The test statistic be Pearson's correlation test.
What is Null hypothesis ?
The null hypothesis assumes that any difference between the selected attributes in a set of data is attributable to chance.
The test statistic could be Pearson's correlation coefficient, which measures the linear association between two continuous variables (here, amygdala activity and memory score).
The null hypothesis would be that there is no association between amygdala activity and memory score, which can be represented as:
H0: r = 0
The type of test would be a Pearson's correlation test, which is a parametric test that assesses the strength and direction of the linear relationship between two continuous variables.
Hence, The test statistic be Pearson's correlation test.
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let ω0, ω1, . . . , ωn−1 denote the n distinct nth roots of unity, so that ωnk = 1 for each k = 0, . . . , n −1. what is the value of the sum ω0 ··· ωn−1? prove your answer.
The sum of the n distinct nth roots of unity is equal to 0, i.e. ω0 + ω1 + ... + ωn-1 = 0.
To prove this:
Consider a complex number z = cos(2π/n) + i sin(2π/n). It is a primitive nth root of unity, i.e.[tex]z^n[/tex] = 1.
Let w = [tex]z^k[/tex] for k = 1, 2, ..., n-1, then w is also a primitive nth root of unity.
So the sum of all the nth roots of unity can be expressed as:
[tex]1 + w + w^2 + ... + w^{(n-1)} = \frac{(1 + w + w^2 + ... + w^{(n-1)}}{z^{(n-1)}} = \frac{(z^n - 1)}{(z - 1) }= 0[/tex]
Hence, the sum of the n distinct nth roots of unity is equal to 0.
A complex number is a number that can be expressed in the form a + bi, where a and b are real numbers, and i is a solution of the equation x2 = −1. It is the combination of a real number and an imaginary number. Complex numbers are used in many areas of mathematics, including algebra, calculus, and number theory.
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determine f(x) and f(x) for the following function. then give the horizontal asymptotes of f, if any. f(x)=4x/8x 6
The function f(x) is defined as f(x) = 4x/8x-6.
This can be simplified to f(x) = 1/2x-3. The horizontal asymptote for this function is y = 0, as its denominator approaches 0 as x approaches infinity or negative infinity.The function f(x) is defined as f(x) = 4x/8x-6. To find the vertical asymptote, we need to set the denominator to 0. We can solve this equation to find that the vertical asymptote of f(x) is x = 6. This means that as x approaches the value of 6, the function approaches infinity. Therefore, the horizontal asymptote of this function is y = 0 and the vertical asymptote is x = 6.
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suppose that the universal set ω = {1,2,···,10}and a= {1,2,3}, b= {x∈ω|2 ≤x≤7}, and c= {7,8,9,10}.
Set a is a subset of ω containing the elements 1,2,3. Set b is a subset of ω containing the elements 2,3,4,5,6,7. Finally, set c is a subset of ω containing the elements 7,8,9,10.
The universal set ω is defined as a set containing all elements that are being considered in a particular problem. In this case, ω is composed of the 10 elements 1,2,3,...,10. Set a is then defined as a subset of the universal set ω, meaning that it contains elements from ω. In this example, set a contains the elements 1,2,3. Set b is also defined as a subset of the universal set ω, meaning that it contains elements from ω. In this example, set b contains the elements 2,3,4,5,6,7, as it is composed of all elements of ω that are greater than or equal to 2 and less than or equal to 7. Finally, set c is defined as a subset of the universal set ω, meaning that it contains elements from ω. In this example, set c contains the elements 7,8,9,10, as it is composed of all elements of ω that are greater than or equal to 7.
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In a survey, the favorite foods of respondents are identified as 1 for italian food comma 2 for mexican food comma 3 for chinese food comma and 4 for anything else. The average (mean) is calculated for 698 respondents and the result is 1. 5.
What is wrong with the given calculation?
A.
The true average? (mean) is
B.
Such data are not counts or measures of? anything, so the average? (mean) needs to be computed in a different way.
C.
Such data are not counts or measures of? anything, so it makes no sense to compute their average? (mean).
D.
There is nothing wrong with the given calculation
Correct Answer : C. Such data are not counts or measures of? anything, so it makes no sense to compute their average? (mean).
