Which equation represents a proportional relationship that has a constant of proportionality equal to 0.7?
Answers
Answer:
its a on edge
Step-by-step explanation:
Related Questions
consider the growth of an epitaxial layer of thickness t2 with relaxed (unstrained) lattice constant a2 on a substrate with relaxed lattice constant a1. assume a simple cubic lattice for simplicity,
Answers
Answer: When an epitaxial layer is grown on a substrate, the lattice constant of the epitaxial layer may differ from that of the substrate, leading to strain in the layer. In the case of a simple cubic lattice, the lattice constant can be defined as the distance between two adjacent atoms along any lattice vector.
The lattice mismatch between the substrate and the epitaxial layer can be quantified by the lattice mismatch parameter, δ, which is defined as:
δ = (a2 - a1) / a1
where a1 is the lattice constant of the substrate and a2 is the lattice constant of the epitaxial layer. If δ is positive, the epitaxial layer is under compressive strain, while if δ is negative, the epitaxial layer is under tensile strain.
The strain in the epitaxial layer can also be quantified by the strain parameter, ε, which is defined as:
ε = (a2 - a1) / a2
In the case of a simple cubic lattice, the strain parameter is equal to the lattice mismatch parameter, i.e., ε = δ.
When an epitaxial layer is grown, it may undergo island formation due to the strain induced by the lattice mismatch with the substrate. The thickness of the epitaxial layer at which island formation occurs can be estimated using the critical thickness, t_c, which is given by:
t_c = (h_bar^2 * δ^2) / (2 * E * γ)
where h_bar is the reduced Planck constant, E is the elastic modulus of the epitaxial layer, and γ is the surface energy of the epitaxial layer.
If the thickness of the epitaxial layer is less than the critical thickness, the epitaxial layer remains continuous and undergoes strain relaxation. If the thickness of the epitaxial layer is greater than the critical thickness, the epitaxial layer undergoes island formation.
In summary, the growth of an epitaxial layer on a substrate with a different lattice constant can lead to strain in the layer, which can result in island formation at a critical thickness. The critical thickness can be estimated using the lattice mismatch parameter, elastic modulus, and surface energy of the epitaxial layer.
Epitaxial growth refers to the process of depositing a thin layer of material on a substrate such that the crystal structure of the layer mimics that of the substrate. In this case, we are considering the growth of an epitaxial layer of thickness t2 with a relaxed (unstrained) lattice constant a2 on a substrate with a relaxed lattice constant a1.
Assuming a simple cubic lattice for simplicity, we can use the equation for lattice mismatch to calculate the strain between the layer and substrate:
ε = (a2 - a1) / a1
If the lattice constants are matched, ε = 0 and there is no strain. However, if there is a mismatch, there will be strain in the layer. In the case of a relaxed layer, we assume that the strain has been relieved and the layer has reached equilibrium with the substrate.
The thickness of the layer, t2, can affect the strain in the layer. Generally, thinner layers will have less strain because they are more able to conform to the lattice of the substrate. Thicker layers may have more strain, which can lead to defects in the layer.
Overall, the thickness of the epitaxial layer can affect the strain in the layer and should be carefully controlled to minimize defects.
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Can you pls help i need to submit it soon ..i'll mark you brainlist
Answers
Here is the answer with explanation
Answer:
9x² + 72x + 144 OR x² + 8x + 16
Step-by-step explanation:
Data :
Sqaure has a side let say p = 3x + 12
As the formula for square area is
Area = A = p² or length × width
As square has all equal side
So ( 3x + 12 ) ( 3x + 12 )
⇒ 9x² + 36x +36x + 144
9x² + 72x + 144
OR take 9 common
x² + 8x + 16
What does the discriminant tell you?
Select the correct response:
Whether the parabola opens up or down. How many y-intercepts the parabola has.
How many and what kind of solutions are possible.
O How many x-intercepts a parabola has.
How many and what kind of solutions are possible.
How many y-intercepts a parabola has.
Whether the parabola opens up or down.
Answers
Answer:
Step-by-step explanation:
The discriminant is a part of the quadratic formula that tells us how many and what kind of solutions are possible for a quadratic equation . It is the expression b^2 - 4ac found under the square root symbol in the quadratic formula .
A positive discriminant indicates that the quadratic equation has two distinct real number solutions . A discriminant of zero indicates that the quadratic equation has a repeated real number solution . A negative discriminant indicates that neither of the solutions are real numbers.
