The expression as power [tex]16^{3/2}[/tex] is 64.
What are exponents and power?Exponents and powers are ways used to represent very large numbers or very small numbers in a simplified manner.
Given:
[tex]16^{3/2}[/tex]
using law of exponent
[tex]x^{(a * b)} = (x^a)^b[/tex]
Now, splitting 16 as 4 square
[tex]16^{3/2}[/tex]
=(4²[tex])^{3/2}[/tex]
=4³
=4 x 4 x 4
=64
Hence, expression as power [tex]16^{3/2}[/tex] is 64.
Learn more about exponents and power here:
https://brainly.com/question/12004326
#SPJ1
Answer: 16^2.25
This is the correct answer thanks
Describe the transformation that shows Figure A is similar to Figure B
Dilate figure A with center o and scale factor 2
What is transformation?
The transformation, or f: X → X, is the name given to a function, f, that maps to itself. The pre-image X becomes the picture X following the transformation. Any operation, or a combination of operations, such as translation, rotation, reflection, and dilation, can be used in this transformation. A function can be moved in one way or another using translation, rotation, reflection, and dilation. A function can also be scaled using rotation around a point.
Example: A square of side 5 units can be widened to a square of side 15 units using dilation math, but the square's shape doesn't change.
We know that re-sizing an item uses a transition called dilation.
In the figure the dimensions of the figures differ by a factor of 2.
Thus, dilation of figure A by a factor of 2 shows figure A is similar to Figure B
To know more about transformation visit:
https://brainly.com/question/28373354
#SPJ13
Factorize of
X4+8x2+144
The most appropriapriate choice for factorization will be given by-
[tex](x^2+12+4x)(x^2+12-4x)[/tex] is the required factorization.
What is factorization?
The process of breaking an algebraic expression into product of different factors is called factorization.
Here,
The factorization of [tex]x^4+8x^2+144[/tex] has been shown below-
[tex]x^4+8x^2+144[/tex]
[tex](x^{2} )^2 + 24x^2 +144 -16x^2\\(x^{2} )^2 + 2\times x^2\times 12+ 12^2-16x^2\\(x^2+12)^2 - (4x)^2\\(x^2 + 12+4x)(x^2+12-4x)[/tex]
This is the required factorization
To learn more about factorization, refer to the link:
https://brainly.com/question/22048677
#SPJ9
please help
The function g(r) represents the shift of the
function f(x) five units to the right. If f(x)=
It +5, which of the following is g(x)?
will give you brainliest simplify
After simplifying the expression we get: 12√6
Given, √864
Take the LCM of the given number:
864 = 2×2×2×2×2×3×3×3
Minimize the terms:
= √4×4×2×9×3
Reduce the terms:
= √16×9×2×3
multiply the terms:
= √144×2×3
= 12√6
Hence after simplifying we get the answer as 12√6
Learn more about Simplifying here:
brainly.com/question/723406
#SPJ1
Who should pay to reduce global warming 
Find the absolute maximum of f on [-10,7].
Select the correct choice below and, if necessary, fill in the answer boxes to complete your choice.
A. The absolute maximum of f is f(___) = ___.
(Type integers or fractions.)
B. There is no absolute maximum
A. The absolute maximum of the function f(x) is : f(-8) = 4.
We are given a graph of the function f(x).The domain of the function f(x) as seen from the graph is [-10, 7].The range of the function f(x) as seen from the graph is [-10, 4].We need to find the absolute maximum of the function f(x).From the graph, we can clearly figure out that the function has an absolute maximum value equal to 4.The function f(x) achieves a maximum y-value equal to 4 at an x-value of -8.Thus, the absolute maximum of the function f(x) is : f(-8) = 4.To learn more about similar functions, visit :
brainly.com/question/12431044
#SPJ1
In a soccer match, a tie at the end of two overtime periods leads to a "shootout" with five kicks taken by each team from the
penalty mark. Each kick must be taken by a different player. How many ways can 5 players be selected from the 11 eligible
players? For the 5 selected players, how many ways can they be designated as first, second, third, fourth, and fifth?
The number of ways that 5 players can be selected from the 11 eligible players is; 462 ways
The number of ways that the 5 selected players can they be designated as first, second, third, fourth, and fifth is; 120 Ways
How to solve Permutations and Combinations?
