Answer:
the answer ur looking for would be B
Step-by-step
how many functions are there from a set with 4 elements to a set with 8 elements?
There are 4096 functions from a set with 4 elements to a set with 8 elements.
To find the number of functions from one set to another, we use the formula:
Number of functions = (Number of elements in the codomain)Number of elements in the domain
In this case, the domain is the set with 4 elements and the codomain is the set with 8 elements. Plugging in these values into the formula, we get:
Number of functions = 84
Number of functions = 4096
Therefore, there are 4096 functions from a set with 4 elements to a set with 8 elements.
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Write an expression in simplest form for the perimeter of a right triangle with leg lengths of 3a^3 and 4a^3.
An expression is __a^3.
The expression of the perimeter of the right triangle is 12a³
What is perimeter?Perimeter is the distance around the edge of a shape. Learn how to find the perimeter by adding up the side lengths of various shapes.
Therefore , if the three sides of a triangle is represented by a, b,c then the perimeter = a+b+c.
The hypotenuse of the triangle =
√(3a³)² + 4a³)²
= √ 9a⁶+16a⁶
= √ 25a⁶
= 5 a³
therefore the perimeter of the triangle =
5a³ + 3a³ + 4a³
= 12a³
therefore the perimeter of the triangle is 12a³
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In a class of students, the following data table summarizes how many students passed
a test and complete the homework due the day of the test. What is the probability that
a student chosen randomly from the class passed the test?
Completed the homework
Did not complete the homework
Passed the test Failed the test
12
2
4
3
Answer:
20/27
Step-by-step explanation:
find the missing side lengths
Cos( 30 ) = 19√3 / x
√3 / 2 = 19√3 / x
Simplify √3 from both sides
1 / 2 = 19 / x
Multiply both sides by x
1 /2 × x = 19 / x × x
x / 2 = 19
Multiply both sides by 2
x / 2 × 2 = 19 × 2
x = 38
_____________________________
Sin( 30 ) = y / x
1 / 2 = y / 38
Multiply both sides by 38
38 × 1 / 2 = 38 × y / 38
38 / 2 = y
19 = y
y = 19
Answer this so i can get a good math grade
Answer:
64 degrees is the answer
hope it helpedplease help! need the answers in order to move on:) will give brainliest to correct answer!
Answer:
\(27^{\frac{1}{5} }\) = \(\sqrt[5]{27}\)
\(\sqrt[4]{256} = \sqrt[4]{2^{8} } = 2^{2} = 4\)
\(a^{\frac{b}{c} } = \sqrt[c]{a^{b} }\)
\(\sqrt[3]{125^{2} } = \sqrt[3]{ (5^{2})^{3} } = 5 ^{2} = 25\)
\(\sqrt{112} = \sqrt{2^{4} * 7 } = 4\sqrt{7}\)
Step-by-step explanation:
What’s the x and y to this
\(\huge\begin{array}{ccc}y=-\dfrac{3}{2}x+3\end{array}\)
The equation of a straight line passing through two points.
The "point-slope" form of the equation of a straight line:
POINTS:
\((x_1,\ y_1),\ (x_2,\ y_2)\)
EQUATION:
\(y-y_1=m(x-x_1)\)
where
SLOPE:
\(m=\dfrac{y_2-y_1}{x_2-x_1}\)
SOLUTION:We have two points whose coordinates can be read from the graph:
\((0,\ 3),\ (2,\ 0)\)
Substitute:
\(m=\dfrac{0-3}{2-0}=\dfrac{-3}{2}=-\dfrac{3}{2}\\\\y-3=-\dfrac{3}{2}(x-0)\\\\y-3=-\dfrac{3}{2}x\)
add 3 to both sides
\(y-3+3=-\dfrac{3}{2}x+3}\\\\\boxed{y=-\dfrac{3}{2}x+3}\)
El resultado de las operaciones 5/3 + 17 / 51-14 / 21 es
Answer:
4/3
Step-by-step explanation:
encontrar el mínimo común denominadorienes para que sea mas facil
5/3+17/51-14/21 es 5/3 + 1/3 -2/3 cuando todos son igual de los denominados.
Ahora escribi todos los 3 numeros que iguale lo mismo denominador
5+1-2/3
Ahora solo hace el mas y menos y esta listo
4/3 es lo que pasa cuando haces las operaciones.
