the length of a rectangular prism.W represents the width of a rectangular prism.H represents the height of a rectangular prism.By substituting the given side lengths into the formula for the surface area of a rectangular prism, we have the following;
Surface area of rectangular prism = 2[6 × 2 1/3 + (1 1/4 × 6) + (1 1/4 × 2 1 /3)]
Surface area of rectangular prism = 2[14 + 15/2 + 35/12]
Surface area of rectangular prism = 48 5/6 mi².
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If full employment is $2000, how large is the recessionary or inflationary gap?
Answer:
inflationary expenditure gap of $500
Step-by-step explanation:
At AE2 there is an inflationary expenditure gap of $500 (assuming full-employment output is $2000). The fiscal authority could increase taxes or decrease expenditures, which will shift the aggregate expenditures schedule down to AE0.
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Determine if the equations are parallel, perpendicular, or neither. 2y=-3x = 6 and y = -3/2x + 5
You can use the formula y=mx+b, where m is the slope.
Your gradient is -3/2.
What are Equations?A mathematical statement that has a "equal to" symbol between two expressions with equal values is called an equation.
Equations are mathematical statements with two algebraic expressions flanking the equals (=) sign on either side.
It demonstrates the equality of the relationship between the expressions printed on the left and right sides.
We have LHS = RHS (left hand side = right hand side) in every mathematical equation.
To determine the value of an unknown variable that represents an unknown quantity, equations can be solved.
A statement is not an equation if it has no "equal to" sign.
According to our question-
y=-3/2x+1
Your slope in the second equation is -3/2 since y=-3/2x+5 is already in the form y=mx+b and m is the slope.
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39. If the letters A, B, C, D, E, F represent the numbers 4 to 9 in some
order, and
A + C = D
A + D = 2B
C + E = 2F
then what number does F represent?
Answer:
8????? I dont really know.....
Elliot has a total of 26 books. He has 12 more fiction books than nonfiction books. Let x represent the number of fiction books and y represent the number of nonfiction books.
This system of equations models the number of books.
ok but what's the question? u gave us info but what's the question
Can someone help me find the surface area of these cylinders??
The surface area for each of the cylinders is given as follows:
13. 126 yd².
14. 490 m².
15. 283 mm².
16. 297 cm².
How to obtain the surface area of a cylinder?The surface area of a cylinder of radius r and height h is given by the equation presented as follows, which combines the base area with the lateral area:
S = 2πrh + 2πr²
S = 2πr(h + r)
Item 13:
r = 2 yd and h = 8 yd, hence the surface area is given as follows:
S = 2π x 2(2 + 8)
S = 126 yd².
Item 14:
r = 6 m and h = 7 m, hence the surface area is given as follows:
S = 2π x 6(6 + 7)
S = 490 m².
Item 15:
r = 3 mm and h = 12 mm, hence the surface area is given as follows:
S = 2π x 3(3 + 12)
S = 283 mm².
Item 16:
r = 3.5 mm and h = 10 mm, hence the surface area is given as follows:
S = 2π x 3.5(3.5 + 10)
S = 297 cm².
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use integer to express a profit of ₹250
Answer:
It could be +₹250 if positive or -₹250 if negative
Step-by-step explanation:
Evaluate the expression 9 + (7 - 4)2 ÷ 3.
6
3
18
12
Answer:
11
Step-by-step explanation:
None of these answer choices you have are correct. you have to do parentheses first, which gives you 9 + (3)2/3, then you do division which gives you .6666666666, then you multiply that by 3 and you get 2 and add that to 9
\(cos^{2} (\frac{1}{2}*arccos(-\frac{12}{13} ))\)
Recall the half-angle identity,
cos²(x/2) = (1 + cos(x))/2
This means
\(\cos^2\left(\dfrac12 \arccos\left(-\dfrac{12}{13}\right)\right) = \dfrac{1 + \cos\left(\arccos\left(-\frac{12}{13}\right)\right)}2 = \dfrac{1 - \frac{12}{13}}2 = \boxed{\frac1{26}}\)
A motor oil retailer needs to fill 60 one quart bottles, and he has two tanks: one that contains 12 gallons of oil and one that
contains 2 gallons of oil. Which will he need to fill the bottles?
Answer:
The motor oil retailer needs 15 gallons of oil, so he will have to use both tanks, and still have 1 gallon of oil short.
