The successfullly completed the proof of the cancellation property of vector addition.
Complete proof of the cancellation property of vector addition:Let u, v, and w be vectors in a vector space V such that u + w = v + w. We have to show that u = v. We know that the cancellation property of vector addition states that for all vectors u, v, and w in a vector space V, if u + w = v + w, then u = v.So, u + w = v + w can be written as, u + w - w = v + w - w, applying subtraction on both sides.u + 0 = v + 0 (as - w + w = 0)0 is an additive identity, so it can be dropped off.u = v, which is the desired result.The statement "u + w = v + w" was given, and we have shown that it implies that "u = v". Hence, we have successfully completed the proof of the cancellation property of vector addition.
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GEOMETRY:
a pile standing vertically casts a 19 ft shadow. At the same time, a 6 ft person near the beam casts a shadow 4’6’’. What is the height of the pole?
Answer:
X / 19 = 6 / 4.5 both person and pile have same ratio of shadow
X = 6 / 4.5 * 19 = 25.3 ft
what are the X intercept of the graph of the following equation y=x^2 - 64
Step-by-step explanation:
Here is one way :
at the x-axis intercepts , the value of 'y' = 0 (obviously)
0 = x^2 -64
x^2 = 64
x = ± 8
Write an expression that can be a rule for the number sequence below.
5, 9, 13, 17, 21, …
The possible expression that can be a rule for the number sequence is:[tex]$a_n = 4n + 1$[/tex],
What is expression?As an illustration, the expression x + y is one where x and y are words with an addition operator in between. There are two types of expressions in mathematics: numerical expressions, which only comprise numbers, and algebraic expressions, which also include variables.
According to question:
One possible expression that can be a rule for the number sequence is:
[tex]$a_n = 4n + 1$[/tex], where n is the position of the term in the sequence.
Using this expression, we can find the values of the first few terms as follows:
[tex]$a_1 = 4(1) + 1 = 5$[/tex]
[tex]$a_2 = 4(2) + 1 = 9$[/tex]
[tex]$a_3 = 4(3) + 1 = 13$[/tex]
[tex]$a_4 = 4(4) + 1 = 17$[/tex]
[tex]$a_5 = 4(5) + 1 = 21$[/tex]
Thus, possible expression that can be a rule for the number sequence is:[tex]$a_n = 4n + 1$[/tex],
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Answer:
5n, where n is equal to 0, 1, 2, 3, 4
Step-by-step explanation:
5, 9, 13, 17, 21,
the quadratic sequence: 44; 52; 64; 80; Write down the next two terms of the sequence. Determine the nth term of the quadratic sequence. Calculate the 30th term of the sequence. Prove that the quadratic sequence will always have even terms.
To find the next two terms of the sequence, we need to first find the common difference between consecutive terms:
52 - 44 = 8
64 - 52 = 12
80 - 64 = 16
We notice that the common difference is increasing by 4 for each term. Therefore, the next two terms of the sequence are:
80 + 20 = 100
100 + 24 = 124
To determine the nth term of the quadratic sequence, we can use the formula:
an = a1 + (n-1)d + bn^2
where a1 is the first term, d is the common difference, b is the coefficient of n^2, and n is the term number.
Using the first four terms of the sequence, we can form a system of equations:
44 = a1 + b
52 = a1 + d + b
64 = a1 + 2d + b
80 = a1 + 3d + b
Solving for a1 and b, we get:
a1 = 20
b = 24
Substituting these values into the formula for an, we get:
an = 20 + (n-1)4 + 24n^2
an = 24n^2 + 4n - 4
To find the 30th term of the sequence, we simply substitute n = 30 into the formula we just derived:
a30 = 24(30)^2 + 4(30) - 4
a30 = 21,596
To prove that the quadratic sequence will always have even terms, we notice that the first term is even (44 = 2 x 22), and the common difference is even (8 = 2 x 4). Therefore, every term of the sequence can be expressed as an even number plus an even multiple of n^2, which is always even. Hence, the quadratic sequence will always have even terms.
Step-by-step explanation:
Sequence is 44;52;64;80;.....44;52;64;80;.....
General formula is Tn=2n2+2n+40
How do I solve this?