What is the slope in y = -7
Answer:
I am almost positive it is 0
Which of the following is an equation of a line parallel to the equation y=4x+1?
evaluate the triple integral. e (x − y) dv, where e is enclosed by the surfaces z = x2 − 1, z = 1 − x2, y = 0, and y = 8
This integral is quite complex and does not have an analytical solution is 2pi ∫\(0^2\) \(e^{-r sin(\theta)\)) r (1 - 2\(r^2\)\(cos^{2}(\theta)\) (2\(-r^2\)) dr dtheta
To evaluate the triple integral of e^(x-y) over the region enclosed by the surfaces z=\(x^2-1, z=1-x^2, y=0,\) and y=8, we will use the cylindrical coordinates since the region is symmetric about the z-axis.
In cylindrical coordinates, we have:
x = r cos(theta)
y = r sin(theta)
z = z
The limits of integration for r, theta, and z are as follows:
0 <= r <= 2
0 <= theta <= 2pi
\(x^2\)-1 <= z <= 1-\(x^2\)
Substituting the cylindrical coordinates into the integral, we get:
∫∫∫ e^(x-y) dv = ∫∫∫ \(e^{(r cos(\theta) - r sin(\theta))\)r dz dr dtheta
Now, we need to determine the limits of integration for z in terms of r. Solving for z in the two equations that define the boundaries of the region, we get:
z =\(x^2\)- 1 -> z = \(r^2\)\(cos^2(\theta)\) - 1
z = 1 - \(x^2\) -> z = 1 - \(r^2\) \(cos^2(\theta)\))
Thus, the limits of integration for z become:
\(r^2 cos^2\)(theta) - 1 <= z <= 1 -\(r^2\) \(cos^2(\theta)\)
Substituting these limits into the integral and performing the integrations, we get:
∫∫∫ \(e^{r cos(\theta)\) - r sin(theta)) r (1 - \(r^2\) \(cos^2(\theta)\)) - \(r^2\) \(cos^2(\theta))\) dz dr dtheta
= ∫\(0^8\)∫\(0^2\)pi ∫\(0^2\) \(e^{r cos(\theta)\) - r sin(theta)) r (1 - 2\(r^2\) \(cos^2(\theta))\)dz dr dtheta
= 2pi ∫\(0^2\) \(e^{-r sin(\theta))\)r (1 - 2\(r^2\) \(cos^2(\theta))\) (2-\(r^2\)) dr dtheta
This integral is quite complex and does not have an analytical solution. Therefore, we need to evaluate it numerically using a computer or calculator.
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15 degree 20'' into sexagesimal seconds
The measure of the angle 15° 20'' in to sexagesimal seconds is 54020''.
Given angle measure is,
15° 20''
This can be read as 15 degrees and 20 seconds.
We have to convert 15 degrees to seconds first.
We know that,
1 degree = 60 minutes = 60'
1 minute = 60 seconds = 60''
So,
1 degree = 60 × 60 = 3600''
So,
15 degrees = 15 × 3600'' = 54,000''
Total seconds = 54000 + 20 = 54020''
Hence the measure in sexagesimal seconds is 54020''.
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Last question!!!!!
explain if posible
Answer:
<ABT = 43°<TBC = 43°Step-by-step explanation:
Given,
Line BT is the bisector of <ABC
So,
3x + 13 = 5x - 7
=> 13 + 7 = 5x - 3x
=> 20 = 2x
\( = > x = \frac{20}{2} \)
=> x = 10
As,
We got the value of x = 10
Therefore,
<ABT = 3x + 13 °
= 3×10 + 13 °
= 30 + 13°
= 43°
<TBC = 5x - 7°
= 5 × 10 - 7°
= 50 - 7°
= 43°
Hence,
Value of <ABT = 43° and value of <TBC = 43° (Ans)
a laboratory scale is known to have a standard deviation of 0.005 in repeated weightings. scale readings in repeated weightings are normally distributed, with the mean of all possible measurements equal to the true weight of the specimen. a specimen weighted 4 times on this scale. the average weight is 4.53 grams. suppose that we needed a 95% confidence interval for this specimen using this data. what would the margin of error be?
The margin of error for a 95% confidence interval for this specimen is 0.008 grams. Then the 95% confident specimen's true weight is 0.008 grams of the sample mean of 4.53 grams.
To find the margin of error for a 95% confidence interval, we need to determine the standard error of the mean. The standard error of the mean formula can be written as:
SE = σ/√n
where:
SE = standard error of the mean,
σ = the standard deviation of the population
n = the sample size.
the standard deviation of the laboratory = 0.005
sample size = 4.
calculating the standard error of the mean:
SE = 0.005/√4
= 0.0025
Next, we need to find the critical value for a 95% confidence interval. the sample size is small (n < 30), then we need to use a t-distribution.
Critical value = 3.182.
The formula for calculating the margin of error is:
ME = t*SE
where :
ME = margin of error
t = critical value = 3.182.
