By using the concept of dilation, we find that scale factor from A to B is equal to l' / 5, where l' is the length of the shortest side of the quadrilateral B.
What is the scale factor between two quadrilaterals?
Scale factor is a key variable used to dilate lengths and distances by rigid transformations. Then, the length of the shortest side of the quadrilateral B is equal to the product of the scale factor and the length of the shortest side of the quadrilateral A. Mathematically speaking, this kind of rigid transformation is represented by the following formula:
r = l' / l
Where:
r - Scale factorl - Length of the shortest side of the quadrilateral A.l' - Length of the shortest side of the quadrilateral B.If we know that l = 5, then the length of the shortest side of the quadrilateral B is equal to the following linear equation:
l' = 5 · r
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Help me
Evaluate the expression.
Do not round your answer.
image:-
Answer:
[tex]\frac{2}{9}[/tex]
Step-by-step explanation:
2 ( [tex]\frac{1}{3^2}[/tex] )
= 2 ( [tex]\frac{1}{9}[/tex] )
= 2 × [tex]\frac{1}{9}[/tex]
= [tex]\frac{2}{9}[/tex]
2 1 Find the equation of the line that passes through the point (-4,16) and is perpendicular to the line y =
[tex] \frac{2}{5}x - \frac{1}{5} [/tex]
the equation using the slope-intercept form. Write the equation using slope intercept form
Answer: Equation using slope intercept from y= -(5/2)x +26
Step-by-step explanation:
Write an equation of the line (in slope-intercept form) that is perpendicular to the line y=(2/5)x-(1/5) and contains the point (-4,16).
The line given is y=(2/5)x-(1/5)
Which we can rewrite in y= mx+b form as
y=(2/5)x-(1/5)
So slope of this line is (2/5)
A line perpendicular will have slope = -(5/2) , Which is (1/m)
Equation of new line will be
y = -(5/2)x +b
Now we need to find b
Plug in Point (-4,16)
Replace with the (-4,16) values
16 = (5/2) (-4) +b
solve it, 16=(-10)+b
16+10=b
b=26
Equation using slope intercept from y= -(5/2)x +26
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The absolute value function is a -------- linear function.
piecewise
different
complete
negative
Opositive
Answer:
Piecewise
Step-by-step explanation:
It is basically made up of 2 linear functions
Need help now please Due today! Substitution: 1. (x+5)^2 -y ; x= -2 y=1 2. 3x+4y^2 ; x=-3 y=5
The value of equation 1 = 8 and The value of equation 2 = 91 after substituting the given values.
Given the 2 equations,
1)[tex](x+5)^{2} -y[/tex] ; for x=-2 and y=1
2)3x+4[tex]y^{2}[/tex]; for x=-3 and y=5
Equation 1
⇒[tex](x+5)^{2} -y[/tex] ; for x=-2 and y=1
⇒[tex](-2+5)^{2}[/tex]-1 {substituting x=-2 and y=1 }
⇒[tex]3^{2}[/tex]-1
⇒9-1
⇒8
Equation 2
⇒3x+4[tex]y^{2}[/tex]; for x=-3 and y=5
⇒3(-3)+4[tex](5)^{2}[/tex] {substituting x=-3 and y=5 }
⇒-9+4(25)
⇒-9+100
⇒91
Therefore, The value of equation 1 = 8 and The value of equation 2 = 91 after substituting the given values.
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Point B is the midpoint of AC. Find Point C
A (0,6) B (5, -8)
[tex]~~~~~~~~~~~~\textit{middle point of 2 points } \\\\ A(\stackrel{x_1}{0}~,~\stackrel{y_1}{6})\qquad C(\stackrel{x_2}{x}~,~\stackrel{y_2}{y}) \qquad \left(\cfrac{ x_2 + x_1}{2}~~~ ,~~~ \cfrac{ y_2 + y_1}{2} \right) \\\\\\ \left(\cfrac{ x +0}{2}~~~ ,~~~ \cfrac{ y +6}{2} \right) ~~ = ~~\stackrel{\textit{\LARGE B}}{(5~~,~~-8)} \\\\[-0.35em] ~\dotfill\\\\ \cfrac{x+0}{2}=5\implies \boxed{x=10} \\\\\\ \cfrac{y+6}{2}=-8\implies y+6=-16\implies \boxed{y=-22}[/tex]
f(-6)=3(3-2x). What is the evaluating function?
Step-by-step explanation:
or,(-6)=3(3-2x)
or,(-6)=9-6x
or,-6-9=-6x
or,-15=-6x
or,-15+6=x
or,-9=x
x=-9
Anna is in charge of the alumni fundraiser for her alma mater. She is selling pre-sale tickets for $10 and at-the-door tickets for $20. The venue has the capacity to hold 400 people. The graph represents the number of tickets Anna needs to sell to offset her upfront costs and raise $5,000 for her school
A.400
B.300
C.250
D.100
Number of At-the-Door tickets Anna needs to sell to make her goal = 100
Anna is selling pre-sale and at-the-door tickets.
Let 'x' be the number of pre-sale tickets and 'y' be the number of at-the-door tickets.
Price of a pre-sale ticket = $10
Price of an at-the-door ticket = $20
Total price to be raised = $5000
So the equation corresponding is 10x+20y = 5000-----------(1)
Total number of people the venue can hold = 400
Thus the next equation is x+ y = 400---------(2)
From the graph the line with points (0,250) and (500,0) represent the equation (1) since 10 x 0 + 20 x 250 = 5000 and 10 x 500 + 20 x 0 = 5000.