Therefore, the correct response to your question is “How many and what kind of solutions are possible.” The discriminant does not tell you how many x-intercepts or y-intercepts a parabola has or whether the parabola opens up or down.
I hope this helps! Let me know if you have any other questions or if there is anything else I can help you with.
Which shapes from the Clade Race would be considered autoapomorphic?a. Arrow b. Circle c. Moon d. Triangle e. Square f. Crossg. Star h. Heati. Hexagon
Answers
Answer:
Step-by-step explanation:
f
is -3.625 a irrational number
Answers
wuwhbsbsbsbshshhshshs
Answers
answer: x = - 1
x = 11
true or false: every set of 15 socks chosen among 14 pairs of socks contains at least one matched pair. explain why.
Answers
The statement of the given question is True.
True. This is because there are only 14 different types of socks to choose from, so if you choose 15 socks, there must be at least one pair of socks that match. This is known as the Pigeonhole Principle, which states that if there are more pigeons than pigeonholes, at least one pigeonhole must contain more than one pigeon. In this case, the socks are the pigeons and the different types of socks are the pigeonholes.
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For The Following Frequency Distribution, How Many Individuals Had A Score Of X = 5? Х F 2 5 4 4 3 2 3 A)1 B)2 C)3D)4
Answers
By looking at the frequency of each value, we can see how many individuals had a score of X = 5, which is 4 individuals.
Frequency distribution is a way of organizing data by counting how many times each value appears in a set of data.
In this specific frequency distribution, the value of X = 5 appears once. The frequency, F, for X = 5 is 4, which means that 4 individuals had a score of 5.
This information can be found by looking at the row where X = 5. The frequency distribution allows us to see a pattern in the data, in this case, the frequency of scores.
By analyzing the frequency distribution, we can see that there are more individuals with scores of 2 and 4 compared to those with scores of 3 and 5.
Therefore option (d) is correct.
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I need help one last time.
Here are the answer choices.
Y = 72
Y = 16
Y = 32
Y = 1
Answers
Answer:
y = 32
Solving Way #1:
This way uses the "tip" they give us of finding the relation between the first two values and then applying it to the second x.
k = \(\frac{y}{x}\)
2 = \(\frac{16}{8}\)
-
y = kx
y = (2)(16)
y = 32
Solving Way #2:
Since they vary directly which each other, we can set up a proportion to solve. I have y values on the top and x values on the bottom.
\(\frac{16}{8} =\frac{y}{16}\)
256 = 8y
32 = y
y = 32
Either way, when x is 16 y is 32.
Which answer is correct?
Answers
Answer:
B
Step-by-step explanation:
Philip rode less than her so immediately you subtract which cancels answers a and d.
we aren't dividing the answers, he rode 3 TIMES faster, meaning multiply. which is why it's 5
Two forces, of magnitudes F1
= 95.0 N
and F2
= 50.0 N
, act in opposite directions on a block, which sits atop a frictionless surface, as shown in the figure. (Figure 1)Initially, the center of the block is at position xi
= -3.00 cm
. At some later time, the block has moved to the right, and its center is at a new position, xf
= 6.00 cm
Determine the change Kf−Ki
in the kinetic energy of the block as it moves from xi
= -3.00 cm
to xf
= 6.00 cm
.
Answers
The kinetic energy change of the block is 4.05 J
What is kinetic energy?Kinetic energy is energy due to motion of an object
Since two forces, of magnitudes F1 = 95.0 N and F2 = 50.0 N, act in opposite directions on a block, which sits atop a frictionless surface, as shown in the figure.
If Initially, the center of the block is at position xi = -3.00 cm. At some later time, the block has moved to the right, and its center is at a new position, xf = 6.00 cm.
To determine the change Kf−Ki in the kinetic energy of the block as it moves from xi = -3.00 cm to xf = 6.00 cm, we use the work-kinetic energy principle.