We are given that In a soccer match;
A tie at the end of two overtime periods leads to a "shootout" with five kicks taken by each team from the penalty mark.
Each kick must be taken by a different player
Now, to find the number of ways that 5 players can be selected from the 11 eligible players, we will use combination to get;
11C5 = 11!/(5! * (11 - 5)!)
= 11!/(5! * 6!)
= 462 ways
Now, if we care about order or position, we will use permutation to get the number of ways that the 5 selected players can they be designated as first, second, third, fourth, and fifth;
5P5 = 5!/(5 - 5)
= 120 Ways
Read more about Permutations and Combinations at; https://brainly.com/question/4658834
#SPJ1
how do I find the answer to [2−∣∣−23−2(−15)∣∣]÷(−13)
The answer to the expression [2−||−23−2(−15)||]÷(−13) is 5/13.
In the question ,
the expression is given as
=[2−||−23−2(−15)||]÷(−13)
Solving the terms inside [ ] , we have
2*(-15) = -30
Substituting the value of 2*(-15) in the expression , we get
=[2-||-23-(-30)||]÷(−13)
=[2−||−23+30||]÷(−13) ....as -(-30) = 30
Solving the terms inside the modulus || || , we get
=[2−||+7||]÷(−13) ...as ||-23+30|| represents the modulus(norm) value ..
So ,Simplifying further , we get
=[2−7]÷(−13) ....as 2-7 = -5
=[-5]÷(−13) ...as a÷b can be written as a/b
= -5/-13
writing the answer in the simplified form .
= 5/13
Therefore , the answer to the expression [2−||−23−2(−15)||]÷(−13) is 5/13.
Learn more about Algebraic Expressions here
https://brainly.com/question/7463555
#SPJ1
The City of Amistad wants to fence in a portion of Amitie Park for an inclusive play space for children. Determine how much fencing they will need if the diameter of the section is 90 feet. Use 3.14 for π.
To fence in a portion of Amitie Park for an inclusive play space for children total fencing required of the section with diameter 90 feet is 282.6 feet.
As given in the question,
To fence in a portion of Amitie Park for an inclusive play space for children
Diameter of the section = 90 feet
Let r be the radius
r = diameter/2
⇒ r = 90 / 2
⇒r = 45 feet
Total fencing required to fence a play space
= 2πr
= 2 × 3.14 × 45
= 282.6 feet
Therefore, to fence in a portion of Amitie Park for an inclusive play space for children total fencing required of the section with diameter 90 feet is 282.6 feet.
Learn more about diameter here
brainly.com/question/16110663
#SPJ1
The parent function f(x) = square root of x is transformed to g(x) = f(-x) - 2
Answer:
A
Step-by-step explanation:
below is the parent function graphed and according to the chart we move the graph down 2 units and reflect it over the x axis and a is the only option
Which linear function has the same slope as the one that is represented by the table?
y = -1/5x +1/2 linear function has the same slope .
What is slope ?A line's steepness and direction are measured by the line's slope. Without actually using a compass, determining the slope of lines in a coordinate plane can assist in forecasting whether the lines are parallel, perpendicular, or none at all. Any two different points on a line can be used to calculate the slope of any line. The ratio of "vertical change" to "horizontal change" between two different locations on a line is calculated using the slope of a line formula. We shall comprehend the slope-finding method and its applications in this essay.
First solve for the slope
m =[tex]\frac{y_{2} -y_{1} }{x_{2} -x_{1} }[/tex]
m=[tex]\frac{0-\frac{3}{5} }{\frac{1}{2} -\frac{1}{5} }[/tex]
m = [tex]\frac{-1}{5}[/tex]
Look for the linear equation with the same value of m after determining the slope (parallel equation).
To learn more about slope visit :
brainly.com/question/11643415
#SPJ9
Which relation is a function?
Responses
A coordinate grid containing a U shape with arrows on both ends that opens to the right. The bottom portion of the U passes through the origin.
Image with alt text: A coordinate grid containing a U shape with arrows on both ends that opens to the right. The bottom portion of the U passes through the origin.
Coordinate grid with graph of a vertical line at x equals 3.
Image with alt text: Coordinate grid with graph of a vertical line at x equals 3.
A coordinate grid with the graph of a circle centered at the origin and passing through the point begin ordered pair 2 comma 1 end ordered pair.