Answer:
X+4
Step-by-step explanation:
Area = l *b
x^2 + 13x + 36 = (X+9) * b
x^2 + 9x + 4x + 36 = (X+9) * b
X(X+9) + 4(X+9) = (X+9) * b
(X+4) (X+9) = (X+9) * b
b = (X+4)
The location of the incenter of ABC is:
A. Point D
B. Point F
C. Point E
Offering brainliest
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Fill in the blanks below in order to justify whether or not the mapping shown represents a function.
Answer:
Step-by-step explanation:
the second blank is wrongt
After 6 new students entered the Happy Hearts Childcare Center and 2 students exited, there were 3 times as many students as before. How many students were present before students entered and exited the center?
Answer: 2
Step-by-step explanation:
If there are three times as many students when there are 6 students you do 6 divided by three to give you two.
The linear scale factor of two similar shapes is 4:7. If the area of the bigger
shape is 392 , find the area of the smaller one.
Answer:
224
Step-by-step explanation:
392 ÷ 7 = 56
56 *4 = 224
hope this helps
For which function does g decrease by 25% every time x increases by 1?
A g(x) = 0.75
B) g(x) = 75
g(x) = 0.25
D g(x) = 25*
We pIug this function into the equation above, we get: g(x+1) = 0.
Assume that g(x) is a function that decreases by 25% for every one increase in x.
This means that if we increase x by one, the vaIue of g(x) wiII be 75% of what it was befοre.
In other words, if g(x) is the function's vaIue at x, then g(x+1) is 0.75 times g. (x).
As a resuIt, we can express g(x+1) in terms of g(x) as foIIows:
g(x+1) = 0.75 * g(x) (x)
Let's see which οption meets this requirement.
A) g(x) = 0.75: When we pIug this function into the equation above, we get:
g(x+1) = 0.75 * 0.75 = 0.5625 * g(x) (x)
This means that increasing x by one increases g(x) by 25%. As a resuIt, this optiοn does not meet the condition.
B) g(x) = 75: When we pIug this function into the equation above, we get:
g(x+1) = 0.75 * 75 = 56.25
This means that increasing x by οne decreases g(x) by more than 25%.
As a resuIt, this option does not meet the condition.
C) g(x) = 0.25: When we pIug this function into the equatiοn above, we get:
g(x+1) = 0.75 * 0.25 = 0.1875 * g(x) (x)
This means that increasing x by one decreases g(x) by more than 25%. As a resuIt, this optiοn does not meet the cοndition.
D) g(x) = 25*: When we pIug this function into the equation above, we get:
g(x+1) = 0.
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Cοmplete question:
For which function does g decrease by 25% every time x increases by 1?
A) g(x) = 0.75
B) g(x) = 75
C) g(x) = 0.25
D) g(x) = 25*
A box with a square base and open top must have a volume of 62500 cm3. We wish to find the dimensions of the box that minimize the amount of material used. First, find a formula for the surface area of the box in terms of only x, the length of one side of the square base. [Hint: use the volume formula to express the height of the box in terms of x.] Simplify your formula as much as possible. A(x) = Next, find the derivative, A'(x). A'(x) = Now, calculate when the derivative equals zero, that is, when A'(x) = 0. [Hint: multiply both sides by x² .] A'(x) = 0 when x =
The area of the square base = x².
we have:l = w = x ... (2) ... And, h = V/lw = V/x² ... (3) ...
The dimension of the box that minimizes the amount of material used is x = (2V)1/3. A(x) = x² + 4V/x, A'(x) = 2x - 4V/x², x = (2V)1/3
The given volume of the box is 62500 cm³. We wish to find the dimensions of the box that minimize the amount of material used.
To obtain the formula for the surface area of the box in terms of only x, the length of one side of the square base, we use the formula for the volume of a box:V = lwh ... (1) ... where V is the volume, l is the length, w is the width, and h is the height of the box. Here, the base of the box is a square with side length x.
Hence, the area of the square base = x². Therefore, we have:l = w = x ... (2) ... And, h = V/lw = V/x² ... (3) ... We can substitute (2) and (3) in (1) to get the formula for V in terms of x as follows:V = x² V/x² A(x) = A(x) = x² + 4xhA(x) = x² + 4x(V/x²) = x² + 4V/x
Now, to find the derivative A'(x) of A(x), we differentiate A(x) with respect to x:A'(x) = 2x - 4V/x² A'(x) = 0 when x = (2V)1/3. Therefore, the dimension of the box that minimizes the amount of material used is x = (2V)1/3. A(x) = x² + 4V/x, A'(x) = 2x - 4V/x², x = (2V)1/3
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suppose you start at the origin, move along the x-axis a distance of 7 units in the positive direction, and then move downward a distance of 6 units. what are the coordinates of your position? (x, y, z)
The coordinates of your position If we start at the origin, we are moving only along the x-axis of a distance of 7 units in positive direction and then only in the negative y-axis direction and z-coordinate is zero are (7,-6,0).
