Answer:
Step-by-step explanation:
To determine how many times smaller 1.2 x 10^6 is than 1.47 x 10^7, we need to divide the larger number by the smaller number:
1.47 x 10^7 / 1.2 x 10^6 = 12.25
Therefore, 1.2 x 10^6 is approximately 12.25 times smaller than 1.47 x 10^7.
To confirm this result, we can also calculate the difference between the two numbers:
1.47 x 10^7 - 1.2 x 10^6 = 1.35 x 10^7
So 1.2 x 10^6 is approximately 1/12.25 = 0.0816 times as large as 1.47 x 10^7.
True or false: There is no tax jump from 0.33E − 15,207.50 to 0.35E − 21,346.50.
true
false
The given statement "There is no tax jump from 0.33E − 15,207.50 to 0.35E − 21,346.50" is false.
The tax jump from 0.33E − 15,207.50 to 0.35E − 21,346.50 is not zero. Let us look at how this is not true.
Firstly, 0.33E − 15,207.50 and 0.35E − 21,346.50 are both amounts of tax that need to be paid. E here stands for exponential notation of the number 10.
For example, 0.33E − 15,207.50 = 0.33 x 10 ^ -15,207.50.
This means that 0.33E − 15,207.50 is 0.33 multiplied by 10 raised to the power of -15,207.50.
Similarly, 0.35E − 21,346.50 = 0.35 x 10 ^ -21,346.50 which means 0.35E − 21,346.50 is 0.35 multiplied by 10 raised to the power of -21,346.50.
It is important to note that the power of E in 0.35E − 21,346.50 is higher than that of 0.33E − 15,207.50. This means that the second tax amount is lower than the first.
However, the tax jump from 0.33E − 15,207.50 to 0.35E − 21,346.50 is still not zero. A tax jump is the difference in the amount of tax paid between two different amounts.
Therefore, the difference between the two taxes is:
= 0.35 x 10 ^ -21,346.50 - 0.33 x 10 ^ -15,207.50
= 0.002E-2134650 - 0.0033E-1520750
= 0.00000167 - 0.000033 = -0.00003133
The tax jump is equal to 0.00003133 which is not zero.
Therefore, the given statement is false.
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For 0 ≤ t ≤ 2π, a particle is moving along the x-axis. The position of the particle is given by x(t) =
e
t
2 cos (
t
2
). The velocity of the particle is given by v(t) = 1
2
e
t
2
(cos (
t
2
) − sin (
t
2
)).
a) Find the time t at which the particle is farthest to the left. Justify your answer.
b) Is the speed of the particle increasing or decreasing at time t = π? Justify your answer.
c) The total distance traveled by the particle can be expressed as ∫ v(t) dt k
0
− ∫ v(t) dt 2π
k
. What is the
value of k? Justify your answer.
a) The particle is farthest to the left at t = 0.
b) The speed of the particle is decreasing at t = π.
c) The value of k is 2π.
a) To find the time at which the particle is farthest to the left, we need to determine when the particle's position is at its minimum on the x-axis. The position function x(t) = [tex]e^t^2 cos(t^2)[/tex] represents the particle's position at time t.
To find the minimum, we can take the derivative of x(t) with respect to t and set it equal to zero. Let's differentiate x(t) to find the velocity function v(t):
v(t) = [tex](1/2)e^t^2 (cos(t^2) - sin(t^2))[/tex]
Next, we solve the equation v(t) = 0 to find the critical points:
0 = [tex](1/2)e^t^2 (cos(t^2) - sin(t^2))[/tex]
Since [tex]e^t^2[/tex] is always positive, the critical points occur when cos([tex]t^2[/tex]) - sin([tex]t^2[/tex]) = 0. By solving this equation, we find that it is true for t = 0 and t = π/2.
Now, to determine which critical point corresponds to the particle being farthest to the left, we evaluate the positions at t = 0 and t = π/2:
x(0) = [tex]e^0^2 cos(0^2)[/tex]= 1 * 1 = 1
x(π/2) = e(π/[tex]2)^2[/tex] cos((π/[tex]2)^2[/tex]) = [tex]e^{(\pi ^{2/4)[/tex] * 0 = 0
The particle is farthest to the left when x(0) = 1. Therefore, the particle is farthest to the left at t = 0.
b) To determine if the speed of the particle is increasing or decreasing at t = π, we need to analyze the velocity function v(t).