Image with alt text: A coordinate grid with the graph of a circle centered at the origin and passing through the point begin ordered pair 2 comma 1 end ordered pair.
A coordinate grid with graph of a curve that increases through the third quadrant through the origin and exits the first quadrant
The relation which is a function among the answer choices is; A coordinate grid containing a U shape with arrows on both ends that opens to the right. The bottom portion of the U passes through the origin.
What is a function?A function is a relation in which each element of the domain is associated with exactly one element of the codomain.
A relation can be tagged a function if it describes that there should be only one output (y - value) for each input ( x - value). Put simply, a function is a kind of relation (defined by a set of ordered pairs) in which case, it ensures that every x-value is associated with only one y-value.
On this note, since the relation described in the first answer choice is such that every x-value is associated with only one y-value as it is a parabola (quadratic function), it is termed a function.
Read more on function;
https://brainly.com/question/25638609
#SPJ1
Describe the location of the point having the following coordinates.
Negative abscissa, positive ordinate
• Quadrant 1
• Quadrant 2
• Quadrant 3
• Quadrant 4
The correct option for Negative abscissa, positive ordinate is -
• Quadrant 2
What is defined as the coordinate system?Graphing is done using a rectangular coordinate system with two axes. The horizontal axis is referred to as the x-axis, and the vertical axis is referred to as the y-axis. The x-axis is a straight line. The y-axis is a horizontal line. That is, we are combining two real numbers. We have the option of moving left-right or up-down.The coordinate plane is divided into quadrants that move counterclockwise.The origin is the point at which the two axes intersect. It has a value of 0 for x and a value of 0 for y.For the given question;
The other names for x and y axis are;
x -axis - abscissa
y- axis - ordinate
Thus, Negative abscissa means negative x axis.
And, positive ordinate means positive y axis.
This, lines in second quadrant.
Thus, Negative abscissa, positive ordinate will give the point is second quadrant.
To know more about the coordinate system, here
https://brainly.com/question/4726772
#SPJ13
Jasmine paid $17.60 for a blender that was originally $22. What percent discount did she receive?
Answer:
20% off
Step-by-step explanation:
22-17.60=4.4
(5)4.4=22
sears is having a 35% off sale on all tires sells for $125, find the sales price.
Answer:
This video provides an example of how to determine the original price of an item given the discounted price and the percent mark
Step-by-step explanation:
Find the (a) mean, (b) median, (c) mode, and (d) midrange for the data and then (e) answer the given question.
Listed below are the jersey numbers of 11 players randomly selected from the roster of a championship sports team.
What do the results tell us?
55 64 45 77 88 51 41 54 35 67 18 D
a. Find the mean...
The mean is
(Type an integer or a decimal rounded to one decimal place as needed.)
Mean=54.1 Median=55 Mode=1 Midrange=53 are the correct values of mean, median, mode and midrange.
(a) Mean= sum of data/ number of data
=(55+64+45+77+88+51+41+54+35+67+18)/11
=595/11
=54.09 or 54.1
(b) Median is the middle value, which in this case is 51.
(c) Mode is the count of the number stating how many time it has been repeated in the data.
For instance in the given data :-
55 64 45 77 88 51 41 54 35 67 18
mode of 55 is 1, since it appears only one time.
No numbers in the given data repeats, i.e. all the values are unique. Thus the mode of the given data is 1.
(d) Mid-range is (highest value in the data + lowest value in the data)/2
in this case, the highest value is 88 and the lowest value is 18. Substituting these values in the formula:
(88+18)/2
=106/2
=53
What is mean median mode and midrange?
Mean is the sum of data divided by number of data, Median is the middle value of the data when arranged in ascending or descending order, Mode is the count of the number stating how many time it has been repeated in the data and Mid-range is highest value in the data plus lowest value in the data whole divided by 2.
to learn more about mean median mode and midrange check out:
https://brainly.com/question/14202747
#SPJ9
1. The amount of time 26 students spend on their phones on a given day (rounded to the nearest
hour) is recorded as follows.
0, 3, 4, 4, 5, 5, 6, 6, 6, 7, 7, 7, 7, 8, 8, 8, 8, 9, 9, 9, 10, 10, 10, 11, 11, 12
Create a dot plot of the information. "Be sure to label all necessary parts!