The average, also known as the mean, is a measure of central tendency in statistics. It is calculated by adding up a set of values and then dividing the sum by the total number of values in the set. The resulting number represents an estimate of the "typical" or "average" value in the set.
Clearly, the way in which data is collected, makes the collected data for variable "Favourite Food" strictly a categorical variable. It doesn't have any quantitative nature associated with it. So, it makes no sense to compute the mean.
Hence, option C is correct.
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B. The data given are categorical, not numerical or quantitative, which means the average (mean) cannot be found in the usual way. As such, it cannot be computed correctly with the given information.
The given calculation is wrong because the data given are categorical, not numerical or quantitative. This means that the average (mean) cannot be found in the usual way. To find the average (mean) in this case, the total number of respondents (698) must be divided by the number of categories (4) to get the average (mean) for each category. Then, each category can be assigned a numerical value (1 for Italian food, 2 for Mexican food, 3 for Chinese food, 4 for anything else). The numerical values for each category can then be multiplied by the number of respondents who chose that category and added together. Finally, the sum can be divided by the total number of respondents (698) to get the average (mean).
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How many times does a human heart beat in 70 years?
The human heartbeats 2,721,600,000 times in 70 years
Let's say that the human heart beats 1 time in 0.8 sec.
Noe, we need to know the number of seconds in 70 years
Number of months in 70 years = 70 x 12 = 840 months
Number of days in 70 years = 840 x 30 = 25,200 days
Number of hours in 70 years = 25,200 x 24 = 604,800 hours
Number of seconds in 70 years = 604,800 x 3600
= 2,177,280,000 seconds
Number of times a heartbeat in 0.8 sec = 1 time
Number of times a heartbeat in 2,177,280,000 seconds = (1/0.8) x 2,177,280,000
= 2,721,600,000 times
≈ 2.7 billion times
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A right triangle is described as having an angle of measure six less than negative two times a number, and a right angle. What are the measures of the angles in degrees
A right triangle consists of a right angle, another angle that is three less than negative one-fourth of a number, and an angle that is six less than negative two times a number. x = -44 and the angles are 90°, -2x - 6, and -1/x - 3. In the provided triangle, the necessary angles' measurements are 90°, 82°, and 8°.
What is the right triangle's rule?The hypotenuse's square is equal to the sum of the squares of the other two sides of a right triangle, according to the Pythagorean rule.
What angle does a right triangle supposedly possess?A triangle is said to be right-angled if any one of its internal angles measures 90 degrees.
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4. Using Kelly's triangle, what is the slope of
the graph?
You're looking for the slope of the line that forms the triangle's hypotenuse (the diagonal). The slope formula's "rise" and "run" parameters are the two "legs" of the triangle. Slope is a climb or a run.
What is the Slope Triangle?You may determine a line's slope using a slope triangle, which is a visual aid. Slope refers to how steep something is.
Consider ascending 1,000 feet in the air while piloting a plane. You have advanced (horizontally) 3,000 feet when you are 1,000 feet above the ground. You can calculate how steep your rise was using these two measurements.
The inclination is determined by the height at which the plane rises while moving a predetermined distance forward.
To put it another way, it aids in determining the slope of the line linking the plane's starting point and current location.
Triangle with an airplane slope
You may have seen the following slope formula:
Slope: climb / run
The rise is the triangle's vertical distance. Horizontal distance is measured as the run. For our aircraft, we receive:
Slope is equal to 1,000/3,000 feet, or one-third.
In other words, the plane rises one foot vertically for every three feet it moves across the ground.
The ascension of a plane is steeper if it is 2,000 feet above the earth after moving ahead 3,000 feet. It has advanced further vertically for the same horizontal distance. The triangle's slope is less flat in this instance.
Longer is the triangle's horizontal leg.
Slope is defined as: rise/run = 2,000 ft/3,000 ft = 2/3
1/3 is a smaller climb slope for the first airplane than 2/3 is for the second. More steeply ascending is the second aircraft.
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How many gallon of a 14%-alt olution mut be mixed with 6 gallon of a 25%-alt olution to obtain a 20%-alt olution?