Let's calculate the derivative of v(t) with respect to t to find the acceleration function a(t):
a(t) = [tex]d(v(t))/dt[/tex] = [tex]d^2x(t)/dt^2[/tex] = [tex]e^t^2 * (-2t^2[/tex] - 2) * [tex]sin(t^2)[/tex]
To determine if the speed is increasing or decreasing, we need to evaluate a(t) at t = π. Plugging in t = π into the acceleration function, we have:
a(π) = [tex]e^\pi ^2 * (-2\pi ^2[/tex] - 2) * si[tex]n(\pi ^2[/tex]) = [tex]e^\pi ^2 * (-2\pi ^2[/tex] - 2) * 0 = 0
Since the acceleration at t = π is zero, the speed of the particle is neither increasing nor decreasing at that time.
c) The total distance traveled by the particle can be calculated by integrating the absolute value of the velocity function v(t) with respect to t over the interval [0, 2π]. The expression given is:
∫ v(t) dt from 0 to k − ∫ v(t) dt from 0 to 2π
To find the value of k, we can evaluate the integral on the right side:
∫ v(t) dt from 0 to 2π = ∫ [(1/[tex]2)e^t^2[/tex] (co[tex]s(t^2[/tex]) - [tex]sin(t^2[/tex]))] dt from 0 to 2π
Evaluating this integral gives us the total distance traveled by the particle over the interval [0, 2π]. Since k represents a different upper limit, the integral from
0 to k will give us the distance traveled up to the time t = k.
To find the value of k, we need to find the total distance traveled. Since the integral from 0 to 2π represents the total distance, we have k = 2π.
Therefore, the value of k is 2π.
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Direction:Simplify the following radical expressions using the laws of radicals
E} The simplified form of √(1/32) is 1/(4√2). A) the simplified form of [tex]√18x^4y^6z^8 is 3xy^3z^4√2.[/tex]
1. To simplify √18x^4y^6z^8, we can break down the radicand into its prime factors:
[tex]√(18x^4y^6z^8) = √(2 × 3^2 × x^2 × y^3 × z^4 × z^4)[/tex]
Next, we can simplify the square roots of perfect squares within the radicand:
√(2 × 3^2 × x^2 × y^3 × z^4 × z^4) = 3xy^3z^4√2
Therefore, the simplified form of √18x^4y^6z^8 is 3xy^3z^4√2.
2. To simplify √(1/6), we can rationalize the denominator:
√(1/6) = √(1)/(√(6))
Multiplying the numerator and denominator by √(6), we get:
√(1/6) = √(1)√(6)/√(6)√(6)
Simplifying further, we have:
√(1/6) = √(6)/6
Therefore, the simplified form of √(1/6) is √(6)/6.
3. To simplify 12√(8x^6y^3), we can break down the radicand into its prime factors:
[tex]12√(8x^6y^3) = 12√(2 × 2 × 2 × x^2 × x^2 × x^2 × y)[/tex]
Next, we can simplify the square roots of perfect squares within the radicand:
12√(2 × 2 × 2 × x^2 × x^2 × x^2 × y) = 12(2x^3)√2y
Therefore, the simplified form of 12√(8x^6y^3) is 24x^3√(2y).
4. To simplify 3√(16m^5n^7), we can break down the radicand into its prime factors:
3√(16m^5n^7) = 3√(2 × 2 × 2 × 2 × m × m × m × m × m × n × n × n × n × n × n × n)
Next, we can simplify the cube roots of perfect cubes within the radicand:
3√(2 × 2 × 2 × 2 × m × m × m × m × m × n × n × n × n × n × n × n) = 3(2m^2n^2)√(2mn)
Therefore, the simplified form of 3√(16m^5n^7) is 6m^2n^2√(2mn).
5. To simplify √(1/32), we can rationalize the denominator:
√(1/32) = √(1)/(√(32))
Since 32 can be simplified to 16 × 2, we have:
√(1/32) = √(1)/(√(16 × 2))
Taking the square root of 16 and simplifying further, we get:
√(1/32) = 1/(4√2)
Therefore, the simplified form of √(1/32) is 1/(4√2).
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comsider these functions f(x)=-1/2x^2 + 5x and g(x)=x^2+2what is the value of f(g(-2))
The value of f(g(-2)) - 150 is -138.
To find the value of f(g(-2)), we first need to substitute -2 into the function g(x) and then use the result as the input for the function f(x).
