a) i. Since n1 and n2 are equal, we can conclude that g is one-to-one.
ii. There are certain integers in the codomain (Z) that are not mapped to by any integer in the domain (Z). Hence, g is not onto.
b) Every real number in the codomain (R) is mapped to by at least one real number in the domain (R), indicating that G is onto.
How is real numbers mapped?Every real number in the codomain (R) is mapped to by at least one real number in the domain (R), indicating that G is onto.
(i) To determine if g is one-to-one, we need to check if different inputs map to different outputs. In other words, for any two integers n1 and n2, if g(n1) = g(n2), then n1 must be equal to n2.
Let's assume n1 and n2 are integers such that g(n1) = g(n2). Then we have:
g(n1) = g(n2)
4n1 - 5 = 4n2 - 5
By simplifying the equation, we get:
4n1 = 4n2
Dividing both sides by 4, we have:
n1 = n2
Since n1 and n2 are equal, we can conclude that g is one-to-one.
(ii) To determine if g is onto, we need to check if every integer in the codomain (Z) is mapped to by at least one integer in the domain (Z).
For g to be onto, we need to find an integer n such that g(n) = k, where k is any integer in Z.
Let's consider an arbitrary integer k. We need to find an integer n such that g(n) = k.
g(n) = 4n - 5 = k
Adding 5 to both sides and dividing by 4, we have:
4n = k + 5
n = (k + 5)/4
Since n is an integer, (k + 5)/4 must be an integer as well. However, this is not always the case. For example, if k = 1, then (k + 5)/4 = 6/4 = 3/2, which is not an integer.
Therefore, there are certain integers in the codomain (Z) that are not mapped to by any integer in the domain (Z). Hence, g is not onto.
(b) Now let's consider the function G: R → R defined by G(x) = 4x - 5 for all real numbers x.
To determine if G is onto, we need to check if every real number in the codomain (R) is mapped to by at least one real number in the domain (R).
For G to be onto, we need to find a real number x such that G(x) = y, where y is any real number.
Let's consider an arbitrary real number y. We need to find a real number x such that G(x) = y.
G(x) = 4x - 5 = y
Adding 5 to both sides and dividing by 4, we have:
4x = y + 5
x = (y + 5)/4
Since x is a real number, (y + 5)/4 can take any real value. Therefore, for any real number y, we can find a real number x that satisfies G(x) = y.
Therefore, every real number in the codomain (R) is mapped to by at least one real number in the domain (R), indicating that G is onto.
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The math club is selling T-shirts to raise money. Each T-shirt sold represents a profit of $2. The club has a total of 500 T-
shirts
If P() is the profit that the math club makes for selling T-shirts, a reasonable domain of this function is
<
Answer:
2 < or equal to (t) < or equal to 1000
Step-by-step explanation:
2 is the profit of the (t) amount of t shirts so the amount should be greater than or equal too 1000 because if they have 500 shirts 500 x 2 is 1000
The domain of this function will be given by the set A[1, 500].
What is the end behaviour of a function? What do you mean by domain and range of a function?The end behavior of a function describes the trend of the graph if we look to the right end of the x-axis (as x approaches +∞ ) and to the left end of the x-axis (as x approaches −∞ ).
For any function y = f(x), Domain is the set of all possible values of [x] for which [y] exists. Range is the set of all values of [y] that exists for the given domain.
Given is the math club which is selling T-shirts to raise money. Each T-shirt sold represents a profit of $2. The club has a total of 500 T- shirts.
The function representing the profit by selling [x] T - shirts can be written as -
P(x) = 2x
or
y = 2x
Maximum value of y = 2x 500 = $1000
The domain of this function will be given by the set A[1, 500].
Hence, the domain of this function will be given by the set A[1, 500].
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Mohammed is x years old.
Holly is 3 years older than Mohamed.
Karen is twice as old as Mohamed.
The total of their ages is 51.
How old is Mohamed?
Step-by-step explanation:
Mohammed age = x
Holly age = x + 3
Karen age = 2x
given,
[tex]x + (x + 3) + 2x = 51 \\ x + x + 3 + 2x = 51 \\ 4x + 3 = 51 \\ 4x = 51 - 3 \\ 4x = 48 \\ x = 48 \div 4 \\ = 12[/tex]
PLSS HELP IMMEDIATELY!!! i’ll give brainiest if u don’t leave a link!