The no of gallon of a 14%-salt solution must be mixed with 6 gallon of a 25%-salt solution to obtain a 20%-salt solution is 5 gallon
What is Gallon?
The gallon is a volume unit used in imperial and customary units in the United States. There are now three versions in use: the imperial gallon, which is equal to 4.54609 litres
Given
14%-alt solution must be mixed with 6 gallon of a 25%-salt solution to obtain a 20%-salt solution
.14x +.25*6 = .20(x+6)
.14x + 1.5 = .20x + 1.2
.14x - .20x = 1.2 - 1.5
-0.06x = -0.3
x = 5 gallon
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The no of gallon of a 14%-salt solution must be mixed with 6 gallon of a 25%-salt solution to obtain a 20%-salt solution is 5 gallon
What is Gallon?
A gallon is a volume unit used in imperial and customary units in the United States. There are now three versions in use: the imperial gallon, which is equal to 4.54609 litres
Given
14%-alt solution must be mixed with 6 gallon of a 25%-salt solution to obtain a 20%-salt solution
.14x +.25*6 = .20(x+6)
.14x + 1.5 = .20x + 1.2
.14x - .20x = 1.2 - 1.5
-0.06x = -0.3
x = 5 gallon
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In thi activity, you'll analyze everal gym memberhip plan to help Mateo elect the one that i bet for him. What information do you think will be important in helping Mateo decide?
Mateo will be able to choose a gym membership plan that best meets his needs and budget.
To help Mateo decide on the best gym membership plan, the following information would be important:
Cost: the price of each plan, including any sign-up fees or monthly fees.Location: the proximity of the gym to Mateo's home or workplace.Amenities: what each gym offers, such as equipment, classes, and hours of operation.Contract terms: the length of the commitment and any cancellation policies.Reputation: the quality of the gym, including customer reviews and ratings.Personal fitness goals: what Mateo wants to achieve through his gym membership, such as weight loss or strength training.Special features: any additional features that may be important to Mateo, such as access to a pool or sauna.By considering these factors, Mateo will be able to choose a gym membership plan that best meets his needs and budget.
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if a ray of light strikes mirror 1 with an angle of incidence of 41 ∘ , find the angle of reflection of the ray when it leaves mirror 2.
The angle of reflection for the ray leaving mirror 2 will be 41 degrees, as this is equal to the angle of incidence for the ray striking mirror 2.
The angle of incidence is the angle between the incoming ray and the surface of the mirror, and the angle of reflection is the angle between the reflected ray and the surface of the mirror.
In the given scenario, a ray of light strikes mirror 1 with an angle of incidence of 41 degrees.
The angle of reflection can be calculated using the law of reflection, which states that the angle of incidence is equal to the angle of reflection.
Therefore, the angle of reflection of the ray when it leaves mirror 1 will be 41 degrees.
However, the ray of light continues its journey and strikes mirror 2.
When this happens, the angle of incidence is the angle between the reflected ray from mirror 1 and the surface of mirror 2.
The angle of reflection for the ray leaving mirror 2 can be calculated using the same law of reflection.
The angle of reflection will be equal to the angle of incidence, which is 41 degrees.
The angle of reflection is a crucial concept in understanding the reflection of light and is used in various applications such as mirrors, prisms, and lenses.
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Suppose a shoe factory produce both low grade and high grade shoes. The factory produces at least twice as many low grade as highgrade shoes. The maximum possible production is 500 pairs of shoes. A dealer calls for delivery of at least 100 high garde pairs of shoes per day. Suppose the operation makes a profit of birr 2. 00 per a pair of shoes on high grade shoes and birr 1. 00 per pairs of shoes on low grade shoes. How many pairs of shoes of each type should be produced for maximum profit?
Factory should produce 100 high-grade shoes and 200 low-grade shoes for maximum profit.