PLEASE ANSWER Will mark brainliest
The total number of dots tells us the total number of observations of the values. the dot plot of the information are attached below.
How does the dot plot work?A Dot Plot is a graphical display of quantitative data consisting of dots plotted on a simple scale. Suppose we're measuring something whose values are numeric. For each value of that thing we observe, we plot a dot above that value in the number line.
If a value occurs more than once, then the dots are placed one above the other thus, that the height of the column of dots represents the frequency for that value.
Given data set:
{0, 3, 4, 4, 5, 5, 6, 6, 6, 7, 7, 7, 7, 8, 8, 8, 8, 9, 9, 9, 10, 10, 10, 11, 11, 12}
First we need to Label the increments on the given line to include the range of data.
Then Label them order -2 to 16 increasing in 1 unit.
Now Label the dot plot with a suitable describing the dot plot.
Then Count the number of data points for each discrete category.
The dot plot of the information are attached below.
Learn more about dot plot here:
https://brainly.com/question/22746300
#SPJ1
The data in this table represents a linear function
What is the slope of this line?
The slope of the line is [tex]\frac{2}{3}[/tex]
What is slope of a line?The increase divided by the run is the slope. By examining the rise and run, you can infer the slope of a line from its graph. A line has the property that its slope remains constant throughout.
Determine the coordinates of two points along the line that you choose. Find the difference between these two points' y-coordinates (rise). Find the difference between these two points' x-coordinates (run). Divide the difference in x-coordinates (rise/run or slope) by the difference in y-coordinates.
The slope of the line is [tex]\frac{y_{2}-y_{1} }{x_{2}- x_{1} }[/tex]
⇒ [tex]\frac{-7-(-5)}{9-6}[/tex]
⇒ [tex]\frac{-7 + 5}{ 3} = \frac{2 }{3}[/tex]
Thus m = 2/3
Similarly in second case : [tex]\frac{y_{2}-y_{1} }{x_{2}- x_{1} }[/tex]
⇒ [tex]\frac{-15 - (-11)}{ 21 - 15}[/tex]
⇒ [tex]\frac{4}{6}[/tex]
= 2/3
Thus the slope of the given table is 2/3
To know more about slope visit:
https://brainly.com/question/14511992
#SPJ13
Which of the following methods would NOT be used to prove that two triangles are congruent?
Two triangles cannot be proven to be congruent using the method: A. Prove all sets of corresponding angles are congruent.
How to Prove that Two Triangles are Congruent?Two triangles are congruent to each other if they have the same shape and the same size, that is, all three sets of corresponding sides and all three sets of corresponding angles of the two triangles are congruent to each other.
Also, the following condition or criteria can be used to determine if two triangles are congruent to each other:
The HL congruence theorem: when two right triangles have corresponding equal hypotenuse and a pair of corresponding congruent legs, then they are congruent triangles by HL theorem.The SSS congruence theorem: two triangles having all three pairs of corresponding sides congruent are proven to be congruent by SSS congruence theorem.The SAS congruence theorem: Two triangles with two pairs of corresponding congruent sides and a pair of non-included congruent angle are congruent by the SAS.Thus, the method that cannot be used is: A. Prove all sets of corresponding angles are congruent.
Learn more about congruent triangles on:
https://brainly.com/question/1675117
#SPJ1
U.S. growers harvested 11 billion bushels of corn in 2005. About 1.9 billion bushels were exported, and 1.6 billion bushels were used for ethanol. Choose one bushel of corn at random. What is the probability that it was used either for export or for ethanol?
Answer:
32% or 31.82%
Step-by-step explanation:
so total = 11 billion and export + ethanol = about 3.5 billion so the probability is 3.5/11 or 35/110 which, as a percent, can be written as 32% or more accurate, 31.82% so this is answer
Find the equation of the line in slope intercept form passes through the points (-8,-4) and (-4,-9)
Written in Slope Intercept Form:
[tex]y=-\frac{5}{4} x-14[/tex]
Hope this helps! If so, please lmk! Thanks and good luck!
Can someone help with this question?✨
The equation for the linear function f(x) is f(x) = 2 / 7 x - 10 / 7
How to find the equation for the linear function?The linear function is f(x)
f(-2) = - 2 and f(5) = 0
Therefore, let's find the equation for the linear function f(x):
A linear function is a function that represents a straight line on the coordinate plane.