Let's start with g(-2). Plugging -2 into the function g(x) gives us:
g(-2) = (-2)^2 + 2
= 4 + 2
= 6
Now, we have the value of g(-2) as 6. Next, we substitute this value into the function f(x):
f(g(-2)) = f(6) = -1/2(6)^2 + 5(6)
= -1/2(36) + 30
= -18 + 30
= 12
Finally, we have found that f(g(-2)) is equal to 12. To find the value of f(g(-2)) - 150, we subtract 150 from the value we obtained:
f(g(-2)) - 150 = 12 - 150
= -138
Therefore, the value of f(g(-2)) - 150 is -138.
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Which shape is always a parallelogram?
a hexagon, because it has 3 pairs of parallel sides
a rectangle, because it has 2 pairs of parallel sides
a trapezoid, because it has 1 pair of parallel sides
a quadrilateral, because it has 4 sides
Answer:
a rectangle, because it has 2 pairs of parallel sides
Step-by-step explanation:
A parallelogram is a two-dimensional figure with two sets of parallel lines and equal opposite-interior angles. A hexagon has too many sides to qualify, trapezoids only have one set of parallel lines, and quadrilaterals can have anywhere from 0 to 2 sets of parallel sides. Because of this, these three other options are eliminated
A rectangle is always a parallelogram because, by definition, a parallelogram is a four-sided plane rectilinear figure with opposite sides parallel which fits the description of a rectangle.
Explanation:The correct answer to which shape is always a parallelogram is a rectangle, because it has 2 pairs of parallel sides. By definition, a parallelogram is a four-sided plane rectilinear figure with opposite sides parallel. This means that a quadrilateral with two sets of parallel sides is a parallelogram, which fits the description of a rectangle. Other options like hexagon and trapezoid do not always adhere to this definition and hence can't be considered as a parallelogram.
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Scores on a history test have an average of 80 with a standard deviation of 6. What is the z-score for a student who earned a 75 on the test?
The z-score for a student who earned a 75 on the history test is -5/6.
To calculate the z-score for a student who earned a 75 on the history test, we need to use the formula:
z = (x - μ) / σ
Where:
x is the individual score (75 in this case),
μ is the population mean (average) of the scores (80),
and σ is the standard deviation of the scores (6).
Plugging in the values, we have:
z = (75 - 80) / 6
Simplifying the equation:
z = -5 / 6
Therefore, the z-score for a student who earned a 75 on the history test is -5/6.
The z-score represents the number of standard deviations a particular data point is away from the mean.
In this case, since the z-score is negative (-5/6), it indicates that the student's score of 75 is below the mean score of 80. The magnitude of the z-score (5/6) suggests that the student's score is approximately 0.83 standard deviations below the mean.
Z-scores are useful in comparing individual scores to the distribution of scores.
They provide a standardized measure of how a data point relates to the mean and standard deviation of a dataset. In this case, the negative z-score indicates that the student's score is below average, and the magnitude of the z-score gives a sense of the deviation from the mean.
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graph h(x)=(x-1)^2-9
The graph of h(x) = (x-1)^2 - 9 is a U-shaped parabola that opens upwards, with the vertex at (1, -9), and it extends indefinitely in both directions.
The function h(x) = (x-1)^2 - 9 represents a quadratic equation. Let's analyze the different components of the equation to understand the behavior of the graph.
The term (x-1)^2 represents a quadratic term. It indicates that the graph will have a parabolic shape. The coefficient in front of the quadratic term (1) implies that the parabola opens upwards.
The constant term -9 shifts the graph downward by 9 units. This means the vertex of the parabola will be at the point (1, -9).
Based on this information, we can draw the following conclusions:
The graph will be a U-shaped curve with the vertex at (1, -9).
The vertex represents the minimum point of the parabola since it opens upward.
The parabola will be symmetric with respect to the vertical line x = 1 since the coefficient of the quadratic term is positive.
The graph will extend indefinitely in both directions.
To accurately plot the graph, you can choose several x-values, substitute them into the equation to find the corresponding y-values, and then plot the points on the graph. Alternatively, you can use graphing software or calculators that can plot the graph of the equation for you.
Remember to label the axes and indicate the vertex at (1, -9) to provide a complete representation of the graph of h(x) = (x-1)^2 - 9.