Let x be the number of high-grade shoes produced, then the number of low-grade shoes produced is at least 2x. The maximum number of shoes the factory can produce is 500, so we have the following constraints:
x + 2x ≥ 500 (production constraint)
x ≥ 100 (delivery constraint)
x ≥ 0 (non-negative constraint)
The profit for each type of shoe is given as birr 2.00 for high-grade shoes and birr 1.00 for low-grade shoes, so the total profit is:
Profit = 2x * 2.00 + 1.00 * 2x = 4.00x + 2x = 6.00x
The objective is to maximize the profit, subject to the constraints above. So, the feasible solution is x = 100, which means the factory should produce 100 high-grade shoes and 200 low-grade shoes. This is the maximum possible profit of 600 birr.
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Find m Please and thank you I would really appreciate it
x=6 m<ABD=20 *I think*
Step-by-step explanation:
Find x
plug in your answer
Tamera found the solution of x squared =64 to be x=8
Answer:
x = ± 8
Step-by-step explanation:
x² = 64 ( take square root of both sides )
x = ± [tex]\sqrt{64}[/tex] = ± 8
solutions are x = 8 and x = - 8 , since
8 × 8 = 64 and - 8 × - 8 = 64
Jacob and Jordan are training for track season. Jacob did 39 sit-ups in 30 seconds. Jordan did 59
sit-ups in 50 seconds. Who will likely do more sit-ups in 2 1/2 minutes? Explain.
Answer: Jacob
Step-by-step explanation:
Jacob = 39 sit-ups/30 seconds
Jordan = 59 sit-ups/50 seconds
2.5 minutes = 150 seconds
[tex]Jacob=\frac{39}{30} =\frac{195}{150}[/tex]
[tex]Jordan=\frac{59}{50}=\frac{177}{150}[/tex]
[tex]\frac{195}{150} > \frac{177}{150}[/tex]
To compare the number of sit-ups Jacob and Jordan can do in 2 1/2 minutes, we need to convert their current rates to the same unit of time. Since 2 1/2 minutes is the same as 150 seconds, we can use unit rates to find the number of sit-ups they can do per second.
Jacob's rate is 39 sit-ups in 30 seconds, so his unit rate is:
39/30 sit-ups per second
Simplifying the fraction, we get:
13/10 sit-ups per second
Jordan's rate is 59 sit-ups in 50 seconds, so his unit rate is:
59/50 sit-ups per second
Multiplying the numerator and denominator by 3, we get:
177/150 sit-ups per second
Now we can use these unit rates to estimate the number of sit-ups Jacob and Jordan can do in 2 1/2 minutes:
Jacob's estimated number of sit-ups = unit rate × time
= (13/10 sit-ups per second) × (150 seconds)
= 195 sit-ups
Jordan's estimated number of sit-ups = unit rate × time
= (177/150 sit-ups per second) × (150 seconds)
= 177 sit-ups
Based on these estimates, Jacob is likely to do more sit-ups in 2 1/2 minutes than Jordan, since he can do approximately 18 more sit-ups (195 - 177).
Therefore, Jacob is likely to do more sit-ups in 2 1/2 minutes than Jordan.
question content area top part 1 find the volume of the solid generated when the region bounded by and is revolved about the x-axis.
The volume of a solid generated by rotating a region about the x-axis is an important mathematical concept that can be applied in many real-world situations.
The volume of a solid is a measure of the amount of space that the solid takes up in three-dimensional space.
To find the volume of the solid generated when a region is bounded by an equation and revolved around the x-axis, we use a mathematical formula known as the "method of cylindrical shells."
This method involves slicing the solid into thin cylindrical shells, and then finding the volume of each individual shell. The sum of the volumes of the shells will equal the total volume of the solid.
The formula for the volume of a cylindrical shell is given by
=> V = 2πrh,
where r is the radius of the shell, h is the height of the shell, and π is the mathematical constant pi.
To use the method of cylindrical shells, we need to first determine the top and bottom boundaries of the region, and then graph the region.
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Simplify your answer and write is as a proper fraction mixed number or integer
if RS=x+4, ST=8 and RT=3x then value of RS is 10 units.
What is Equation?Two or more expressions with an Equal sign is called as Equation.
Given that RS=x+4, ST=8 and RT=3x
We have to find RS
RS=RT-ST
x+4=3x-8
Take the variable terms on one side and constants on other side
12=2x
Divide both sides by 2
x=6
So RS is 6+4=10 units
Hence, if RS=x+4, ST=8 and RT=3x then value of RS is 10 units.