The origin is the point in space that has a position of (0, 0, 0), which represents the point where the x, y, and z axes intersect.
The first step is to move 7 units in the positive x direction. The positive x direction is the direction in which x values increase. Therefore, we move to the right along the x-axis to the point (7, 0). This means that we have moved 7 units along the x-axis, and our position is now (7, 0, 0).
The second step is to move downward a distance of 6 units. Since we are not moving in the x direction, we are only changing our position along the y-axis. Moving downward in the y direction means decreasing our y-coordinate. Therefore, we move 6 units downward from our current position to the point (7, -6, 0).
Therefore, the coordinates of our position are (7, -6, 0)
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Anna has n number of nickels. She has less than 45 cents. Which inequality could
be used to find the value of n?
A $0.05n< $0.45
B $0.05n > $0.45
C $0.05n ≤ $0.45
D $0.05n ≥ 0.45
Answer:
A $0.05n< $0.45
Step-by-step explanation:
It is given that she has "less than" rather than "less than or equal to" 45 cents. Therefore, your answer will contain the "less than" sign, which is signified as <.
Therefore, being the only answer with <, your answer will be A.
A nickel is $0.05, therefore:
$0.05 of n is less than $0.45, or $0.05n< $0.45
A) $0.05n < $0.45 is your answer.
~
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what is an equation of the line that passes through the points (5 -6) and (-5 -2)
Answer:
7
Step-by-step explanation:
A(-5,−2) , B(5,−6)
Equation of line AB⟹
(5-6), (-5-2) = 3+3 = 6+1= 7
A shipping company is packing a box with one cubic centimeters blocks. The box is 14 centimeters long. 12 centimeters wide and 16 centimeters high. How many one cubic centimeter blocks will fill the box ?
The shipping company will need 2,688 one cubic centimeter blocks to fill the box.
The volume of the box can be calculated as:
Volume = length x width x height
Volume = 14 cm x 12 cm x 16 cm
Volume = 2,688 cubic cm
Since each block is also one cubic cm in volume, we can simply divide the total volume of the box by the volume of one block to find the number of blocks needed to fill the box:
Number of blocks = Volume of box / Volume of one block
Number of blocks = 2,688 cubic cm / 1 cubic cm
Number of blocks = 2,688
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Complete the sequence in the grids so that starting
of a 2x2 board turned off by pressing one at a time on each
grid we reach all the lit squares.
Another strategy is to start by pressing a square in the middle of the grid, and then pressing the squares adjacent to it. This should help you turn off the squares in a cross pattern.
What is sequence?In mathematics, a sequence is an ordered list of elements, typically numbers, which may be finite or infinite. Each element in the sequence is called a term. For example, the sequence {1, 2, 3, 4, 5} is a finite sequence of integers with five terms. Sequences can be represented in several ways, such as listing out the terms, using a formula to generate the terms, or using recursive rules. For example, the sequence of even numbers can be generated using the formula 2n, where n is a positive integer. So, the first five terms of the sequence are 2, 4, 6, 8, 10. Sequences are used in many areas of mathematics, including number theory, calculus, and statistics. They are also used in real-world applications, such as modeling population growth or predicting stock prices.
Here,
One common strategy is to start by pressing one of the corner squares, and then pressing the squares adjacent to it. Then, move to the adjacent corner square and repeat the process. This should help you turn off the squares in one diagonal line.
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a teacher monitored the number of people texting during class each day and calculated the corresponding probability distribution. what type of probability distribution did the teacher use?
The given probability distribution "a teacher monitored the number of people texting during class each day and calculated the corresponding probability distribution." is a type of discrete probability distribution.
What is the Probability distribution?The probability distribution is used to describe the probability of each outcome in a series of possible outcomes. It is a mathematical representation of the outcomes of an experiment.
The teacher likely used a discrete probability distribution to calculate the probability of a certain number of people texting during class each day.
A discrete probability distribution is used to analyze data where the outcome is counted in whole numbers, such as the number of people texting in a given class period.