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if p(x) = x^2+7x+ 3 is divided by x + 4 the ramainder is
Answer:
Step-by-step explanation:
Use your understanding of angle relationships to set up and solve an equation to
find the missing angle measures.
equation:
94°
117°
to
value of x:
angle measures:
Maneuvering the Middle LLC, 2016, 2022
Answer:
x = 23
Step-by-step explanation:
the angle 117° is the sum of the 2 angles 94 and x , then
x + 94 = 117 ( subtract 94 from both sides )
x = 23
then ∠ x = 23°
ABC Inc. recently issued $1,000 par bonds at a 8.40% coupon rate. If the bonds have 18 years to maturity and current price of $885, what is the yield to maturity? Assume semi-annual compounding.
Note: Convert your answer to percentage and round off to two decimal points. Do not enter % in the answer box.
The yield to maturity for the ABC Inc. bonds is 4.95%.
The yield to maturity (YTM) represents the effective interest rate that an investor would earn if they hold the bond until its maturity date.
To calculate the YTM for the ABC Inc. bonds, we need to find the interest rate that equates the present value of the bond's cash flows (coupon payments and par value) to its current price.
Given that the bond has a $1,000 par value and an 8.40% coupon rate, it pays a coupon of $42 (8.40% × $1,000 / 2) semi-annually for 18 years, totaling 36 coupon payments. At maturity, the bond will also repay the par value of $1,000.
To calculate the YTM, we can use a financial calculator or a spreadsheet software. By inputting the cash flows and solving for the interest rate, we find that the YTM is approximately 4.95% (rounding to two decimal points).
Therefore, the yield to maturity for the ABC Inc. bonds is 4.95%.
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Factor the difference of two squares. 36 to the Power of 2 minus 1
What is equivalent of square root of 200 in simplest form
Answer:
10[tex]\sqrt{2}[/tex]
Step-by-step explanation:
√200 = √(2 × 2 × 2 × 5 × 5)
√200 = (√2)2× (√5)2× √2
√200 = 10√2
Answer:
The square root of 200 in its simplest form is 10√2 is the answer.
This can be done if we know the prime factorization of a number we can right the radical form of the square root of that number.
As a result the prime factorization of 200 is 2×2×2×5×5 so in that way the simplest form of square root of 200 is 10√2.
Step-by-step explanation:
in many cases, property taxes when you own a home are paid every six months, homeowner's insurance is paid once per year, and car insurance is paid every six months. One homeowner pays 1470.00 in property taxes twice a year, 918.00 in homeowner's insurance annually, and makes car insurance payments of 285.78 and 359.79 every six months. If this homeowner wants to spread these expenses out by putting some money each month into a savings account, how much should she put aside monthly? Round your answer to the nearest cent.
The homeowner should put aside $375.30 each month in order to save up for these expenses. Rounded to the nearest cent, this is $375.31.
The question asks us to determine how much a homeowner should put aside each month in order to save up for property taxes, homeowner's insurance, and car insurance expenses that come up every six months and annually.
To solve this problem, we can add up the total cost of all these expenses and divide by the number of months in a year, then round to the nearest cent.
Let's begin by finding the total cost of all these expenses. The homeowner pays property taxes twice a year, so that's a total cost of $1470 x 2 = $2940. The homeowner's insurance is paid once per year, with a cost of $918. The car insurance is paid twice a year, with costs of $285.78 + $359.79 = $645.57.
Adding up all these costs, we get: $2940 + $918 + $645.57 = $4503.57.
To determine how much to put aside each month, we divide this total by 12 (the number of months in a year): $4503.57 ÷ 12 = $375.30.
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Question 2 of 10
How many solutions does the system of equations below have?
y=3x+4
y+6= 3x
OA. Exactly 1 solution
B. No solution
OC. More than 1 solution
OD. At least 1 solution
SUBMIT
Answer:
B, No solution
Step-by-step explanation:
If two lines are graphed, the point they intersect is the solution. However, if the slope is the same, they will never intersect
In the first and second equation, the slopes are both 3 so they will never intersect.
Find the value of x . Please Help Urgent!!
Answer:
x = 13
Step-by-step explanation:
Since [tex]\angle M\cong \angle Y[/tex], then we set the angles equal to each other:
[tex]m\angle M=m\angle Y\\52^\circ=(4x)^\circ\\52=4x\\13=x[/tex]
Therefore, x=13
360-[6*6+4(5*2*2*2)-6*2)]
Answer:
169
Step-by-step explanation:
360-[36+160]-36
360-160-72
169
An economy is based on two sectors, transportation and manufacturing. Production of a dollar's worth of transportation requires an input of $0.20 from transportation and $0.15 from manufacturing. Production of a dollar's worth of manufacturing requires an input of $0.40 from transportation and $0.30 from manufacturing. If a final demand of $60 million for the transportation and $80 million for the manufacturing is to be satisfied, what must be the output for the manufacturing sector?