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Find the surface area of the prism. _ft2
Answer:
by using the formula hypotension(h) is ? base(b) is 8 and perpendicular(p) is15
h=rootunder( p²+b²)
h=(8)²+(15)²
h=289
A pizza shop sells a medium pizza with a diameter of 12 inches for 15 dollars based off that pricing, what should that pricing for a small pizza cost and a large pizza cost
The pricing for each pizza is given as follows:
Small pizza: $5.Large pizza: $20.How to obtain the pricing for each pizza?The pricing for each pizza is obtained applying the proportions in the context of this problem.
A pizza shop sells a medium pizza with a diameter of 12 inches for 15 dollars, hence the price per inch of the diameter is given as follows:
15/12 = $1.25.
The small pizza has a diameter of 4 inches, hence the price is given as follows:
4 x 1.25 = $5.
The large pizza has a diameter of 16 inches, hence the price is given as follows:
16 x 1.25 = $20.
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Coll.
Find the LCM of each set of numbers.
1. 6, 7
2. 4, 5
5. 6, 11
8. 5, 10
4. 2,5
7. 3, 10
20
obiad hyp
3. 10, 11
6. 8, 10
9. 7,840 A
plate da W S
Answer:
The Lcm of Given Numbers.
1. 6,7 = 42 2. 4,5 = 20 3. 10, 11 = 110
4. 2,5 = 10 5. 6, 11 = 66 6. 8, 10 = 80
7. 3, 10 = 30 8. 5, 10 = 50 9. 7, 8 = 56
Step-by-step explanation:
Ok
best trick for Lcm you can multiply the given number and its answer is your Lcm of given numbers.
Thank you..
a rectangular storage container with an open top is to have a volume of 24 cubic meters. the length of its base is twice the width. material for the base costs 12 dollars per square meter. material for the sides costs 6 dollars per square meter. find the cost of materials for the cheapest such container.\
The cost of the materials for the cheapest rectangular storage container with an open top to have a volume of 24 cubic meters is $288.
Let the width of the base be x, then the length of the base is 2x. The height of the container is
[tex]24/(x2x) = 24/2x^2[/tex].
The total area of the base is[tex]x2x = 2x^2[/tex] and the total area of the sides is
[tex]2(x*24/2x^2) = 24x/x^2[/tex]= 24/x.
The cost of the base is
[tex]2x^2[/tex] * $12 = $24[tex]x^2[/tex] and the cost of the sides is
24/x * $6 = $144/x.
The total cost is $24[tex]x^2[/tex] + $144/x.
To find the cheapest container, we want to minimize the cost, which is equivalent to finding the minimum value of $24[tex]x^2[/tex] + $144/x.
We can use calculus to find the minimum, or we can use trial and error to find a reasonable value for x that minimizes the cost.
For x = 2, the cost is
$24 * [tex]2^2[/tex] + $144/2 = $96 + $72 = $168
which is less than $288.
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Her older sister is making similar wall hangings with a diameter that is 134 inches longer than Poppy's. How much more wire did her sister use per wall hanging than Poppy? Use 3.14 for π. Write your answer as a decimal rounded to the nearest hundredth.
Sister uses 420.76 inches more wire per wall than Poppy.
What is a circle?A circle is a two-dimensional figure with a radius and circumference of 2πr.
We have,
Poppy's diameter = d
Older sister diameter.
D = d + 134
Now,
The circumference of the wall hangings.
= 2πr
= πd
Now,
The circumference of the wall hangings by the older sister.
= πD
= π (d + 134)
The circumference of the wall hangings by the Poppy.
= πd
Now,
The difference between the length of the wire.
= π (d + 134) - πd
= πd + π x 134 - πd
= 3.14 x 134
= 420.76 inches.
Thus,
Sister uses 420.76 inches more wire.
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14. The height (in feet) of the water in a tank each hour after opening its drain can be
estimated by the sequence in the table.
Hours after opening drain 1 2 3 4
Height (feet)
18 15 12 9
a. Write a function that represents the arithmetic sequence.
b. Find and interpret the seventh term. (a)
c. Would the eighth term apply in this situation?