SE = standard error of the mean = 0.0025
By substuting the values, we get:
ME = t*SE
= 3.182*0.0025
= 0.008 grams
Therefore, the margin of error for a 95% confidence interval for this specimen is 0.008 grams. Then the 95% confident specimen's true weight is 0.008 grams of the sample mean of 4.53 grams.
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Terry buys 14 pens, 28 notebooks, and 18 markers. What is the ratio of notebooks to pens and markers?
Answer:
28:32
Step-by-step explanation:
a quiz consists of 15 matching questions with 15 possible matches from which to choose. if a student guesses on the first question, what is the probability that he will get the correct answer? (enter your probability as a fraction.)
The probability that the answerof the 1st question is correct is 1/15.
What is probability?The area of mathematics known as probability deals with numerical representations of the likelihood that an event will occur or that a statement is true. Simply put, the probability is the likelihood that something will occur. When we don't know how an event will turn out, we can discuss the likelihood or likelihood of several outcomes. Statistics is the study of events that follow a probability distribution.So, the probability of the correct answer:
The number of questions is 15.The number of matching answers is 15.So, the match of 1 question is always 1 answer.Probability formula: P = Favourable events/Total events
Where total events are 15 and favorable event is 1.
Now calculate as follows:
P = Favourable events/Total eventsP = 1/15Therefore, the probability that the answerof the 1st question is correct is 1/15.
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Which of the following can tell us the variation of data within a group of samples? (Check all correct options)
a. T-value
b. Variance
c. Standard deviation
d. Mean
Variance and Standard deviation can tell us the variation of data within a group of samples.
What is a variance?
Variance is a term used in probability theory and statistics to measure how far a group of numbers are spread out from their mean value.
In the context of hypothesis testing, the variance of two groups of data is compared to see if they are statistically significant.
A smaller variance indicates that the data points are closer together, whereas a larger variance indicates that the data points are farther apart.
What is Standard deviation?
The standard deviation is the square root of the variance, and it is used to express the average distance that data points deviate from the mean in a group of samples.
It is used in statistics to measure how tightly a set of data is clustered around its mean.
What is Mean?
The average value of a group of numbers is referred to as the mean.
It is calculated by adding all of the numbers together and then dividing by the total number of numbers.
What is T-value?
The t-value is used to test the null hypothesis, which states that there is no significant difference between two groups of data.
The t-value is calculated by subtracting the mean of one group from the mean of the other group and then dividing by the standard deviation of the two groups combined.
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suppose you roll a die. find the probability of the given event. simplify your answer. p(1,2, or 3)
Answer:
1/2
Step-by-step explanation:
There are 6 numbers and the chances of rolling a 1, 2 , or 3 is 3/6.
3/6 simplifies to 1/2
For a project, Mr. Green's physics students made rockets. During class last week, the students launched their rockets from the bleachers of the school's outdoor football stadium. The bleacher location where Martin launched his rocket was 48 feet off the ground. The height of Martin's rocket in feet, t seconds after launch, is shown by the function below.
h(t)=-16t^2+88t+48
Fill in the values below for the domain of this height function.
For this situation, the domain represents the rocket's
Answer:
The domain of a function represents the set of all possible input values, or independent variable, for which the function is defined. In this case, the function h(t) represents the height of Martin's rocket in feet at time t seconds after launch.
Since the rocket can't have negative time values, the domain of the function is all non-negative real numbers, or
t ≥ 0
Therefore, the values for the domain of this height function are:
Domain: [0, ∞) or 0 ≤ t < ∞
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Suppose each license plate in a certain state has three digits followed by three letters. The digits 4 and 5 are not used. So, there are 26 letters and 8 digits that are used. Assume that the letters and digits can be repeated. How many license plates can be generated using this format?
The required, there are 8998912 possible license plates that can be generated using this format.
Here, we have,
There are 8 digits that can be used for each of the three digits on the license plate, with two digits (4 and 5) that cannot be used.
Therefore, there are 8 choices for each of the three digits,
giving us 8 x 8 x 8 = 512 possible combinations for the digits.
Similarly, there are 26 letters that can be used for each of the three letters on the license plate.
Therefore, there are 26 choices for each of the three letters, giving us 26 x 26 x 26 = 17576 possible combinations for the letters.
Total number of license plates = number of choices for the digits x number of choices for the letters
= 512 x 17576
= 8998912
Therefore, there are 8998912 possible license plates that can be generated using this format.
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Evaluate the expression when a=33 and b=5 .
a-{20}{b}\)
Step-by-step explanation:
a = 33
b = 5
= a - 20/b
= 33 - 20/5
= 33 - 4
= 29
Write 23%, 36%, 4%, 1%, and 99% as fractions
Answer:
23/100
9/25
1/25
1/100
99/100
Step-by-step explanation:
Converted to fractions over 100 and found GCF of denominator and percentage
Answers: 23/100, 36/100, 4/100, 1/100, 99/100.
list five vectors in span {bold v 1v1,bold v 2v2}. do not make a sketch.