So, Fd = ΔK where
F = net force = F₂ + F₁, where d = distance = x₂ - x₁ and ΔK = change in kinetic enrgyGiven that
F₁ = 95.0 N, F₂ = -50.0 N (negative since it is in the opposite direction), x₁ = -3.00 cm = -0.03 m and x₂ = 6.00 cm = 0.06 mSo, substituting the values of the variables into the equation, we have that
ΔK = Fd
= ( F₂ + F₁)(x₂ - x₁)
.= [95.0 N + (-50.0 N)](0.06 m - (-0.03 m)
= [95.0 N - 50.0 N)](0.06 m + 0.03 m)
= 45.0 N × 0.09 m
= 4.05 Nm
= 4.05 J
So, the kinetic energy change is 4.05 J
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1- 5xy^-1 z^8 * 4y^3 z^-1
2- (12x^2 y^8)/ 3xy^7
3- 2y^-4 z^-2 * 3xy^6 z^4
4- (5x^4 y^3)/xy
Answers
Answer:
To simplify the expression 5xy^-1 z^8 * 4y^3 z^-1, we can combine the coefficients and the variables with the same base:
5 * 4 = 20
x^1 * x^0 = x^1
y^-1 * y^3 = y^2 (when dividing with the same base, we subtract the exponents)
z^8 * z^-1 = z^7
Therefore, the simplified expression is:
20x y^2 z^7
To simplify the expression (12x^2 y^8)/ 3xy^7, we can simplify the fraction first by canceling out the common factors in the numerator and denominator:
12x^2 y^8 = (4 * 3) * (x * x) * (y * y * y * y * y * y * y * y)
3xy^7 = (3 * x) * (y * y * y * y * y * y * y)
We can cancel out the common factors of 3, x, and y^7, which gives us:
(4x y)/1 or simply 4xy
Therefore, the simplified expression is:
4xy
To simplify the expression 2y^-4 z^-2 * 3xy^6 z^4, we can combine the coefficients and the variables with the same base:
2 * 3 = 6
y^-4 * y^6 = y^2 (when multiplying with the same base, we add the exponents)
z^-2 * z^4 = z^2 (when multiplying with the same base, we add the exponents)
x^1 * x^0 = x^1
Therefore, the simplified expression is:
6x y^2 z^2
To simplify the expression (5x^4 y^3)/xy, we can simplify the fraction first by canceling out the common factors in the numerator and denominator:
5x^4 y^3 = (5 * x * x * x * x) * (y * y * y)
xy = (x * y)
We can cancel out the common factor of xy, which gives us:
5x^3 y^2
Therefore, the simplified expression is:
5x^3 y^2
Suppose elementary students are asked their favorite color, and these are the results: - 24 % chose blue - 17 % chose red - 16 % chose yellow What percentage chose something other
Answers
43% of elementary students chose something other than blue, red, or yellow as their favorite color.
The percentage of elementary students who chose something other than blue, red, or yellow as their favorite color can be found by subtracting the sum of the percentages of those three colors from 100%.Blue: 24%
Red: 17%
Yellow: 16%
Total: 24% + 17% + 16% = 57%
Percentage chose something other:
100% - 57% = 43%.
Therefore, 43% of elementary students chose something other than blue, red, or yellow as their favorite color.
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When working modulo m, the notation a^-1 is used to denote the residue b for whichab = 1 (mod m), if any exists. For how many integers a satisfying 0 < a < 100 is it true thata(a − 1)−¹ = 4a-¹ (mod 20)?Please hurry up guys!!
Answers
There are 10 integers that satisfy 0 < a < 100.
What are integers?
Zero, a positive natural number, or a negative integer denoted by a minus sign are all examples of integers. The inverse additives of the equivalent positive numbers are the negative numbers.
Here, we have
Given: When working modulo m, the notation a⁻¹ is used to denote the residue b for which ab = 1 (mod m), if any exists.
We have to find integers that satisfy 0 < a < 100.
a(a − 1)⁻¹ ≡ 4a⁻¹ (mod 20)
a ≡ 4a⁻¹(a − 1)(mod 20)
a² ≡ 4(a-1)(mod 20)
a² - 4a + 4 ≡ 0(mod 20)
(a - 2)² ≡ 0(mod 20)
a = 2 + 10n | for n = (0, 1, 2, 3.....9)
Hence, there are 10 integers that satisfy 0 < a < 100.
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determine the domain and the range of the function .f = {(10,1 ),(17,-6),(45,1 ),(51,5 )}
Answers
The given function f, with the provided set of ordered pairs, has a domain of {10, 17, 45, 51} and a range of {-6, 1, 5}.
The domain of a function refers to the set of all possible input values or x-values for which the function is defined. In this case, the given set of ordered pairs determines the domain. Looking at the x-values in the set {10, 17, 45, 51}, these are the unique inputs for which the function f is defined. Hence, the domain of f is {10, 17, 45, 51}.