Therefore, linear function is represented as follows:
y = mx + b
where
m = slopeb = y-interceptHence,
-2 = m(-2) + b
0 = 5m + b
b = -5m
Therefore,
m(-2) + - 5m = -2
-2m - 5m = -2
-7m = -2
m = 2 / 7
Therefore,
b = - 5 (2 / 7)
b = - 10 / 7
Hence,
f(x) = 2 / 7 x - 10 / 7
learn more on linear function here: https://brainly.com/question/12919226
#SPJ1
write a quadratic function
If you spend 1.5 hours a week studying for English and 6.5 hours studying for math what is the ratio
of time spent studying in math to studying for English?
Question Help: please break it down because I don’t understand
Answer:
the ratio is 6.5 : 1.5
Step-by-step explanation:
it asks "what is the ratio of time spent studying in math to studying for English?"
ratio uses the ":" mark. also you put the parts like this:
first part : second part
the parts can be found by looking for the "to" as indicated bold in the question
the first part of the ratio it asks is the "time spent studying in math" in hours which is 6.5
the second part of the ratio it asks is the "time spent studying in English" in hours which is 1.5
so the answer is:
6.5 : 1.5
Answer:
Ratio of time spent studying in math to studying for English
[tex]\large \text{$=\dfrac{13}{3}$ }[/tex]
Step-by-step explanation:
What is a ratio?
We use ratios to compare two numeric quantities or quantities with the same units
Basically a ratio of one quantity x to another quantity y can be expressed in the following ways, all read as the ratio of x to y
x/ y
x to y
x : y
The most useful way of representing a ratio is by using the fractional form because it can be used in determining other quantities
In this problem you spend 6.5 hours/week studying for math and 1.5 hours/week studying for English
Since both units are the same (hours/week) we can compute the ratio as
[tex]{\dfrac{\text{Number of hours studying math}}{\text{Number of hours studying English}}\\\\= \dfrac{6.5}{1.5}\\\\[/tex]
We can simply this fraction as follows
Multiply both numerator and denominator by 10
[tex]= \dfrac{65}{15}\\\\[/tex]
Divide both sides by 5
[tex]\dfrac{65 \div 5}{15 \div 5}\\\\= \boxed{\bold{\dfrac{13}{3}\\\\}}[/tex]
This is the same as 13:3 or 13 to 3
(Be careful what is the numerator and what is the denominator.
If the question had asked for the ratio of hours studying English to hours studying Math then the ratio would be 1.5/65 = 15/65 = 3/13)
You want to fence off a rectangular area of yard using the back side of your house as one of the sides. You have a total of 150 yards of fence. If the area of the fenced in portion comes to 2,800 square yards, what are the dimensions of the fenced-in area? Show all work for full credit.
The dimensions of the fenced-in area is
either length = 35 yards and width = 80 yards ,
or length = 40 yards and width = 70 yards .
In the question ,
it is given that
the total length of the fence = 150 yards
let L be the length of the area to be fenced
let B be the width of the house
Given that one side of the area is fenced using the back side of the house
So, the perimeter of the area to be fenced is 2L+B
equating both the perimeter we get
2L+B=150
B=150-2L ....(i)
Given the area fenced-in portion = 2800 yards
also the fenced-in portion area = L×B
hence
L*B=2800
Substituting the values of B from equation(i) , we get
L*(150-2L)=2800
150L - 2L² = 2800
2L² - 150L + 2800 = 0
simplifying further , we get
L² - 75L + 1400 = 0
L² -40L -35L +1400 = 0
L(L-40) -35(L-40) = 0
(L-35)(L-40) = 0
So , L = 35 yards or L = 40 yards
Using L = 35 yards , we get B = 150-2(35) = 80 yards
and using L =40 yards , we get B = 150-2(40) = 70 yards .
Therefore , The dimensions of the fenced-in area is
either length = 35 yards and width = 80 yards ,
or length = 40 yards and width = 70 yards .
Learn more about Area and Perimeter here
https://brainly.com/question/13677395
#SPJ1
If a dragon can eat an entire cow weighing 500 kilograms in 12 seconds, how long will it take to eat a human weighing 90kilograms I need to know what the answer to that is and how I'd write it out mathematically
Dragon needs 2.16 seconds to eat 90 kilograms of human beings.