There is no unique output for the manufacturing sector that can satisfy the given final demand for transportation and manufacturing.
To determine the output for the manufacturing sector, we can set up a system of equations based on the given information. Let's denote the output for the transportation sector as T and the output for the manufacturing sector as M.
From the given information, we know that:
- Production of a dollar's worth of transportation requires an input of $0.20 from transportation and $0.15 from manufacturing.
- Production of a dollar's worth of manufacturing requires an input of $0.40 from transportation and $0.30 from manufacturing.
Using these statements, we can set up the following equations:
0.20T + 0.15M = $60 million (equation 1)
0.40T + 0.30M = $80 million (equation 2)
We can solve this system of equations to find the values of T and M
Multiplying equation 1 by 2, we have:
0.40T + 0.30M = $120 million (equation 3)
Now, subtracting equation 2 from equation 3, we get:
(0.40T + 0.30M) - (0.40T + 0.30M) = $120 million - $80 million
This simplifies to:
0 = $40 million
This means that the left-hand side of the equation is zero, and there is no valid solution that satisfies both equations simultaneously.
Therefore, there is no unique output for the manufacturing sector that can satisfy the given final demand for transportation and manufacturing. The given information seems to be inconsistent or incomplete.
It's important to note that the problem could be resolved by providing additional information or correcting any errors in the given data. Without further clarification, it is not possible to determine the output for the manufacturing sector.
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Use unit multipliers to convert 27 cubic feet per.minutes To liters per hour
Using unit multipliers:
27 cubic feet per minute is equivalent to approximately 57.074 liters per hour.
To convert 27 cubic feet per minute to liters per hour, we can use unit multipliers and conversion factors.
Start with the given value: 27 cubic feet per minute.
Use the conversion factor for volume: 1 cubic foot = 28.3168466 liters. This conversion factor allows us to convert cubic feet to liters.
Set up the first unit multiplier to cancel out the cubic feet:
Multiply by (27 cubic feet / 1) to cancel out the cubic feet unit.
Use the conversion factor for time: 1 minute = 60 minutes. This conversion factor allows us to convert minutes to hours.
Set up the second unit multiplier to convert minutes to hours:
Multiply by (60 minutes / 1 hour) to convert minutes to hours.
Combine the unit multipliers and the conversion factors:
Multiply (27 cubic feet / 1) by (1 cubic foot / 28.3168466 liters) by (60 minutes / 1 hour).
Simplify the expression by canceling out the appropriate units:
The cubic feet units cancel out, and the minutes units cancel out.
Perform the calculation:
(27 / 1) x (1 / 28.3168466) x (60 / 1) = 27 x 60 / 28.3168466 = 57.074 liters per hour.
Therefore, 27 cubic feet per minute is equivalent to approximately 57.074 liters per hour.
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you deposit $500 inna saving account tgat earns 2% intrest componded anually each year. How much money is in your account after 4 years? HINT y=a(l+r) ^t
The amount of money in your account after 4 years would be $541.22.
We might utilize the accompanying recipe to work out how much money will be in your ledger following four years with a 2% yearly funding cost:
A = P(1 + r)ᵗ
Where:
A is the final amount.
P is the principal amount(initial deposit).
r means the interest rate (in decimal structure).
t is the number of years
Given:
P = $500
r = 2% = 0.02 (expressed as a decimal)
t = four years
Associating these qualities to the situation:
A = $500(1 + 0.02)⁴
Making the condition:
A = $500(1.02)⁴
A = $500(1.082432)
A ≈ $541.22
Subsequently, following four years, the cash in your ledger would be around $541.22.