On the other hand, the range of a function refers to the set of all possible output values or y-values that the function can take. By examining the y-values in the set {-6, 1, 5}, we can observe the distinct outputs generated by the function f. Thus, the range of f is {-6, 1, 5}.
In summary, the domain of the function f is {10, 17, 45, 51}, and the range of f is {-6, 1, 5}.
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Barbara, Mark and Carlos are participating in a race. Barbara thought she could win with a 3 meter head start even though she only pedaled 3 meters every 2 seconds. Mark began at the starting line and finished the 20 meter race in 5 seconds. Meanwhile, Carlos rode his tricycle so that his distance (y)
from the starting line in meters could be represented by the equation y = 5/2x+1. where x represents time in
seconds.
What is the dependent variable? What is the independent variable?
Pls help!
Answers
a tank, containing 880 liters of liquid, has a brine solution entering at a constant rate of 4 liters per minute. the well-stirred solution leaves the tank at the same rate. the concentration within the tank is monitored and found to be
Answers
In a tank with an initial volume of 880 liters and a constant inflow and outflow rate of 4 liters per minute, the concentration of the brine solution inside the tank remains constant over time.
Initially, the tank contains 880 liters of liquid. With an inflow rate of 4 liters per minute, the same amount of brine solution enters the tank. Simultaneously, the well-stirred solution leaves the tank at the same rate of 4 liters per minute. This creates a balance between the inflow and outflow, resulting in a constant volume of liquid inside the tank.
Since the concentration is not mentioned explicitly, we can infer that the concentration of the brine solution inside the tank remains constant. The inflow and outflow rates are equal, ensuring that the concentration does not change over time. Therefore, the concentration of the brine solution inside the tank remains the same as the initial concentration throughout the process.
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A pool in the shape of a rectangular prism is being filled with water. The length and width of the pool is 24 feet and 15 feet. If the height of the water in the pool is 113 feet, what is the volume of the water in cubic feet?
Answers
360*113=40680feet^3
Hey there!
The answer to your question is 40,680 cubic feet.
The formula for volume is length x width x height = volume.
24 x 15 x 113 is 40,680. Therefore, the volume of the pool is 40,680 cubic feet.
Hope this helps! Good luck! Have a great day!
(Also, that is one deep pool; 113 feet! Wow!)
Autumn is a teacher and takes home 83 papers to grade over the weekend. She can grade at a rate of 9 papers per hour. How many papers would Autumn have remaining to grade after working for 8 hours?
Answers
After working 8 hours and grading 9 papers per hour, it is expected Autumn has 11 papers left.
How many paper will Autumn be able to grade in 9 hours?To calculate the number of papers she can grade during this time, let's use the rate provided:
9 papers per hour x 8 = 72 papersThis means in 9 hours she can grade 72 papers.
How many papers will she have left?Now, let's calculate the number of papers left:
83-72 = 11Based on this, the total of papers left after working for 8 hours is 11 papers.
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Do you always need three congruent corresponding parts to prove triangles congruent?
Answers
Yes, to prove triangles to be congruent it is compulsory to have at least three congruent corresponding parts.
Explanation:
Minimum congruent corresponding parts required to prove triangles to be congruent are as follow:
Triangle have three angles and three sides to be used for congruency.Types of congruency used to prove any two triangles to be congruent are SSS ( Side-Side- Side) , SAS( Side angel side) , ASA( Angle-side angle), AAS( angle angle side) and RHS( right angle- hypotenuse- side).Minimum three congruent corresponding parts are required to prove any triangles are congruent.Either all three sides, two angles and one side, two side one angle, or Right angle hypotenuse and one of the corresponding side.Therefore, minimum three congruent corresponding parts are required to prove any two triangles to be congruent.
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15 – 35 / 7 × 2 + 3 × 4 =
Answers
Question 4
Which of the following graphs shows the solution to the system of equations?
Answers
Answer: Letter (D)
Step-by-step explanation:
It's (D) Because The Cordinates intersect with one another to End up with the result of -3, and 3
2y = -1x -8
rewrite each of the following equations in y= mc + b form
Answers
Answer: y=-1x-8
Step-by-step explanation:
The first step is to: Move the 'X' to the right side of the equation.