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WILL GIVE BRAINLIEST HELP
Answer:
D= 7(2g-H)/U
Step-by-step explanation:
Help pls
I need three answers
The value οf x fοr the expressiοn must be simplified is 12,32,48.
What is expressiοn?Expressiοns in mathematics must cοntain a statement, at least οne arithmetic οperatiοn, at least twο numbers οr variables, οr bοth. With the help οf this mathematical οperatiοn, οne can multiply, divide, add, οr subtract.
Unknοwn variables, numbers, and arithmetic οperatοrs make up an algebraic expressiοn. There are nο symbοlic representatiοns οf equality οr inequality in it.
Here since 71 is a prime number , [tex]\sqrt{71}[/tex] cannot be simplified itself.
Then [tex]\sqrt{71x}[/tex] can only be further simplified if [tex]\sqrt{x}[/tex] itself can be simplified.
Here , amοng the given chοices,
=>12 = 4*3 [ 4 is perfect square] , sο it can be simplified.
=> 32 = 16*2 [16 is perfect square] , sο it can be simplified.
=> 48 = 16*3 [ 16 is perfect square] , sο it can be simplified.
Hence the value οf x fοr the expressiοn must be simplified is 12,32,48.
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The sum of the base and the height of a triangle is 22 cm. Find the dimensions for which the area is a maximum. The triangle with maximum area has a height of_____cm and a base of cm_____.
The dimensions of the triangle with maximum area are a base of 11 cm and a height of 11 cm.
We are given that the sum of the base and height of a triangle is 22 cm. Let's call the base of the triangle "b" and the height "h". Then we have the equation:
b + h = 22
We want to find the dimensions of the triangle that will give us the maximum area.
The formula for the area of a triangle is A = (1/2)bh.
We can use the equation b + h = 22 to solve for one of the variables in terms of the other.
we can solve for h:
h = 22 - b
Substituting this into the formula for the area, we get:
A = (1/2)b(22 - b)
The equation 0 = 11b - (1/2)b² can be rearranged to:
(1/2)b² - 11b = 0
We can then use the quadratic formula to solve for "b"
b = 11 ± 11
So the value of b that gives us the maximum area is b = 11 cm. Substituting this back into the equation h = 22 - b, we get:
h = 22 - 11 = 11 cm
Triangle has a base of 11 cm and a height of 11 cm.
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Picture Shown Below with question:
Answer: 23
Step-by-step explanation:
Vertical angles are congruent (equal) so you first make the equations for angle A and B equal to each other and solve for x.
x + 15 = 5x - 17
32 = 4x
x = 8
Plug the x value (8) back into either equation to find the measure of angle B.
x + 15
8 + 15 = 23
Tiago sells sunflower oil in large tins and extra-large tins.
The large tin and the extra-large tin are mathematically similar.
The volume of the extra-large tin is 75% more than the volume of the large tin. Both tins are cylinders.
The radius of the large tin is 20 cm.
Calculate the radius of the extra-large tin.
Answer:
24 cm (to nearest cm)
Step-by-step explanation:
XLV = extra large tin volume (cm³)
LV = large tin volume (cm³)
XLR = extre large tin radius (cm)
LR = large tin radius (cm) = 20
XLV = 1.75 × LV
Since the tins are geometrically similar cylinders, we can infer that the volumes and radii of the 2 tins are related;
We know the relationship between the volume of the two tins, i.e. the XL tin is 75% greater in volume than the L tin;
This means the volumetric scale factor or multiplier is ×1.75;
Subsequently, we know:
XLV = 1.75 × LV
Similarly, there is a relationship between the radii of the tins;
The relationship is, however, slightly different;
[tex]XLR = (\sqrt[3]{1.75}) \times LR[/tex]
We need to take the cube root of the volumetric scale factor, reason being, the radius is a linear dimension unlike volume;
Easy way to figure this is radius is in cm, volume is in cm³;
So:
XLR = 1.205... × LR
XLR = 1.205... × 20
XLR = 24.101... --> 24 cm (to nearest cm)
3. Find the sine of angle in the triangle below.
8
7
Answer:
90 degrees then decreace that then turn that into a fraction
Step-by-step explanation:
A middle school teacher estimates that 170 parents will attend the back to school informational meeting. A total of 147 parents actually attended the meeting. What is the percent error of the teacher's estimate rounded to the nearest tenth of a percent
The percent error from the real and estimated values is 16%.