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PLEASE ANSWER AND FILL IN THE BOX if needed
There is no solution in the system
How to determine the solution to the systemFrom the question, we have the following parameters that can be used in our computation:
The augmented matrix
In the augmented matrix, we have
Rows = 2
Columns = 4
This means that
there are 2 equations in the system and there are 3 variables
The general rule is that
The number of variables must be equal to or less than the number of equations
Hence, there is no solution in the system
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LITERALLY ANYONE PLEASEEE HELP
CAN U TELL ME
A, B, C, OR D
The transformation from f(x) to g(x) is (b) a rotation and a translation
How to determine the transformation from f(x) to g(x)From the question, we have the following parameters that can be used in our computation:
f(x) = x
g(x) = 1/9x - 2
First f(x) = x is transformed to f'(x) = 1/9x
This transformation is a rotation
Next, f'(x) = 1/9x is transformed to g(x) = 1/9x - 2
This transformation is a translation
This means that the transformation from f(x) to g(x) is a rotation and a translation
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The volume of the triangular prism below is 120 cubic units. Solve for X and for the surface area.
Answer:
X=20
Step-by-step explanation:
20 On one side and the other side are mirror so
is 40
120-40=80
Both the top and lower triangles are similar which will be half divided
40 each scare now divide again for 2 parts of x
x=20
What type of association does the graph show?
A. positive nonlinear
B. positive linear
C. negative nonlinear
D. negative linear
Answer:
B. Positive linear
Step-by-step explanation:
First, this graph is a linear graph because a linear graph is a straight line. The graph in the diagram is also a straight line, so it is linear.
Also, notice how as x increases, y increases. This means that the graph is positive
here is a number machine
input - x5 - -2 - output
whats the output when the input is 8
The output when the input is 8 in the given number machine is 1.
The given number machine input is - x5 - -2 - output. Now, we have to find the output when the input is 8. Let's understand how we can solve this problem.
What is a number machine? The numbering machine is an imaginary box or machine that takes in a number and does a specific task on it to produce an output.
This concept is usually taught to children in primary grades. It is a fun way to introduce basic mathematical operations such as addition, subtraction, multiplication, and division.
The machine we are dealing with here subtracts the input by 5 and then subtracts 2 from the result to get the output. We can write this as output = (input - 5) - 2 Now we have to find out what the output would be when the input is 8. We can substitute 8 into the formula to get: output = (8 - 5) - 2 Simplifying this, we get: output = 3 - 2output = 1
Therefore, the output when the input is 8 in the given number machine is 1.
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What is a tessellation, how are tessellations used, and what must happen at vertices in order for polygons to tessellate?
A tessellation is a pattern made by repeating geometric shapes without any gaps or overlaps. These shapes, called tiles or polygons, fit together perfectly to cover a plane or a surface. Tessellations can be found in various forms of art, architecture, and design. They are used to create visually appealing patterns and decorations, as well as to explore mathematical concepts.
Tessellations are utilized in various practical applications, such as tiling floors, walls, and pavements, designing mosaics and quilts, and creating computer graphics and textile patterns. They are also studied in mathematics to understand concepts like symmetry, geometry, and transformations.
For polygons to tessellate, certain conditions must be met at their vertices. At each vertex, the angles formed by the polygons must add up to a whole number of degrees, typically 360 degrees. In other words, the sum of the interior angles of each polygon meeting at a vertex must be a multiple of 360 degrees.
This ensures that the polygons can fit together seamlessly without leaving any gaps or overlaps. Examples of polygons that tessellate include equilateral triangles, squares, and hexagons, as their angles add up to 360 degrees at each vertex.
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calculate the side ratio
The side ratio for the triangle is given as follows:
tan(50º) = 1.193.
What are the trigonometric ratios?The three trigonometric ratios are the sine, the cosine and the tangent of an angle, and they are obtained according to the formulas presented as follows:
Sine = length of opposite side to the angle/length of hypotenuse of the triangle.Cosine = length of adjacent side to the angle/length of hypotenuse of the triangle.Tangent = length of opposite side to the angle/length of adjacent side to the angle = sine/cosine.For the angle of 50º, we have that:
The opposite side is of 3.58.The adjacent side is of 3.Hence the side ratio is given as follows:
tan(50º) = 3.58/3 = 1.193.
A similar problem, also about trigonometric ratios, is given at brainly.com/question/24349828
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Find the score (X value) that corresponds to each of the following z-scores.
z = -0.40: X=
z= 0.75:X=
z= -0.50:X=
z= 1.50:X=
z = 1.80: X=
z= -1.25: X=
For each z-score:
z = -0.40: X value corresponds to a score below the mean and within approximately 0.3446 standard deviations.
z = 0.75: X value corresponds to a score above the mean and within approximately 0.7734 standard deviations.
z = -0.50: X value corresponds to a score below the mean and within approximately 0.3085 standard deviations.
z = 1.50: X value corresponds to a score above the mean and within approximately 0.9332 standard deviations.
z = 1.80: X value corresponds to a score above the mean and within approximately 0.9641 standard deviations.
z = -1.25: X value corresponds to a score below the mean and within approximately 0.1056 standard deviations.