Answer:
They have air-filled pockets in their leaves
Step-by-step explanation:
For every six dollars that Jamal saves in his account, his brother saves eight dollars in his account.
If Jamal has $24.00 dollars in his account, how much money does his brother have in his account?
Answer:
jamel brother has 48.00 dollors
Step-by-step explanation:
Answer: He has 32$ 24 divided by 6 is 4 multiply 4 by 8 and you get 32
6=2(y+2) i need help
Answer:
y=1
Step-by-step explanation:
6=2(y+2)
6=2y+4
2=2y
y=1
Answer:
y=1
Step-by-step explanation:
6th grade math plz help
a is (4,15) and b is (8,1) what is the midpoint of AB?
Answer:
(6,8)
Step-by-step explanation:
midpoint=(x1+x2)÷2,(y1+y2)÷2
a(4,15) b(8,1)
x=4+8=12÷2=6
y=15+1=16÷2=8
Answer=(6,8)
Show that the following are equivalent, for Snopea filter Fonot todological Space X 9 f is if G is G an open set in C and CnH+ 0 s G for each Hef, then CEF c) iz G is G ° open and C & F, then X-cef ?
The given statement is true (i) implies (ii) and (ii) implies (i).
The statement in the question that needs to be proven is :C & F, then X-cef = G is G an open set in C and CnH+ 0 s G for each Hef
We will prove that (i) implies (ii) and (ii) implies (i).
Proof: (i) C & F, then X-cef = G is G an open set in C and CnH+ 0 s G for each Hef
Let X \ {C & F} = U, then U is open, since C & F is closed.
Let H be any point of U.
By hypothesis, there exists an open set G such that CnH+ 0 s G.
Let x in G. If x ∈ C & F, then x ∉ H, so x ∉ U.
Thus, G ⊆ C, and so G ∩ U = ∅.
Hence, U is open(ii) G is G an open set in C and CnH+ 0 s G for each Hef
Let x ∈ X-C & F.
Then x ∉ C & F, so x ∉ C.
Since C is closed, there exists a neighborhood G of x that is disjoint from C.
Let H be any point of X-C & F.
Then H ∈ G and so CnH+ 0 s G.
Thus, C & F is closed.
Therefore, X-C & F is open, since C & F is closed.
Thus, X-C & F = G.
Hence, (ii) implies (i).
Therefore, the statement in the question is proven.
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Circle | was dilated with the orgin as the center of dilation to create Circle ||.
Which rule best represents the dilation applied to Circle | to create Circle ||?
Step-by-step explanation:
The rule that best represents the dilation applied to Circle | to create Circle || is the scale factor. The scale factor determines the ratio of corresponding lengths between the original figure (Circle |) and the dilated figure (Circle ||).
In a dilation, all lengths in the original figure are multiplied by the scale factor to obtain the corresponding lengths in the dilated figure. This includes the radii of the circles.
For example, if the scale factor is 2, it means that every length in the original figure is doubled in the dilated figure. If the scale factor is 1/2, it means that every length is halved. The scale factor can be greater than 1, less than 1 (but greater than 0), or even negative, indicating a reflection.
In the context of the given scenario, since the origin is the center of dilation, the scale factor determines how the distances from the origin to any point on Circle | are scaled to obtain the corresponding distances on Circle ||.
Arrange the following fraction from least to greatest 2/3, 5/6, 3/5
What did you do to arrange the fraction from least to greatest?
Answer:
2/3 and 3/5 is same, then 5/6
Step-by-step explanation:
you can convert the fractions to decimals to find their value and then arrange them from least to the greatest.
Answer:
3/5, 2/3, 5/6 [From Least to Greatest]
Step-by-step explanation:
First you're going to want to know which one is "the bigger piece of pie".
I made a few drawing and look at the pictures (Just in case you have a different opinion from my answer)
cos80°.cos10°-sin80°.sin10°
Step-by-step explanation:
The answer will be zero
here are the steps:
cos(90-10)xcos(90-80)-sin(90-10)xsin(90-10)=
(cos10xcos10)-(sin80xsin80)=
0.965111-0.965111=0
have a good day :)
I hope it will benefit you.
Can anyone help find x?
Answer:
119
Step-by-step explanation:
Answer:
x= 61
Step-by-step explanation:
i think
sketch the strophoid shown below. r = sec() − 2 cos(), − 2 < < 2
The strophoid is a curve represented by the polar equation r = sec(θ) − 2cos(θ), where -2 < θ < 2. In Cartesian coordinates, the strophoid equation can be written as (x^2 + y^2)^2 = 4y^2(x + 2).
The strophoid has a unique shape characterized by its looped structure.
The strophoid is symmetric with respect to the y-axis, as changing θ to -θ gives the same value of r. It has two branches that intersect at the origin (0, 0). As θ increases from -2 to 2, the curve starts from the rightmost point of the loop, extends to the left, and then returns back to the rightmost point.
The loop of the strophoid is created by the interplay of the secant function, which stretches the curve away from the origin, and the cosine function, which pulls it towards the origin. The strophoid exhibits interesting geometric properties and is often used in mathematical modeling and visualization.
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Plz help ASAP !!!!! Plzzz
Answer:
The second one
Step-by-step explanation:
She started with x dollars and then used 8 dollars to buy a football game ticket, so x-8. Then, she is left with 56 dollars, so x-8=56. Therefore, the second story represents the equation.
A faraway planet is populated by creatures called Jolos. All Jolos are either
green or purple and either one-headed or two-headed.
Balan, who lives on this planet, does a survey and finds that her colony of 500
contains 100 green, one-headed Jolos: 125 purple, two-headed Jolos; and
270 one headed Jolos.
Answer:
Option B
Step-by-step explanation:
We have to complete the table given in the question,
One headed Two headed Total
Green 100 230 - 125 = 105 105 + 100 = 205
Purple 270 - 100 = 170 125 170 + 125 = 295
Total 270 500 - 270 = 230 500
By analyzing the given table,
Number of green Jolos in Balan's colony = Total of one headed green Jolos and Two headed green Jolos
= 205
Therefore, number of green Jolos in Balan's colony are 205.
Option B will be answer.
Answer:
When you put together the whole chart you will see the total is 205.
I need the length of DB and Measure of angle C in degrees!!!!!
Answer:
DB = 10
m∡C = 106°
Step-by-step explanation:
DE = EB
20x - 8 = 16x + 12
4x = 20
x = 5
DB = 5 doubled, or 10
m∡A + m∡D = 180
3y + 7 + 2y + 8 = 180
5y + 15 = 180
5y = 165
y = 33
m∡A = m∡C
m∡A = 3(33)+7 = 106°
m∡C = 106° also
6th grade math help me pleaseeee
Answer:
3 CDs
Step-by-step explanation:
If we have $65 and buy a $23 DVD, we will have $42 left.
So how many $14 CDs can we buy with $42?
All we have to do is divide 42 into 14, so we know how many groups of $14 we can make with $42.
42 ÷ 14 = 3
Therefore, Michella can purchase 3 CDs.
If AABC = ADEC,
ZB = 44º and ZE = 4x
A
B
С
E
x = [?]
Answer:
The angle at B is the same as the angle at E so equate them to each other to find x
2x+4=40°
2x=40-4
2x=36
x=36/2=18
Step-by-step explanation:
Hope this is helpful! stay safe and God Bless:)))
Evaluate x-2 for x=-3
Answer:
-5
Step-by-step explanation:
Rewrite x - 2 as -3 - 2, which comes out to -5.
The graph shown is a scatter plot:
A scatter plot is shown with the values on the x-axis in increasing units of 1 and the y-axis in increasing units of 10. The data moves in an upward cluster. Point A has coordinates 8 and 70. Point B has coordinates 1 and 20, point C has coordinates 3 and 40, point D has coordinates 7 and 30. Additional points are located at 2 and 10, 2 and 20, 3 and 30, 5 and 50, 5 and 40, 7 and 70, 7 and 60.
Which point on the scatter plot is an outlier? (4 points)
Group of answer choices
Point D
Point B
Point C
Point A
Answer:
D
Step-by-step explanation:
if we see on the graph, the point which is scattered is point D !
also took the FLVS test!!
A sequence , satisfies the recurrence relation with
initial
conditions and . Find an explicit formula for the sequence.
+ k2 3) A sequence a,,a,,a z ..., satisfies the recurrence relation ax = 2x-1 + 2ax-2 with initial conditions a, = 2 and a = 7. Find an explicit formula for the sequence.
The explicit formula for the sequence [tex]\(a_n\)[/tex] is:
[tex]\(a_n = \begin{cases} 4n + 3 & \text{if } n \text{ is even} \\ 4n - 2 & \text{if } n \text{ is odd} \end{cases}\)[/tex]
To find an explicit formula for the sequence [tex]\(a_n\)[/tex] that satisfies the recurrence relation [tex]\(a_n = 2n-1 + 2a_{n-2}\)[/tex] with initial conditions [tex]\(a_1 = 2\)[/tex] and [tex]\(a_2 = 7\)[/tex], we can proceed as follows:
First, let's examine the first few terms of the sequence:
[tex]\(a_1 = 2\)\\\(a_2 = 7\)\\\(a_3 = 2(3) - 1 + 2a_1 = 5 + 2(2) = 9\)\\\(a_4 = 2(4) - 1 + 2a_2 = 8 + 2(7) = 22\)\\\(a_5 = 2(5) - 1 + 2a_3 = 9 + 2(9) = 27\)\\[/tex]
We can observe that the even-indexed terms [tex]\(a_2, a_4, a_6, \ldots\)[/tex] are increasing by a factor of 2, while the odd-indexed terms [tex]\(a_1, a_3, a_5, \ldots\)[/tex] are increasing by a factor of 3. This pattern suggests that we can split the sequence into two separate sequences:
For even-indexed terms:
[tex]\(b_n = a_{2n}\)[/tex]
For odd-indexed terms:
[tex]\(c_n = a_{2n-1}\)[/tex]
Let's find explicit formulas for both [tex](\(b_n\))[/tex] and [tex](\(c_n\))[/tex]:
1. Even-indexed terms [tex](\(b_n\))[/tex]:
The recurrence relation becomes:
[tex]\(b_n = 2(2n) - 1 + 2b_{n-1}\)[/tex]
To simplify the formula, let's rewrite [tex]\(b_n\)[/tex] as [tex]\(b_{n+1}\)[/tex] (i.e., shifting the index by 1):
[tex]\(b_{n+1} = 2(2n + 2) - 1 + 2b_{n}\)[/tex]
Subtracting the two equations, we get:
[tex]\(b_{n+1} - b_n = 4\)[/tex]
This is a simple arithmetic progression with a common difference of 4. To find an explicit formula for [tex]\(b_n\)[/tex], we can use the formula for the nth term of an arithmetic progression:
[tex]\(b_n = b_1 + (n - 1) \cdot \text{{common difference}}\)[/tex]
Substituting [tex]\(b_1 = a_2 = 7\)[/tex] and the common difference of 4, we have:
[tex]\(b_n = 7 + (n - 1) \cdot 4 = 4n + 3\)[/tex]
2. Odd-indexed terms [tex](\(c_n\))[/tex]:
The recurrence relation becomes:
[tex]\(c_n = 2(2n-1) - 1 + 2c_{n-1}\)[/tex]
Similar to before, let's rewrite [tex]\(c_n\)[/tex] as [tex]\(c_{n+1}\)[/tex]:
[tex]\(c_{n+1} = 2(2n + 1) - 1 + 2c_{n}\)[/tex]
Subtracting the two equations, we get:
[tex]\(c_{n+1} - c_n = 4\)[/tex]
Again, this is an arithmetic progression with a common difference of 4. Applying the formula for the nth term of an arithmetic progression:
[tex]\(c_n = c_1 + (n - 1) \cdot \text{{common difference}}\)[/tex]
Substituting [tex]\(c_1 = a_1 = 2\)[/tex] and the common difference of 4, we have:
[tex]\(c_n = 2 + (n - 1) \cdot 4 = 4n-2[/tex]
1) [tex]\cdot 4 = 4n - 2\)[/tex]
Now that we have explicit formulas for both [tex]\(b_n\)[/tex] and [tex]\(c_n\)[/tex], we can combine them to obtain the explicit formula for the original sequence [tex]\(a_n\)[/tex]:
For even-indexed terms, [tex]\(a_{2n} = b_n = 4n + 3\)[/tex]
For odd-indexed terms, [tex]\(a_{2n-1} = c_n = 4n - 2\)[/tex]
Therefore, the explicit formula for the sequence [tex]\(a_n\)[/tex] is:
[tex]\(a_n = \begin{cases} 4n + 3 & \text{if } n \text{ is even} \\ 4n - 2 & \text{if } n \text{ is odd} \end{cases}\)[/tex]
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PLEASE HELP I HAVE 5 MINUTES TO DO THIS AND I HAVE NO CLUE HOW
WILL MARK BRAINLIEST!!
In order to check if blood pressure measurements change if one is sitting or standing, a study was conducted where systolic blood pressure of 35 patients were recorded while in sitting position and then again while standing. The comparison of systolic blood pressure in the two positions is an example of testing the difference between: a-Two means from independent populations b-Two population proportions c-Matched pairs from two dependent populations d-All of the above options are equally viable testing methods
The comparison of systolic blood pressure in the sitting and standing positions is an example of testing the difference between matched pairs from two dependent populations.
The scenario described involves measuring the systolic blood pressure of the same set of patients in two different positions (sitting and standing). This creates a dependency between the measurements because each patient serves as their own control. In this case, the appropriate statistical test would be a paired t-test or a related test for dependent samples.
Two means from independent populations: This option would be suitable if the measurements were taken from two different groups of patients who were independent of each other, but in this case, the same individuals were measured in both positions. Two population proportions: This option would be applicable if the data involved proportions or categorical variables, rather than continuous measurements like blood pressure.
Matched pairs from two dependent populations: This option accurately represents the scenario described, as the measurements were taken from the same individuals in both positions, making them dependent on each other.
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PLEASE HELP IF I DONT PASS THIS TEST I FAIL AND I DON'T UNDERSTAND IT AND I AM ON THE VERGE OF MENTAL BREAKDOWN
Answer: One of the ways you can do all this is by zearn or by listening by your teacher.
Answer:
1 e
2 a
3 b
4 c
5 d
Step-by-step explanation:
i did the answers to the first question i dont know the rest sorry
Find the general solution of the following:
dy/dt + 4/ty = e^t/t^3
The general solution of the differential equation dy/dt + 4/ty = e raised to power of t/t raised to power of 3:
y = C * e raised to power of t * t raised to power of 4
where C is an arbitrary constant.
To find this solution, we can use the following steps:
First, we can factor out e raised to power of t/t raised to power 3 from the right-hand side of the equation. This gives us:
dy/dt + 4/ty = e raised to power t/t raised to power of 3 * (1/t)
Next, we can multiply both sides of the equation by ty to get:
dy + 4 = e raised to power of t/t raised to power of 2
Now, we can integrate both sides of the equation. This gives us:
y + 4t = C * e raised to power of t
Finally, we can solve for y to get the general solution:
y = C * e raised to power of t * t raised to power of 4
where C is an arbitrary constant.
The first step of the solution is to factor out e raised to power t/t raised to power of 3 from the right-hand side of the equation. This is possible because the derivative of e raised to power of t/t raised to power of 3 is e raised to power of t/t raised to power of 3 * (1/t).
The second step of the solution is to multiply both sides of the equation by ty to get dy + 4 = e raised to power of t/t raised to power of 2. This is possible because the derivative of ty is t + y.
The third step of the solution is to integrate both sides of the equation. This gives us y + 4t = C * e raised to power of t. This is possible because the integral of dy is y and the integral of e raised to power t/t raised to power of 2 is -2e raised to power of t/t + C.
The fourth step of the solution is to solve for y to get the general solution y = C * e raised to power t * t raised to power of 4. This is possible by dividing both sides of the equation by C * e raised to power of t.
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Please help me asap thanks
Answer:
x=3.5
Step-by-step explanation:
To make DEF similar to XYZ, the sides have to be in the same ratio. EF corresponds to YZ. EF=3, and YZ=4.5. The ratio 3:4.5 can be simplified to 2:3. Side DF corresponds to XZ. DF=7 and XZ=3x. So, the ratio is 7:3x.
To find x, we first find out what 3x is. In this case 3x is 3(7/2)=10.5. So, x=10.5/3=3.5.
From the equation, find the axis of symmetry of the parabola.
y = 2x^2 + 4 x - 1
a. x = 3
b. x = -1
c. x = -3
d. x = 1
PLEASE HURRY!!! WILL MARK AS BRAINLIEST!!!
Answer:
C
Step-by-step explanation:
Ur welcome
Because of the Central Limit Theorem, the normal distribution is also a good approximation for the Poisson distribution. For a draw from a Poisson with parameter 1 = 37, what is the theoretical mean?
The theoretical mean for a draw from a Poisson distribution with parameter λ is equal to λ itself. In this case, λ = 37, so the theoretical mean is also 37.
Explanation:
The Poisson distribution is commonly used to model the number of events occurring within a fixed interval of time or space, when these events occur with a known average rate λ. The probability mass function of the Poisson distribution is given by P(X=k) = (e^(-λ) * λ^k) / k!, where X represents the random variable representing the number of events and k is the observed value.
The Central Limit Theorem states that when independent random variables are added, their sum tends toward a normal distribution, regardless of the shape of the original distribution. For a Poisson distribution, as the parameter λ increases, the distribution becomes more symmetric and bell-shaped, resembling a normal distribution.
Since the mean of a Poisson distribution is equal to its parameter λ, the theoretical mean for a draw from a Poisson distribution with parameter 1 = 37 is 37. This means that, on average, 37 events are expected to occur within the given interval.
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Find all of the eigenvalues of the matrix A over the complex numbers C. Give bases for each of the corresponding eigenspaces. A = [2 -1]
[ 1 2]
λ1 = ___ has eigenspace span (__) (λ-value with smaller imaginary part) λ2 ___ has eigenspace span (__) (A-value with larger imaginary part)
An eigenvector corresponding to λ₂ = 2 - i is v₂ = [-1, 1].
To find the eigenvalues of matrix A, we need to solve the characteristic equation det(A - λI) = 0, where I is the identity matrix.
Let's compute the determinant:
det(A - λI) = |[2 - λ -1]|
|[ 1 2 - λ]|
Expanding along the first row, we have:
(2 - λ)(2 - λ) - (-1)(1) = (2 - λ)² + 1 = λ² - 4λ + 5 = 0
To solve this quadratic equation, we can use the quadratic formula:
λ = (-(-4) ± √((-4)² - 4(1)(5))) / (2(1))
= (4 ± √(16 - 20)) / 2
= (4 ± √(-4)) / 2
Since we are working over the complex numbers, the square root of -4 is √(-4) = 2i.
λ₁ = (4 + 2i) / 2 = 2 + i
λ₂ = (4 - 2i) / 2 = 2 - i
Now, let's find the eigenvectors corresponding to each eigenvalue.
For λ₁ = 2 + i, we solve the equation (A - (2 + i)I)v = 0:
[2 - (2 + i) -1] [x] [0]
[ 1 2 - (2 + i)] [y] = [0]
Simplifying, we have:
[0 -1 -1] [x] [0]
[ 1 0 - i] [y] = [0]
From the first equation, we have -x - y = 0, which implies x = -y.
Choosing y = 1, we have x = -1.
Therefore, an eigenvector corresponding to λ₁ = 2 + i is v₁ = [-1, 1].
For λ₂ = 2 - i, we solve the equation (A - (2 - i)I)v = 0:
[2 - (2 - i) -1] [x] [0]
[ 1 2 - (2 - i)] [y] = [0]
Simplifying, we have:
[0 -1 -1] [x] [0]
[ 1 0 i] [y] = [0]
From the first equation, we have -x - y = 0, which implies x = -y.
Choosing y = 1, we have x = -1.
In summary:
λ₁ = 2 + i has eigenspace span {[-1, 1]}
λ₂ = 2 - i has eigenspace span {[-1, 1]}
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PLEASE HELP THIS IS TIMED!!
Answer:
(D) 3/10
Step-by-step explanation:
So its split into 10 different rates each and its on the third split So 3/10.