The function that represents the arithmetic sequence is an = 18 + (n - 1)(-3). b. The seventh term is 0. c. No, the eight term won't apply as the water trains in 7 hours.
What is arithmetic sequence?The series where the common difference between any two next words stays constant is known as an arithmetic sequence. Let's review what a sequence is. A collection of numbers that follow a pattern is called a sequence.
The given sequence is 18, 15, 12, 9 ...
The common difference between the consecutive terms is:
d = 15 - 18 = -3
d = -3
The sequence is given by the equation:
an = a + (n-1)d
Substituting the value of d= -3 and a = 18 in the equation we have:
an = 18 + (n - 1)(-3)
The function that represents the arithmetic sequence is an = 18 + (n - 1)(-3).
b. The seventh term can be calculated by substituting the value of n = 7.
a(7) = 18 + (7 - 1)(-3).
a(7) = 18 - 18
a(7) = 0
c. No, the eight term won't apply as the water trains in 7 hours.
Hence, The function that represents the arithmetic sequence is an = 18 + (n - 1)(-3). b. The seventh term can be calculated by substituting the value of n = 7is 0. c. No, the eight term won't apply as the water trains in 7 hours.
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For some people, their degree of honesty and integrity depends heavily on two things: need and opportunity.
This statement suggests that people's honesty and integrity are influenced by situational factors such as the level of need they have for something, and the opportunity that presents itself.
People may be more likely to act with less honesty or integrity when they feel a strong need for something, and when they see an opportunity to fulfill that need. However, it's important to note that this statement is a generalization and not true for everyone, as honesty and integrity are personal traits that can vary greatly between individuals.
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How to convert micrometers to meters
1 micrometer equals 1e-6 meters. Dividing by 1000000 will convert your number from micrometers to meters.
Does equate to m?Microns are denoted by the letter "m," while micrometers are denoted by the letter "." 1 m = 1.00. The size of a micron is one millionth of a meter or 1/25,400 of an inch. Microns, a metric unit of length, are frequently used to quantify particles.The micrometre, sometimes referred to as the micron, is a unit of length in the metric system equal to 0.001 mm, or around 0.000039 inch. Its symbol is m.Micrometer A millimeter and a micrometer are separated by a distance of one thousand. There are 1000 micrometers in a millimeter (mm).1 micrometer equals 1e-6 meters. Dividing by 1000000 will convert your number from micrometers to meters.To learn more about micrometers refer to:
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A tree in Leila's backyard is 61 centimeters high. The tree grows 8 centimeters each month. Within the first month of planting it, Leila trimmed 6 centimeters off its height. She has not trimmed the tree since then. How long has the tree been growing?
The number of months that the tree has been growing is; 8.375 months
How to solve algebra word problems?The general form for the equation of a line in slope intercept form is;
y = mx + c
where;
m is slope
c is y-intercept
Now, we are told that the tree grows 8 centimeters each month. This means the slope is 8 cm.
Now, since she trimmed 6 cm in the first month, it means that the y-intercept will be -6. Thus;
Equation is;
y = 8x - 6
Since the current height is 61 centimeters, then;
61 = 8x - 6
8x = 61 + 6
8x = 67
x = 67/8
x = 8.375 months
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let us call a positive integer $n$ 'fortunate' if the sum of its digits is a multiple of 7, and 'superfortunate' if it is fortunate and if none of the numbers $n 1, n 2,\dots, n 12$ is fortunate. find the smallest superfortunate number.
The smallest superfortunate number is 993
What is super fortunate number?
A Fortunate number, named after Reo Fortune, is the lowest integer m > 1 for which pn# + m is a prime number for a given positive integer n, where the primorial pn# is the product of the first n prime numbers.
What is Prime Number?
A prime number is a natural number larger than one that cannot be calculated as the product of two lesser natural numbers. A composite number is a natural number greater than one that is not prime. 5 is prime, for example, because the only methods to write it as a product, 1 5 or 5 1, involve 5 itself.
993 is the smallest superfortunate number.
You can obtain this by letting the digits of n
be ...a99...9b
where a<9 and there are, say, k 9s. Then look at the results of adding 1,2,3 ... ,12.