To find the corresponding score (X value) for each z-score, we need to use the standard normal distribution table or a calculator.
z = -0.40:
Looking up the z-score of -0.40 in the standard normal distribution table, we find the corresponding area under the curve to be 0.3446. This means that the score (X value) is below the mean but within 0.3446 standard deviations. The specific X value will depend on the mean and standard deviation of the distribution.
z = 0.75:
Looking up the z-score of 0.75 in the standard normal distribution table, we find the corresponding area under the curve to be 0.7734. This means that the score (X value) is above the mean and within 0.7734 standard deviations.
z = -0.50:
Looking up the z-score of -0.50 in the standard normal distribution table, we find the corresponding area under the curve to be 0.3085. This means that the score (X value) is below the mean but within 0.3085 standard deviations.
z = 1.50:
Looking up the z-score of 1.50 in the standard normal distribution table, we find the corresponding area under the curve to be 0.9332. This means that the score (X value) is above the mean and within 0.9332 standard deviations.
z = 1.80:
Looking up the z-score of 1.80 in the standard normal distribution table, we find the corresponding area under the curve to be 0.9641. This means that the score (X value) is above the mean and within 0.9641 standard deviations.
z = -1.25:
Looking up the z-score of -1.25 in the standard normal distribution table, we find the corresponding area under the curve to be 0.1056. This means that the score (X value) is below the mean but within 0.1056 standard deviations.
The specific X values will depend on the mean and standard deviation of the distribution.
for such more question on z-score
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A triangular truss is shown in the figure. Find angle theta
Answer:
40.45°
Step-by-step explanation:
You want the angle opposite the side of length 13 ft in a triangle with the other sides being 16 ft and 20 ft.
Law of cosinesThe law of cosines tells you ...
c² = a² +b² -2ab·cos(C)
Then angle C is ...
C = arccos((a² +b² -c²)/(2ab))
In the given triangle, this is ...
C = arccos((16² +20² -13²)/(2·16·20)) = arccos(487/640) ≈ 40.453°
The measure of angle θ is about 40.45°.
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Answer:
Step-by-step explanation:
NO LINKS!! URGENT HELP PLEASE!!
Please help me with #20
Answer:
[tex]\text{Midpoint of $AC$}=\left(-2,2\right)[/tex]
[tex]\text{Midpoint of $AB$}=\left(\dfrac{5}{2},3\right)[/tex]
[tex]\text{Slope of midsegment}=\dfrac{2}{9}[/tex]
[tex]\text{Slope of $AC$}=3[/tex]
[tex]\text{Slope of $BC$}=\dfrac{2}{9}[/tex]
[tex]\text{Length of midsegment}=\dfrac{\sqrt{85}}2[/tex]
[tex]\text{Length of $BC$}=\sqrt{85}[/tex]
Step-by-step explanation:
Given points:
A = (-1, 5)B = (6, 1)C = (-3, -1)To determine the midpoints of AC and AB, substitute the given points into the midpoint formula.
[tex]\boxed{\begin{minipage}{7.4 cm}\underline{Midpoint between two points}\\\\Midpoint $=\left(\dfrac{x_2+x_1}{2},\dfrac{y_2+y_1}{2}\right)$\\\\\\where $(x_1,y_1)$ and $(x_2,y_2)$ are the endpoints.\\\end{minipage}}[/tex]
[tex]\begin{aligned}\text{Midpoint of $AC$}&=\left(\dfrac{x_C+x_A}{2},\dfrac{y_C+y_A}{2}\right)\\\\&=\left(\dfrac{-3-1}{2},\dfrac{-1+5}{2}\right)\\\\&=\left(\dfrac{-4}{2},\dfrac{4}{2}\right)\\\\&=\left(-2,2\right)\end{aligned}[/tex]
[tex]\begin{aligned}\text{Midpoint of $AB$}&=\left(\dfrac{x_B+x_A}{2},\dfrac{y_B+y_A}{2}\right)\\\\&=\left(\dfrac{6-1}{2},\dfrac{1+5}{2}\right)\\\\&=\left(\dfrac{5}{2},\dfrac{6}{2}\right)\\\\&=\left(\dfrac{5}{2},3\right)\end{aligned}[/tex]
[tex]\hrulefill[/tex]
[tex]\boxed{\begin{minipage}{8cm}\underline{Slope Formula}\\\\Slope $(m)=\dfrac{y_2-y_1}{x_2-x_1}$\\\\where $(x_1,y_1)$ and $(x_2,y_2)$ are two points on the line.\\\end{minipage}}[/tex]
To determine the slope of the midsegment, substitute the midpoints of AC and AB into the slope formula:
[tex]\begin{aligned}\text{Slope of midsegment}&=\dfrac{y_{AB}-y_{AC}}{x_{AB}-x_{AC}}\\\\&=\dfrac{2-3}{-2-\frac{5}{2}}\\\\&=\dfrac{-1}{-\frac{9}{2}}\\\\&=\dfrac{2}{9}\end{aligned}[/tex]
Therefore, the slope of the midsegment is 2/9.