Step-by-step explanation:
Since a motor oil retailer needs to fill 60 one quart bottles, and he has two tanks: one that contains 12 gallons of oil and one that contains 2 gallons of oil, to determine which will need to fill the bottles, the following calculation must be performed:
Quart to gallon = 4: 1
1/4 x 60 = X
60/4 = X
15 = X
Therefore, the motor oil retailer needs 15 gallons of oil, so he will have to use both tanks, and still have 1 gallon of oil short.
Statistical data of breakdowns of computer XXX show that the duration for trouble-free operation of the machine can be described as a gamma distribution with a mean of 40 days and a standard deviation of 10 days. The computer is occasionally taken out for maintenance in order to insure operational condition at any time with a 95% probability.
1. How often should the computer be scheduled for maintenance? Should it be shorter or longer than the mean of 40 days?
2. Three XXX computers were acquired at the same time by an engineering consulting firm. The computers are operating under the same environment, workload, and regular maintenance schedule. The breakdown times between the computers, however, may be assumed to be statistically independent. What is the probability that at least one of the three machines will break down within the first scheduled maintenance time?
1. In this case, we want the reliability to be 95%, so the probability of not breaking down is 0.95.
2. Probability of no breakdowns = (reliability of a single machine)^3. Probability of at least one breakdown = 1 - Probability of no breakdowns
1. To determine how often the computer should be scheduled for maintenance, we need to consider the reliability and the desired level of operational condition. Since the duration for trouble-free operation follows a gamma distribution with a mean of 40 days, this means that, on average, the computer can operate for 40 days before a breakdown occurs.
To ensure operational condition with a 95% probability, we can calculate the maintenance interval using the concept of reliability. The reliability represents the probability that the machine will not break down within a certain time period. In this case, we want the reliability to be 95%, so the probability of not breaking down is 0.95.
Using the gamma distribution parameters, we can find the corresponding reliability for a specific time duration. By setting the reliability equation equal to 0.95 and solving for time, we can find the maintenance interval:
reliability = 0.95
time = maintenance interval
Using reliability and the gamma distribution parameters, we can calculate the maintenance interval.
2. To calculate the probability that at least one of the three machines will break down within the first scheduled maintenance time, we can use the complementary probability approach.
The probability that none of the machines will break down within the first scheduled maintenance time is given by the reliability of a single machine raised to the power of the number of machines:
Probability of no breakdowns = (reliability of a single machine)^3
Since the breakdown times between the machines are statistically independent, we can assume that the reliability of each machine is the same. Therefore, we can use the reliability calculated in the first part and substitute it into the formula:
Probability of at least one breakdown = 1 - Probability of no breakdowns
By calculating this expression, we can determine the probability that at least one of the three machines will break down within the first scheduled maintenance time.
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Use Newton’s Method to find the solution to x^3+1=2x+3 use x_1=2 and find x_4 accurate to six decimal places. Hint use x^3-2x-2=0 as your equation.
Let \(f(x) = x^3 - 2x - 2\). Then differentiating, we get
\(f'(x) = 3x^2 - 2\)
We approximate \(f(x)\) at \(x_1=2\) with the tangent line,
\(f(x) \approx f(x_1) + f'(x_1) (x - x_1) = 10x - 18\)
The \(x\)-intercept for this approximation will be our next approximation for the root,
\(10x - 18 = 0 \implies x_2 = \dfrac95\)
Repeat this process. Approximate \(f(x)\) at \(x_2 = \frac95\).
\(f(x) \approx f(x_2) + f'(x_2) (x-x_2) = \dfrac{193}{25}x - \dfrac{1708}{125}\)
Then
\(\dfrac{193}{25}x - \dfrac{1708}{125} = 0 \implies x_3 = \dfrac{1708}{965}\)
Once more. Approximate \(f(x)\) at \(x_3\).
\(f(x) \approx f(x_3) + f'(x_3) (x - x_3) = \dfrac{6,889,342}{931,225}x - \dfrac{11,762,638,074}{898,632,125}\)
Then
\(\dfrac{6,889,342}{931,225}x - \dfrac{11,762,638,074}{898,632,125} = 0 \\\\ \implies x_4 = \dfrac{5,881,319,037}{3,324,107,515} \approx 1.769292663 \approx \boxed{1.769293}\)
Compare this to the actual root of \(f(x)\), which is approximately 1.769292354, matching up to the first 5 digits after the decimal place.