The smallest number is 993.
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The smallest superfortunate number is 993
What is super fortunate number?
A Fortunate number, named after Reo Fortune, is the lowest integer m > 1 for which pn# + m is a prime number for a given positive integer n, where the primorial pn# is the product of the first n prime numbers.
What is Prime Number?
A prime number is a natural number larger than one that cannot be calculated as the product of two lesser natural numbers. A composite number is a natural number greater than one that is not prime. 5 is prime, for example, because the only methods to write it as a product, 1 5 or 5 1, involve 5 itself.
993 is the smallest superfortunate number.
You can obtain this by letting the digits of n
be ...a99...9b
where a<9 and there are, say, k 9s. Then look at the results of adding 1,2,3 ... ,12.
The smallest number is 993.
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can somebody PLEASE help me
Show work please
Answer:
B goes to 1
D goes to 2
C goes to 3
A goes to 4
Step-by-step explanation:
Supplementary angles is when two angles equal 180.
For #1, we have 49
Doing 180-49 gives us the first answer of 131
We do the same thing for the other 3
180-114 = 66
180-71 = 109
180-87 = 93
show that the set of all vectors in r4 satisfying the equations is a subspace of r4. find a basis for this subspace.
The set of all vectors in r4 satisfying the equation is,
( x, R , y ) = ( 1 , R , 1/2 ) ( 2 , R , 1 ) ( 3 , R , 3/2 ) ( 4 , R , 2 ) ( 5 , R , 5/2 ) ( 6 , R , 3 ) ( 7 , R , 7/2 ) ( 8 , R , 4 )
A basis for R4 always consists of 4 vectors. (TRUE: Vectors in a basis must be linearly independent AND span.) 4. The union of two subspaces is a subspace.
If S is a subspace of R4, then the zero vector 0=[0000] in R4 must lie in S. 2x+4y+3z+7w+1=0. So 0∉S, and we conclude that S is not subspace of R4.
The space R4 is four-dimensional, and so is the space M of 2 by 2 matrices. Vectors in those spaces are determined by four numbers. The solution space Y is two-dimensional, because second order differential equations have two independent solutions.
The interval of x is known and the relation of x , y is known.
So,
x = 2y ; x = { 1 , 2 , 3 , 4 , 5 , 6 , 7 , 8 }
Then,
1 = 2y , 2 = 2y , 3 = 2y , 4 = 2y , 5 = 2y , 6 = 2y , 7 = 2y , 8 = 2y ,
We can write,
y = { 1/2 , 1 , 3/2 , 2 , 5/2 , 3 , 7/2 , 4 }
Therefore,
The set of all vectors in r4 satisfying the equation is,
( x, R , y ) = ( 1 , R , 1/2 ) ( 2 , R , 1 ) ( 3 , R , 3/2 ) ( 4 , R , 2 ) ( 5 , R , 5/2 ) ( 6 , R , 3 ) ( 7 , R , 7/2 ) ( 8 , R , 4 )
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Cayden has several screws on a scale ,and the scale reads 80.995g.Cayden adds 1 more screw,and scale reads 84.81g. what is mass of the last screw Cayden adds?
Answer:
3.815g
Step-by-step explanation:
[tex]84.810 - 80.995 = 3.815[/tex]
NEED HELP FAST
Find sn
for the arithmetic series where a1=−20 , n=25 , an=148
The value of Sn for the arithmetic series is, 1,600.
What is Arithmetic sequence?An arithmetic sequence is the sequence of numbers where each consecutive numbers have same difference.
We have to given that;
For the arithmetic series,
⇒ a₁ = - 20
⇒ n = 25
⇒ an = 148
Now, We know that;
The nth partial sum of an arithmetic sequence can be calculated using the first and last terms as follows:
⇒ Sn = n(a₁ + an) / 2
Hence, Substitute all the given values, we get;
⇒ Sn = n(a₁ + an) / 2
⇒ Sn = 25(- 20 + 148) / 2
⇒ Sn = 25 × 128 / 2
⇒ Sn = 1600
Thus, The value of Sn for the arithmetic series = 1,600.
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