What is the ratio?
It is described as the comparison of two quantities to determine how many times one obtains the other. The proportion can be expressed as a fraction or as a sign: between two integers.
It is given that,
If a dragon can eat an entire cow weighing 500 kilograms in 12 seconds,
500 kilograms = 12 seconds
By unitary method
1 kilogram = 12 / 500
1 kilogram = 0.024 second
For 90 kilograms
90 kilogram=90 × 0.024 second
90 kilogram = 2.16 second
Thus, a dragon needs 2.16 seconds to eat 90 kilograms of human beings.
Learn more about the ratio here:
brainly.com/question/13419413
#SPJ1
Which of the following points would be on the graph of the linear equation? Select all that apply.
A. (-4,10)
B. (-2,8)
C. (5, -6)
Answer:
Outline 4 factors to the conside.
the girl ran 5 miles * 2 + 60 + 54
Answer:
Equation = 1/4 x + 25 = 70
Solution = $180
Explanation:
Let the original amount she had before she went shopping be x
If she spent one-fourth on sloth, then the amount spent on cloth will be;
1/4 x
If she receives another $25 a week later totalling her money $70, then the equation that represents the situation will be;
1/4 x + 25 = 70
Find the solution
1/4 x + 25 = 70
1/4 x = 70 - 25
1/4 x = 45
x = 45 * 4
x = 180
Hence the amount she had before going for shoppind was $180
Write an equation (a) in slope-intercept form and (b) in standard form for the line passing through (-2,5) and parallel
to x + 3y = 7.
a) The equation of the line in slope-intercept form is
(Type your answer in slope-intercept form. Use integers or fractions for any numbers in the equation.)
b) The equation of the line in standard form is
(Type your answer in standard form.)
The equation of the line passing through points (-2, 5) can be written as follows
slope intercept form: y = -x/3 + 13/3standard form: x + 3y = 13How to write the equation of the line in slope-intercept formEquation of a straight line is an equation of the form y = mx + c, where
m = slopec = interceptThe slope is the gradient which is the ratio of the difference in the y direction to the difference in x direction.
given that the equation of the line is x + 3y = 7
rewriting the equation gives
y = -x/3 + 7/3
hence the slope is -1/3, and this is equated with the formula for slope
[tex]\frac{y-y_{1} }{x-x_{1} }=-\frac{1}{3}[/tex]
substituting the values for points (-2,5) and cross multiplying gives
3 (y - 5) = - ( x - -2)
y - 5 = - (x + 2 ) /3
y - 5 = -x/3 - 2/3
y = -x/3 - 2/3 + 5
y = -x/3 + 13/3
Rewriting the equation of the line in standard form is done as follows
y = -x/3 + 13/3
3y = -x + 13
x + 3y = 13
The equations are gotten from substitution the values to the formula for slope and substituting. Rearranging the equation gives the equation in slope intercept form and in standard form.
Read more on equation of a straight line: https://brainly.com/question/18831322
#SPJ1
Harry downloads album A which has 11 tracks.
Each track on A costs the same.
The total cost of downloading A is £10.45
Harry also downloads album B and B has 14 tracks.
a) Work out the total cost of downloading B.
Assume each track costs the same as a track on A.
b) In fact, compared to the cost of each track on A the cost of 5 tracks on B is less by 5p each the cost of 9 tracks on B is more by 5p each.
Work out the actual total cost of downloading B.
Part a: Cost of downloading album B = 13.3 euros
Part b: Cost of downloading album B = 12.6 euros
Number of tracks in album A = 11 tracks
The total cost of downloading album A = 10.45 euro
Cost of each track on album A = Total cost of album/Number of tracks in the album
= 10.45/11
= 0.95 euro
Part a:
Number of tracks in album B = 14 tracks
Cost of album B = Number of tracks in album B * Cost of each track
= 0.95*14
= 13.3 euros
Part b:
The cost of 5 tracks on album B is 5p less therefore, the cost of 5 tracks will be 0.90*5 = 3.60 euros
The cost of 9 tracks on album B is 5p more therefore, the cost of 9 tracks will be = 1*9 = 9 euros
The total cost of downloading album B = 9+3.6 = 12.6 euros
Learn more about arithmetic:
https://brainly.com/question/22260035
#SPJ9