What is percent error?The difference between a precise value and an approximation to it is the approximation error in a data value. Either an absolute mistake or a relative error can be used to describe this error. It is possible for measurement mistake or computing machine precision to produce an approximation error. The percent error is the distinction between the estimated value and the real value in relation to the actual value. In other terms, the relative error is multiplied by 100 to calculate the percent error.
The estimated value= 170
the real value= 147
Percent error ={ (170-147)/147}*100= 0.1564*100
Percent error = 15.64% ≈ 16%
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Storyboards are a helpful part of the design process because the storyboard develops
A) A pseudocode description of the algorithm being designed
B) The mathematical formulas required for computing a correct answer
C) What information is needed to solve the problem, and how to present that information
D) The amount of time and space it will require to find a solution
The correct option among the four options that are given in the question is option C. The storyboard is a helpful part of the design process because the storyboard develops what information is needed to solve the problem, and how to present that information.
What is a storyboard?
A storyboard is a graphic organizer that consists of illustrations or images shown in sequence for the purpose of pre-visualizing a motion picture, animation, motion graphic or interactive media sequence. A storyboard is created to provide a visual representation of how a story will unfold on a screen.Storyboards are important in the design process because they help designers understand the complexity of a particular problem and come up with a plan to solve it. The storyboard can be used to explain how the user will interact with the software, what functions are necessary, what data is required, and how the data will be displayed on the screen. Storyboards help designers visualize the user's experience and think through the design process. They are an essential tool for designers who want to create engaging, user-friendly software or interfaces.
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Is this a compound?
First, Gabriel planted the geraniums in a clay pot, and then he placed the pot on a sunny windowsill in his kitchen
A. YES
B. NO
Answer:
yes it is right now you can write it
BP = FC + VCM
The fixed costs associated with the fundraiser include: one-time charges of art ($45), screen and set-up ($60),
and advertising ($50 for a newspaper ad). In addition, the unit cost of the sweatshirt will be $16.50 per sweatshirt, with an additional charge of $.50 per shirt for shipping and individual plastic wrap. You plan to sell the sweatshirts for a retail price of $22.
A. Calculate breakeven in units.
B.calculate breakeven in dollars
1. The breakeven in units equals 31 units.
2. The dollar amount to breakeven is
What is the breakeven in units?The variable cost per unit includes the cost of the sweatshirt ($16.50) and the additional charge for shipping and plastic wrap ($0.50), so the total variable cost per unit is:
= $16.50 + $0.50
= $17.00
The contribution margin per unit is:
= 22.00 - $17.00
= $5.00
The fixed costs include the one-time charges of art ($45), screen and set-up ($60), and advertising ($50), so the total fixed costs are:
= $45 + $60 + $50
= $155
Using the breakeven formula, we can calculate the number of units required to break even:
= Fixed costs / Contribution margin per unit
= $155 / $5.00
= 31 units
What is the breakeven in dollars?To calculate the breakeven in dollars, we need to multiply the breakeven in units by the selling price per unit:
The breakeven in dollars equals to:
= Breakeven in units x Selling price per unit
= 31 x $22.00
= $682.00
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For random variable X~N(3,0.75), what is the probability that X takes on a value within two standard deviations on either side of the mean?
Answer:For random variable X~N(3,0.75), what is the probability that X takes on a value within two standard deviations on either side of the mean?
Step-by-step explanation:
Part III: Short Answer Items (Worth 3 points) Instruction: Write the most simplified answer on the blank space provided for each of them. 11. If the price of an item is Birr 9,500 before VAT, then the total cost of the item including VAT
According to the VAT rate, the total cost of the item including VAT is Birr 10,925 assuming a VAT rate of 15%.
What is VAT rate ?
VAT (Value Added Tax) rate is a percentage that is added to the price of goods or services. VAT is usually charged on top of the base price of a product or service, and the total price is calculated as (base price) + (base price x VAT rate). The VAT rate is typically set by the government and may be subject to change over time.
To find the total cost of the item including VAT, we need to know the VAT rate.
Let's assume the VAT rate is 15%. To calculate the VAT amount, we can multiply the price before VAT by the VAT rate:
VAT amount = 0.15 x 9,500 = Birr 1,425
The total cost of the item including VAT is the sum of the price before VAT and the VAT amount:
Total cost = 9,500 + 1,425 = Birr 10,925
Therefore, the total cost of the item including VAT is Birr 10,925 assuming a VAT rate of 15%.
To know more about VAT rate visit:
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