To find the slope of AC, substitute the points A and C into the slope formula:
[tex]\begin{aligned}\text{Slope of $AC$}&=\dfrac{y_{C}-y_{A}}{x_{C}-x_{A}}\\\\&=\dfrac{-1-5}{-3-(-1)}\\\\&=\dfrac{-6}{-2}\\\\&=3\end{aligned}[/tex]
Therefore, the slope of the AC is 3.
**Note** There may be an error in the question. I think you are supposed to find the slope of BC (not AC) since there is no relationship between the slopes of the midsegment and AC, but there is a relationship between the slopes of the midsegment and BC.
[tex]\begin{aligned}\text{Slope of $BC$}&=\dfrac{y_{C}-y_{B}}{x_{C}-x_{B}}\\\\&=\dfrac{-1-1}{-3-6}\\\\&=\dfrac{-2}{-9}\\\\&=\dfrac{2}{9}\end{aligned}[/tex]
The slope of BC is 2/9, so the slopes of the midsegment and BC are the same. This implies that the midsegment and BC are parallel.
[tex]\hrulefill[/tex]
[tex]\boxed{\begin{minipage}{7.4 cm}\underline{Distance Formula}\\\\$d=\sqrt{(x_2-x_1)^2+(y_2-y_1)^2}$\\\\\\where:\\ \phantom{ww}$\bullet$ $d$ is the distance between two points. \\\phantom{ww}$\bullet$ $(x_1,y_1)$ and $(x_2,y_2)$ are the two points.\\\end{minipage}}[/tex]
To find the length of the midsegment, substitute the endpoints (-2, 2) and (5/2, 3) into the distance formula:
[tex]\begin{aligned}\text{Length of midsegment}&=\sqrt{\left(\frac{5}{2}-(-2)\right)^2+(3-2)^2}\\\\&=\sqrt{\left(\frac{9}{2}\right)^2+(1)^2}\\\\&=\sqrt{\frac{81}{4}+1}\\\\&=\sqrt{\frac{85}{4}}\\\\&=\dfrac{\sqrt{85}}2\end{aligned}[/tex]
To find the length of the BC, substitute points B and C into the distance formula:
[tex]\begin{aligned}\text{Length of $BC$}&=\sqrt{(x_C-x_B)^2+(y_C-y_B)^2}\\&=\sqrt{(-3-6)^2+(-1-1)^2}\\&=\sqrt{(-9)^2+(-2)^2}\\&=\sqrt{81+4}\\&=\sqrt{85}\end{aligned}[/tex]
Therefore, the length of BC is twice the length of the midsegment.
help me please. identify the errors in the proposed proofs
The errors in the proposed statement to prove by contradiction that 3·√2 - 7 is an irrational number, is the option;
To apply the definition of rational, a and b must be integersWhat is proving by contradiction?Proving by contradiction is an indirect method of proving a fact or a reductio ad absurdum, which is a method of proving a statement by the assumption that the opposite of the statement is true, then showing that a contradiction is obtained from the assumption.
The definition of rational numbers are numbers that can be expressed in the form a/b, where a and b are integers
The assumption that 3·√2 - 7 is a rational number indicates that we get;
3·√2 - 7 = a/b, where a and b are integers
Therefore, the error in the method used to prove that 3·√2 - 7 is an irrational number is the option; To apply the definition of rational, a and b must be integers. This is so as the value 3·√2 - 7 is a real number, which is also an irrational number, thereby contradicting the supposition.
Learn more on rational numbers here: https://brainly.com/question/31330500
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