The second step is to: Divide the 'Y'
But since the 'X' is already on the right side you will just divide the 'Y'. If the 'X' was on the left then you will follow those steps that I gave you at the beginning in order to get it in the y=mx+b.
So it will look like this:
2y=-1x-8
y=-1x-8
y= -1(is the slope)x-8(is the Y-intercept)
So, if you have to graph this you will graph it starting with negative 8 as the y-intercept. Then you will go down one and over 1.
Which of the following is a correct interpretation of the expression -3 - 5
Answers
Answer:
c
Step-by-step explanation:
Answer:
c.
Step-by-step explanation:Find the median and mean of the following data set: 35, 9, 17, 7, 45, 3, 24
Answers
The median of the data set is equal to 17.
The mean of the data set is equal to 20.
How to calculate the mean for the set of data?Mathematically, the mean for this set of data can be calculated by using the following formula:
Mean = [F(x)]/n
For the total number of data, we have;
Total, F(x) = 35 + 9 + 17 + 7 + 45 + 3 + 24
Total, F(x) = 140
Mean = 140/7
Mean = 20.
How to calculate the median?First of all, we would sort the observations (data set) from the least to greatest as follows:
Data set = 3,7,9,17,24,35,45
Median = 17.
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In sampling____involves assessing the value of an unknown population parameter– such as a population mean, population proportion, or population variance–using sample data.a. none b. distribution c. Systematic sampling d. estimation e. substitution
Answers
I am stuck on how to do this problem. Could someone help me start this?
Answers
Answer:
wait I'm gonna ask my sister to help you answer wait a minute
 Shauna solve the polynomial equations given in the table determine whether each polynomial is correct select correct or incorrect for each equation
Answers
Answer:
correct / incorrect / incorrect
Step-by-step explanation:
5a - 8 + 2a² + 2a - 1 ← collect like terms
= 2a² + 7a - 9 ← correct
-------------------------------------
b² + 6b - 4 - (3b + b²) ← distribute parenthesis by - 1
= b² + 6b - 4 - 3b - b² ← collect like terms
= 3b - 4 ≠ 2b² + 3b - 4
---------------------------------------
9c - 4c² - (2c² + c) ← distribute parenthesis by - 1
= 9c - 4c² - 2c² - c ← collect like terms
= - 6c² + 8c ≠ - 6c² + 10c
Answer:
correct
incorrect
incorrect
Step-by-step explanation:
\(\begin{aligned}(5a-8)+(2a^2+2a-1)&=5a-8+2a^2+2a-1\\& = 2a^2+5a+2a-8-1\\ & = 2a^2+7a-9\end{aligned}\)
\(\implies (5a-8)+(2a^2+2a-1)=2a^2+7a-9\quad\textsf{is correct}\)
---------------------------------------------------------------------------------------
\(\begin{aligned}(b^2+6b-4)-(3b+b^2) &=b^2+6b-4-3b-b^2\\ & = b^2-b^2+6b-3b-4\\& = 3b-4\end{aligned}\)
\(\implies (b^2+6b-4)-(3b+b^2)=2b^2+3b-4\quad\textsf{is incorrect}\)
---------------------------------------------------------------------------------------
\(\begin{aligned}(9c-4c^2)-(2c^2+c) &=9c-4c^2-2c^2-c\\ & = -4c^2-2c^2+9c-c\\& = -6c^2+8c\end{aligned}\)
\(\implies (9c-4c^2)-(2c^2+c)=-6c^2+10c\quad\textsf{is incorrect}\)
Using the graph posted, find the distance of the line while showing all work. And if you’re using the Pythagorean theorem, please show all steps.
Answers
The length of the line segment with is 9.9 units
How to find length of line ABThe length of line in an ordered pair is calculated using the formula
d = √{(x₂ - x₁)² + (y₂ - y₁)²}
where
d = distance between the points
x₂ and x₁ = points in x coordinates
y₂ and y₁ = points in y coordinates
distance between points B = (3, 5) and A (-4, -2) is calculated as follows
d = √{(x₂ - x₁)² + (y₂ - y₁)²}
where
x₂ = -4
x₁ = 3
y₂ = -2
y₁ = 5
substituting the values to formula
d =√{(-4 - 3)² + (-2 -5)²}
d =√{(-7)² + (-7)²}
d =√{49 + 49}
d = √98
d = 7√2
d = 9.9 units
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what feature of a quadratic function is revealed when it is in its factored form?
Answers
Answer:
Step-by-step explanation:
