Answers
Answer:
Table C)
Step-by-step explanation:
\(y=-x+3\\x+y=3\\Hence,\\Considering\ Table\ C\,\\Substituting\ x=-3,y=6\\6=3+3\\6=6 (LHS=RHS)\\\\Substituting\ x=0, y=3\\3=3 (LHS=RHS)\\\\Substituting\ x=3, y=0,\\0=-(3)+3\\0=0 (LHS=RHS)\)
Answer:
the 3rd one :)
Step-by-step explanation:
Related Questions
A photo is reduced with a scale factor of 1 to 3. If the photo is now 4 inches wide, how wide was the original photo? Show the math.
Answers
Answer:
12 inches wide.
Step-by-step explanation:
It is reduced to a 1:3 factor. where 1 is the new length and 3 is the old length. We can write a proportion \(1:3=4:x\). Now, if four numbers are in a proportion we can cross-multiply and we get \(1x=3\cdot 4 \rightarrow x = 12\).
There are two urns, each containing an infinite number of balls. In the first urn, 70% of the balls are red and 30% are blue. In the second urn, 70% of the balls are blue and 30% are red. You randomly drew 12 balls from one of the urns (i.n., the first urn or the second urn). Out of the 12 balls, 8 are red and 4 are blue. What is the probability that you drew the balls from the first urn
Answers
The probability that the balls are drawn from the first urn is 0.99.
The given problem provides information on two urns. In the first urn, 70% of the balls are red, and 30% are blue, while in the second urn, 70% of the balls are blue, and 30% are red. From one of the urns, 12 balls are randomly drawn, out of which 8 are red, and 4 are blue.
We need to determine the probability that the balls are drawn from the first urn.
Let A be the event that the balls are drawn from the first urn. The probability of selecting urn 1 is given by P(A). Out of the 12 balls drawn, 8 are red and 4 are blue. Hence, we can write P(RRBBRRRRRRRR) = P(A) x P(8 red balls and 4 blue balls are drawn | A).
The probability of selecting either urn 1 or urn 2 is 0.5, which is represented as P(A) = P(B). Therefore, P(RRBBRRRRRRRR) = 0.5 x (0.7)^8 x (0.3)^4 = 0.00424.
Let B be the event that the balls are drawn from the second urn. The probability of selecting urn 2 is given by P(B). Out of the 12 balls drawn, 4 are red and 8 are blue. Hence, we can write P(BBRRBBBBBBBB) = P(B) x P(4 red balls and 8 blue balls are drawn | B).
Therefore, P(BBRRBBBBBBBB) = 0.5 x (0.3)^4 x (0.7)^8 = 0.00043.
The probability that the balls are drawn from the first urn is given by P(A | RRBBRRRRRRRR) = P(A) x P(RRBBRRRRRRRR) / [P(A) x P(RRBBRRRRRRRR) + P(B) x P(BBRRBBBBBBBB)].
Substituting the values, we get P(A | RRBBRRRRRRRR) = 0.5 x 0.00424 / [0.5 x 0.00424 + 0.5 x 0.00043] = 0.989 which is approximately 0.99.
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I need help please with this question!!
Answers
NEED HELP ASAP WILL GIVEE BRAINALIST TO THE CORRECT ANSWER DUE IN 20 MIN
Answers
Answer:
Below
Step-by-step explanation:
4/ 9 z - 5/9 z + 2 - 3/9 z - 9
(4-5-3)/9 z +2 - 9
-4/9 z +2-9
-4/9 z - 7
Determine the magnitude of the sum of vectors. please help i’m not sure what to do once i have the components.
Answers
Answer:
110.24
Explanation:
First, let us decompose the vectors into their components.
For the vector on the right, decomposing into components gives:
x - component: 80 cos (30°)
y - component: 80 sin (30°)
Therefore.
\(v_{right}=[80\cos(30^o),80\sin(30^o)]\)Now for the vector on the left, we have
x - component: 91 cos (130°)
y - componentL 91 sin (130°)
Therefore,
\(v_{left}=[91\cos(130^o),91\sin(130^o)]\)Now adding these two vectors gives
\(v_{r\imaginaryI ght}+v_{left}=[80\cos(30^o),80\sin(30^o)]+[91\cos(130^o),91\sin(130^o)]\)Adding the components gives
\(v_{r\imaginaryI ght}+v_{left}=[80\cos(30^o)+91\cos(130^o),80\sin(30^o)+91\sin(130^o)]\)Now since cos (30) = √3/ 2, sin 30 = 1/2, cos (130) = -.0643, and sin (130) = 0.766; the above becomes
\(v_{r\mathrm{i}ght}+v_{left}=[\frac{80\sqrt{3}}{2}+91(-0.643),80*(1/2)+91*(0.766)]\)the above simplifies to give ( using a calculator)
\(v_{r\mathrm{i}ght}+v_{left}=[10.79,109.71]\)Now the final step is to find the magnitude of the above vector.
\(|v_{r\mathrm{i}ght}+v_{left}|=\sqrt{(10.79)^2+(109.71)^2}\)\(\boxed{|v_{r\mathrm{i}ght}+v_{left}|=110.24.}\)which is our answer!
Andrea rented a canoe for 5 hours. The rental company charged her a $20 fee plus $5 per hour. Which graph best represents the rental company
charges?
Answers
Answer:
45
Step-by-step explanation:
5 times 5 is 25 plus 20 is 45 hope this helps
the lady tasting tea. this is one of the most famous experiments in the founding history of statistics. in his 1935 book the design of experiments (1935), sir ronald a. fisher writes, a lady declares that by tasting a cup of tea made with milk she can discriminate whether the milk or the tea infusion was first added to the cup. we will consider the problem of designing an experiment by means of which this assertion can be tested . . . our experiment consists in mixing eight cups of tea, four in one way and four in the other, and presenting them to the subject for judgment in a random order. . . . her task is to divide the 8 cups into two sets of 4, agreeing, if possible, with the treatments received. consider such an experiment. four cups are poured milk first and four cups are poured tea first and presented to a friend for tasting. let x be the number of milk-first cups that your friend correctly identifies as milk-first. (a) identify the distribution of x. (b) find p(x
Answers
P(X = k) = (1 - p)^4 for k = 0
P(X = k) = 4p(1 - p)^3 for k = 1
P(X = k) = 6p^2(1 - p)^2 for k = 2
P(X = k) = 4p^3(1 - p) for k = 3
P(X = k) = p^4 for k = 4
Note that these probabilities add up to 1, as they should for any probability distribution.
(a) The distribution of X can be modeled as a binomial distribution with parameters n = 4 and p, where p is the probability that the friend correctly identifies a milk-first cup as milk-first. Each cup that the friend tastes can either be identified correctly (success) or incorrectly (failure), and there are 4 cups that were poured milk-first in the experiment.
(b) To find the probability mass function (PMF) of X, we need to find the probability of each possible value of X. Since X is a binomial random variable, the PMF of X is given by:
P(X = k) = (n choose k) * p^k * (1 - p)^(n - k)
where (n choose k) is the binomial coefficient, given by:
(n choose k) = n! / (k! * (n - k)!)
where n! denotes the factorial of n.
In this case, n = 4 and there are 4 cups that were poured milk-first, so we have:
P(X = 0) = (4 choose 0) * p^0 * (1 - p)^4 = (1 - p)^4
P(X = 1) = (4 choose 1) * p^1 * (1 - p)^3 = 4p(1 - p)^3
P(X = 2) = (4 choose 2) * p^2 * (1 - p)^2 = 6p^2(1 - p)^2
P(X = 3) = (4 choose 3) * p^3 * (1 - p)^1 = 4p^3(1 - p)
P(X = 4) = (4 choose 4) * p^4 * (1 - p)^0 = p^4
Since X can only take on values between 0 and 4, the PMF of X is given by:
P(X = k) = (1 - p)^4 for k = 0
P(X = k) = 4p(1 - p)^3 for k = 1
P(X = k) = 6p^2(1 - p)^2 for k = 2
P(X = k) = 4p^3(1 - p) for k = 3
P(X = k) = p^4 for k = 4
Note that these probabilities add up to 1, as they should for any probability distribution.
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A stable level within a phase is defined as a set of observations that ______
A. cluster around a line sloping up to the right when graphed B. cluster around a line sloping down to the right when graphed C. cluster around a horizontal line when graphed are distributed equally along both axes
Answers
The correct option is C: Cluster around a horizontal line when graphed are distributed equally along both axes.
A level within a phase is defined as a set of observations that cluster around a horizontal line when graphed. This means that the data points tend to remain relatively constant or steady during that particular phase.
When plotted on a graph, these observations form a horizontal line, indicating little variation or change. This stability implies that the system or process being observed is in a balanced state, with minimal fluctuations or disturbances.
The horizontal line represents a steady state, indicating that the system or process being observed is maintaining a consistent level without significant fluctuations or trends.
A stable level is characterized by a consistent and predictable pattern, which can be useful in analyzing and understanding the behavior of the system or process over time.
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If cyanide in a stream next to a gold mine increases from 240 ppm to 360 ppm, what percent increase is this?
Answers
Given :
Initial concentration , 240 ppm .
Final concentration , 360 ppm .
To Find :
Percent increase.
Solution :
Percentage increase is given by :
\(=\dfrac{Final-Initial}{Initial}\times 100\\\\=\dfrac{360-240}{240}\times 100\\\\=50\%\)
Therefore , percent increase is 50 % .
Hence , this is the required solution .
These figures are similar. The perimeter and area of one are given. The perimeter of the other is also given. Find its area and round to the nearest tenth.
Perimeter= 20m
Area=19.6m^2
Perimeter=34m
What is the Area=
Answers
The area of the larger figure that is similar to the smaller one is: 28.2 m².
How to Find the Area of Similar Figures?Where A and B represent the areas of two similar figures, and a and b are their corresponding side lengths, respectively, the formula that relates their areas and side lengths is:
Area of figure A / Area of figure B = a²/b².
Given that the two figures are similar as shown in the image above, find each of their respective side lengths if we are given the following:
Perimeter of smaller figure = 20 m
Area of smaller figure = 19.6 m²
Perimeter of larger figure = 34m
Area of larger figure = x
Therefore:
20/34 = a/b
Simplify:
10/17 = a/b.
Find the area (x) of the larger figure using the formula given above:
10²/12² = 19.6/x
100/144 = 19.6/x
100x = 2,822.4
x = 2,822.4/100
x ≈ 28.2 m²
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PLEASE LOOK AT PHOTO! WHOEVER ANSWERS CORRECTLY I WILL MARK BRAINIEST!!!
Answers
(2, -3) move up 2 so (2, -1)
To which family does the function y = (x 2) superscript one-half baseline 3 belong? quadratic square root exponential reciprocal
Answers
The function y = √(x + 2) + 3 is a quadratic function. Then the correct optin is A.
What is a quadratic equation?It is a polynomial that is equal to zero. Polynomial of variable power 2, 1, and 0 terms are there. Any equation having one term in which the power of the variable is a maximum of 2 then it is called a quadratic equation.
The equation is given below.
\(y = (x+2)^{1/2} + 3\)
The equation can be written as
\(y - 3= (x+2)^{1/2}\)
Square on both sides, we have
\(\begin{aligned} (y - 3)^2 &= [(x+2)^{1/2}]^2 \\\\x + 2 &= y^2 + 9 -6y \\\\x &= y^2 -6y +7 \end{aligned}\)
The equation is a quadratic equation.
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Answer:
A) Quadratic
Explanation:
Hope you have a great day!
When determining the empirical formula from experimental data, if your pseudo-formula was C2.67H3O1, what would you multiply the subscripts by to get all whole number subscripts
Answers
To get all whole number subscripts in the empirical formula, you would need to multiply the subscripts by a common factor that will give you the smallest possible whole numbers. In this case, you would need to multiply all subscripts by 3 to get C8H9O3.
This is because 2.67 is approximately equal to 8/3, 3 is approximately equal to 9/3, and 1 is equal to 3/3. Multiplying by 3 will simplify the subscripts and give you a whole number ratio of atoms in the empirical formula. This method works for any pseudo-formula with non-whole number subscripts, as long as you find a common factor to multiply by that will give you whole numbers.
In this case, you can divide each subscript by the smallest one (1) to get the ratio: C2.67: H3: O1. Now, find the smallest whole number that can convert 2.67 into a whole number when multiplied. In this case, that number is 3. So, multiply all subscripts by 3:
C(2.67 x 3)H(3 x 3)O(1 x 3) = C8H9O3
This gives you an empirical formula of C8H9O3.
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The midpoint of AB is M(3, -1). If the coordinates of A are (5, 1) what are the coordinates of B?
Answers
The coordinates of B is (1,-3) .
A midpoint formula is a formula used to identify the midpoint between two data points. Except for geometry, research in economics uses this calculation to calculate elastic moduli, etc.The Midpoint Formula is given by \((x, y)=(\frac{x_1+x_2}{2} ,\frac{y_1+y_2}{2} )\) where, \((x_1,y_1)\) are the coordinates of the first point and \((x_2,y_2)\) are the coordinates of the second point.It is given that midpoint of AB is (3, -1) and coordinates of A is (5, 1) .
Let the coordinate of B be (x, y) .
By using midpoint formula , we get
\((3, -1)=(\frac{5+x}{2} , \frac{y+1}{2} )\\\)
On comparing , we get the x- coordinate
\(\frac{5+x}{2} =3\\\5+x=6\\x=1\)
On comparing , we get the y- coordinate
\(\frac{1+y}{2} =-1\\\\1+y=-2\\y=-3\)
Hence , the coordinates of B is (1,-3) .
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In order to determine whether the differences between group means are statistically significant, ANOVA examines the differences between groups within groups between and within groups neither between nor within groups In a linear equation, the value of Y when X is 0 is called the slope.
Answers
In a linear equation, the value of Y when X is 0 is called the y-intercept, not the slope.
In order to determine whether the differences between group means are statistically significant, ANOVA examines the differences between groups.
ANOVA, which stands for Analysis of Variance, is a statistical method used to compare the means of two or more groups.
It analyzes the variability between group means and within group variability to assess whether there are significant differences among the groups.
The main idea behind ANOVA is to compare the variation between groups with the variation within groups.
If the variation between groups is significantly larger than the variation within groups, it suggests that there are meaningful differences among the groups.
This implies that the differences between group means are statistically significant, indicating that the groups are not just randomly different.
ANOVA achieves this by calculating an F-statistic, which is the ratio of the variability between groups to the variability within groups.
If the F-statistic is large enough to exceed a critical value based on the chosen significance level, it indicates that the group means are significantly different.
Regarding the statement about a linear equation, it is incorrect.
In a linear equation, the value of Y when X is 0 is called the y-intercept, not the slope.
The slope refers to the rate of change of Y with respect to changes in X.
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if f(x)=5x-1 and g(x) 2x^2 +1, what is 6he value of (f×g)(-3)
Answers
Answer: D
Step-by-step explanation:
\(f(3)=5(-3)-1=-16\\\\\\g(3)=2(-3)^{2}+1=19\\\\(f\times g)(3)=-16 \times 19=\boxed{-304}\)
how to indicate that a function is non decreasing in the domain
Answers
To indicate that a function is non-decreasing in a specific domain, we need to show that the function's values increase or remain the same as the input values increase within that domain. In other words, if we have two input values, say x₁ and x₂, where x₁ < x₂, then the corresponding function values, f(x₁) and f(x₂), should satisfy the condition f(x₁) ≤ f(x₂).
One common way to demonstrate that a function is non-decreasing is by using the derivative. If the derivative of a function is positive or non-negative within a given domain, it indicates that the function is non-decreasing in that domain. Mathematically, we can write this as f'(x) ≥ 0 for all x in the domain.
The derivative of a function represents its rate of change. When the derivative is positive, it means that the function is increasing. When the derivative is zero, it means the function has a constant value. Therefore, if the derivative is non-negative, it means the function is either increasing or remaining constant, indicating a non-decreasing behavior.
Another approach to proving that a function is non-decreasing is by comparing function values directly. We can select any two points within the domain, and by evaluating the function at those points, we can check if the inequality f(x₁) ≤ f(x₂) holds true. If it does, then we can conclude that the function is non-decreasing in that domain.
In summary, to indicate that a function is non-decreasing in a specific domain, we can use the derivative to show that it is positive or non-negative throughout the domain. Alternatively, we can directly compare function values at different points within the domain to demonstrate that the function's values increase or remain the same as the input values increase.
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GEOMETRY Express the volume of each solid as a monomial. a. 9h6b. 9h8c. 27h6d. 27h8
Answers
The volume of a rectangular prism of width W, length L, and Height H is calculated as:
\(V=W\cdot L\cdot H\)The solid in the figure is a cube (W = L = H) with a side length of
\(W=L=H=3h^2\)Calculating the volume:
\(\begin{gathered} V=3h^2\cdot3h^2\cdot3h^2 \\ V=27h^6 \end{gathered}\)Choice c.
what is 2x(2x-5)=36 please
Answers
Step-by-step explanation: To solve the equation 2x(2x-5)=36, we first need to distribute the 2x:
2x(2x-5) = 2x * 2x - 2x * 5 = 4x^2 - 10x
Now that we have the expanded equation, we can set it equal to 36:
4x^2 - 10x = 36
Next, we'll isolate x by subtracting 36 from both sides:
4x^2 - 10x - 36 = 0
This is a quadratic equation, which we can solve using the quadratic formula or by factoring. Here's one way to solve it using factoring:
(2x-9)(2x+4) = 0
We can set each factor equal to zero and solve for x:
2x-9 = 0, so x = 9/2
2x+4 = 0, so x = -4/2 = -2
So x = 9/2 and x = -2 are the solutions to the equation 2x(2x-5)=36.
(0.2m^2n)^3 *1000m^4n^7
simplify
Answers
Answer: 8m^10n^10
Thats the answer i hope i was helpful!
this goes to the question i just posted someone please help me please
Answers
Answer:
Ok only if yo help me with my last question
Step-by-step explanation:
Tina's teacher wrote 7/8 on the whiteboard. What percentage is equivalent to the fraction that Tina's teacher wrote on the whiteboard?
Answers
I think it's like 0.88, but I believe that's it rounded up.
The attendance for a week at a local theatre is normally distributed, with a mean of 4000 and a standard
deviation of 500. Draw the normal curve to represent the normally distributed attendance for the week.
What percentage of the attendance figures would be less than 3500? What percentage of the attendance
figures would be greater than
5000? What percentage of the attendance figures would be between 3700
and 4300 each week?
Answers
About 15.87% of the attendance figures would be less than 3500.
About 0.62% of the attendance figures would be greater than 5000.
About 34.13% of the attendance figures would be between 3700 and 4300 each week.
The mean is the average of a set of numbers, while the standard deviation measures the spread of the data around the mean. The normal distribution is fully characterized by its mean and standard deviation. In this case, the mean attendance is 4000, and the standard deviation is 500.
To answer the first question, "What percentage of the attendance figures would be less than 3500?" we need to calculate the area under the curve to the left of 3500. We can use a standard normal distribution table or a calculator to find this area. The result is approximately 15.87%.
To answer the second question, "What percentage of the attendance figures would be greater than 5000?" we need to calculate the area under the curve to the right of 5000. Again, we can use a standard normal distribution table or a calculator to find this area. The result is approximately 0.62%.
To answer the third question, "What percentage of the attendance figures would be between 3700 and 4300 each week?" we need to calculate the area under the curve between 3700 and 4300. We can use a standard normal distribution table or a calculator to find this area. The result is approximately 34.13%.
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An estimator is _____ if the Expected Value of the estimator is exactly equal to the parameter that it is estimating A. Unbiased B. Efficient C. Consistent D. Normally
Answers
An estimator is Unbiased if the Expected Value of the estimator is exactly equal to the parameter that it is estimating. The correct answer is A.
An estimator is a statistic used to estimate an unknown population parameter, such as the mean or variance. An unbiased estimator is one that, on average, produces estimates that are equal to the true value of the population parameter being estimated. This means that the expected value of the estimator is exactly equal to the parameter it is estimating.
For example, if we are trying to estimate the population mean μ using a sample mean x', the sample mean x' is an unbiased estimator of μ if the expected value of x' is exactly equal to μ. In other words, if we take many random samples from the population, the average of those sample means will be very close to the population mean.
Unbiasedness is an important property for an estimator to have because it ensures that the estimator is not systematically overestimating or underestimating the population parameter.
An estimator that is biased will tend to consistently overestimate or underestimate the true value of the parameter, which can lead to incorrect conclusions or decisions based on the estimates.
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write and expression for the perimeter of a rectangle with length L and width 6
Answers
Answer:
P = 2(L + 6)
Step-by-step explanation:
The perimeter (P) of a rectangle is = 2(Length + Width)
Length = L
Width = 6
.: P = 2(L + 6)
The L gets multiplied by 2 because there are two L in a rectangle and 2 times 6 because there are two widths
how does attitude, beliefs and knowledge impact how a teacher delivers a lesson
Answers
Attitude, beliefs, and knowledge shape a teacher's delivery: attitude affects engagement, beliefs influence instructional decisions, and knowledge enables effective communication and learning facilitation.
Attitude, beliefs, and knowledge play crucial roles in shaping how a teacher delivers a lesson. Here's a detailed explanation of their impacts:
Attitude:
Attitude refers to a teacher's mindset, emotions, and approach towards teaching. A positive attitude fosters enthusiasm, motivation, and a genuine passion for the subject matter. This translates into an engaging and dynamic teaching style, creating an environment conducive to learning. Conversely, a negative attitude can lead to disinterest, lack of enthusiasm, and a disengaged teaching approach, which can hinder students' engagement and comprehension.
Beliefs:
A teacher's beliefs influence their instructional decisions and pedagogical strategies. Beliefs about students' capabilities, learning styles, and the purpose of education can shape the teacher's approach to delivering a lesson. For example, if a teacher believes that all students have the potential to succeed, they may employ differentiated instruction techniques to cater to diverse learning needs. Conversely, if a teacher holds limiting beliefs about students' abilities, they may adopt a one-size-fits-all approach, which may hinder student progress.
Knowledge:
A teacher's knowledge encompasses both subject matter expertise and pedagogical content knowledge. Profound knowledge of the subject allows a teacher to effectively structure and present the lesson, answer student queries, and provide relevant examples. Pedagogical content knowledge helps in selecting appropriate instructional strategies, adapting to student needs, and assessing learning effectively. Without a strong knowledge base, a teacher may struggle to deliver accurate information, engage students, or address misconceptions.
Collectively, attitude, beliefs, and knowledge significantly impact a teacher's delivery of a lesson. A positive attitude enhances student motivation and engagement. Strong beliefs in students' potential and individualized instruction foster a supportive learning environment. Adequate subject knowledge and pedagogical skills enable effective communication and facilitate meaningful learning experiences. By combining these elements, teachers can create an impactful and effective learning environment that nurtures student growth and achievement.
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For any input, there is only
possible output
O Three
O Two
O One
O Zero
Answers
Answer:
I think it's one
Step-by-step explanation:
why?
any input needs at most one output
Sorry if you can’t see but is a 6 on top and on the right it is a -1
Answers
Solution
The rule of the diamond problem is given below
I will label the question as follow
Basically, we need to find a and a + b
\(\begin{gathered} a=\text{?} \\ b=-1 \\ ab=6 \\ a+b=\text{?} \end{gathered}\)From the above info
\(\begin{gathered} ab=6 \\ a(-1)=6 \\ -a=6 \\ a=-6 \end{gathered}\)\(a+b=-6+(-1)=-7\)The diamond problem solution is
Two whole number, three over five of the pupils in a school are boys. If there are 96 girls and the school,how many pupils are there in the school?
Answers
Answer:
106 students
Step-by-step explanation:
If you take the 2 3/5 and covert it into a whole number by: 2×3+5 = 10
and then you have 96 girls so you add the whole number you got that is 10 and the 96 girls
=96+10= 106 students
⋆ ˚｡⋆୨୧˚hope this helped˚୨୧⋆｡˚ ⋆
if m is a nonzero integer then m 1/m is always greater than 1
T/F
Answers
If m is a nonzero integer, then m^(1/m) is not always greater than 1.
The statement is false.
To determine if m^(1/m) is greater than 1, we can consider different values of m. For positive values of m, such as m = 2, m^(1/m) = 2^(1/2) = √2, which is approximately 1.414 and greater than 1.
However, if we consider negative values of m, such as m = -2, m^(1/m) = (-2)^(1/(-2)) = (-2)^(-1/2), which is equal to 1/√(-2). Since the square root of a negative number is not defined in the real number system, the value of m^(1/m) is not defined for negative values of m.
Therefore, the statement that m^(1/m) is always greater than 1 for nonzero integers m is false.
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