Below is the picture attached for the five vectors in span {bold v1 v1, bold v2 v2}.
How do you find the number of vectors in a span?Given a subspace S, every basis of S contains the same number of vectors; this number is the dimension of the subspace. To find a basis for the span of a set of vectors, write the vectors as rows of a matrix and then row reduce the matrix. The span of the rows of a matrix is called the row space of the matrix.
What is the span of 3 vectors?Then any linear combination of all three vectors is also a linear combination of the first two, so the span of all three is the same as the span of the first two, i.e. it is the set of all vectors in the plane. Case 3: no plane contains all three vectors. (So the vectors are all 3-space vectors.)
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URGENT!!! PLEASE HELP! WILL MARK BRAINLIEST!!!
Determine the probability of the treatment group’s mean being lower than the control group’s mean by 15 points or more. Then complete the statements.
The significance level is set at 5%, and the probability of the result is
(7.7/9.2/4.6/5/7.8)%, which is (less than/the same as/greater than)
the significance level. The result is ( not statistically significant/inconclusive/statistically significant)
The significance level is set at 5%, and the probability of the result is 0%, which is less than the significance level. The result is statistically significant.
We are given that;
The probability of the result=(7.7/9.2/4.6/5/7.8)%
Now,
To determine the probability of the treatment group’s mean being lower than the control group’s mean by 15 points or more, we need to find the difference between the two sample means and compare it to the standard error of the difference. The standard error of the difference can be estimated using the formula:
SE = √(s1^2 / n1) + (s2^2 / n2)
where s1 and s2 are the sample standard deviations and n1 and n2 are the sample sizes.
Assuming that the treatment group is group 1 and the control group is group 2, we can plug in the values given in the question:
SE = √(9.2^2 / 30) + (7.7^2 / 30)
SE = √3.02
SE = 1.74
The difference between the two sample means is:
x1 - x2 = 85 - 100
x1 - x2 = -15
To find the probability of this difference or lower, we need to find the z-score and use a normal distribution table or calculator3:
z = (x1 - x2) / SE
z = (-15) / 1.74
z = -8.62
Using a normal distribution table or calculator, we can find that P(z ≤ -8.62) ≈ 0, which means that the probability of the treatment group’s mean being lower than the control group’s mean by 15 points or more is very close to zero.
Therefore, by probability the answer will be statistically significant.
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There has been a person on here posting the same link to many answers, can you please delete their account? Thanks.
Yeah... they should.
show and explain ur work pls
Answer:
X^2 - 3
Is the answer
Step-by-step explanation:
Use a^2 - b^2 = ( a - b) (a + b)
a = x
b =
\(b = \sqrt{3} \)
(-3/2)-4 7/8=
Help
Help
Answer:
Step-by-step explanation:
lets remember this first, negative minus positive
keep change flip, this now becomes negative plus negative
-3/2 is 1 1/2 (negative), and then we add the 4 7/8 (negative)
add them together you get 6 and 3/8 POSITIVE because negative plus
negative always is positive.
a shipping company claims that 95% of packages are delivered on time. a student wants to conduct a simulation to estimate the number of packages that would need to be randomly selected in order to find a package that was not delivered on time. what is an appropriate assignment of digits to carry out this simulation?
An appropriate assignment of digits to carry out the simulation to estimate the number of packages that would need to be randomly selected in order to find a package that was not delivered on time when a shipping company claims that 95% of packages are delivered on time is
01 - 05 = Packages delivered not on time
06 - 100 = Packages delivered on time
Random numbers are numbers selected from a set of limited or unlimited numbers without a particular pattern for prediction. In this case the student can generate random numbers from a limited pool of digits from 1 to 100 using any random number generator like excel.
Given that 95% of packages are delivered on time. Based on this statement we can assign that 95% of these generated random numbers represent packages delivered on time, here that is 06 - 100.
Hence random numbers from 01 - 05, the 5% of generated random numbers represents the packages not delivered on time.
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Tell whether the ordered pair is a solution of the given system:
(0,0) ; {y<-x+3
{y
Answer:
yes the ordered pair is a solution
Step-by-step explanation:
(x, y) = (0,0)
y < -x + 3
0 < - (0) + 3
0 < 3
true, ordered pair is a solution
use numbers from 1 to 13 you can only use 9 numbers. each row, column. and diagonal has to equal 27
Answer:12+13+2=27
Step-by-step explanation: pretty self-explanatory