The line with points (0,400) and (400,0) represent the equation (2) as 0+400 = 400 and 400+0 = 400.
So to find x and y we need to solve equations (1) and (2).
10 x (2) ⇒ 10x+10y = 4000-------(3)
Now subtract (3) from (1)
⇒ 10y = 1000
⇒ y = 100
Hence the number of At-the-Door tickets Anna needs to sell to make her goal = 100
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In the formula for calculating the standard deviation, what does the letter n represent? a. summation b. sample size c. mean score for group d. individual score
The correct option is (b) sample size.
In the formula for calculating the standard deviation, the letter n represent sample size.
What is standard deviation?
Standard deviation is a statistical standard measure in finance that, when applied to an investment's annual rate of return, sheds light on its historical volatility.
Some key features regarding the standard deviation are-
The higher the standard deviation of a security, the larger the variance between every price and the mean, indicating a wider price range.A volatile stock, for example, has a high standard deviation, whereas a stable blue-chip stock has a low deviation.A square root of a value deduced from correlating data points to a population's collective mean is used to calculate standard deviation. The formula is:
Standard Deviation = [tex]\sqrt{\frac{summation n to i=1 (x_{i}-bar x )}{n-1} }[/tex]
Where,
[tex]x_{i}[/tex]= value of the i th point the the given data set.
[tex]barx[/tex]= mean value
n = total number of data points.
Thus, the standard deviation, on the other hand, determines all ambiguity as risk, even when it is in the investor's favor, like above-average returns.
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If (m-1÷m)=3 , find the value of m^3 - 1÷m^3
The value of given equation i.e. [tex]m^{3} -\frac{1}{m^{3} }[/tex] is [tex]\frac{63}{8}[/tex]
Given a equation i.e.[tex]\frac{m-1}{m}[/tex]=3 and asked to calculate the value of the equation [tex]m^{3} -\frac{1}{m^{3} }[/tex]
To calculate the value of [tex]m^{3} -\frac{1}{m^{3} }[/tex] , Need to use various operations like subtraction and division)
Given .[tex]\frac{m-1}{m}[/tex]=3
⇒m-1=3m ( cross multiplies 3 and m)
⇒2m=-1( subtraction is used)
⇒m=-[tex]\frac{1}{2}[/tex]( division is used)
Thefore the value of m in the given equation i.e.[tex]\frac{m-1}{m}[/tex]=3 is -[tex]\frac{1}{2}[/tex]
⇒ [tex]m^{3} -\frac{1}{m^{3} }[/tex]
Here the value of m =-[tex]\frac{1}{2}[/tex]
Substituting the value of m in the given equation
⇒[tex](\frac{-1}{2} )^{3}[/tex]-[tex](-2)^{3}[/tex]
⇒[tex]\frac{-1}{8}[/tex]+8(addition is used)
⇒[tex]\frac{64-1}{8}[/tex]
⇒[tex]\frac{63}{8}[/tex]
Therefore, the value of the given equation i.e. [tex]m^{3} -\frac{1}{m^{3} }[/tex] is [tex]\frac{63}{8}[/tex]
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2: Strategically decompose 1.57 to round to the nearest whole and nearest tenth.
Caleb earns points on his credit card that he can use towards future purchases. He earns four points per dollar spent on flights, two points per dollar spent at hotels, and one point per dollar spent on all other purchases. Last year, he charged a total of $9,480 and earned 14,660 points. The amount of money spent on flights was $140 more than twice the amount of money spent on hotels. Write the system representing this situation. *Use "f" for flights *Use "h" for hotels *Use "t" other *do NOT use commas
Answer:
Caleb earns points on his credit card that he can use towards future purchases. He earns four points per dollar spent on flights, two points per dollar spent on hotels, and one point per dollar spent on all other purchases. Last year, he charged a total of $9,480 and earned 14,660 points. The amount of money spent on flights was $140 money than twice the amount of money spent on hotels. Find the amount of money spent on each type of purchase.
The function can be used to determine the side length, x, of a cube given the surface area of the cube, a. the function v(x) = x3 can be used to find the volume of a cube. how can these functions be combined?
The composite function or combined functions of x(A) and V(x) is V(x(A)) = (√A/6)³ option (C) is correct.
It is defined as a special type of relationship, and they have a predefined domain and range according to the function every value in the domain is related to exactly one value in the range.
A function relates an input to an output.
x2 (squaring) is a function
x3+1 is also a function
Sine, Cosine, and Tangent are functions used in trigonometry.
Although part of the question is missing the question is The function x(A)= √A/6 can be used to determine the side length, x, of a cube given the surface area of the cube, A. The function V(x)= x³ can be used to find the volume of a cube. how can these functions be combined?
a. x(v(A))= sqrt x^3/6
b. V(x(A)) = sqrt x3/6
c. V(x(A))=(sqrt A/6)^3
d. x(v(A))= (sqrt A/6)^3
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Write an absolute value expression you could use to find the absolute value of 3.1 + (-6.3)
The absolute value of a number expression 3.1 + (-6.3) is 3.2 the answer is 3.2.
What is an arithmetic operation?It is defined as the operation in which we do the addition of numbers, subtraction, multiplication, and division. It has a basic four operators that is +, -, ×, and ÷.
It is given that:
The number expression is:
= 3.1 + (-6.3)
To find the absolute value of 3.1 + (-6.3):
= |3.1 + (-6.3)|
= |3.1 - 6.3|
= |-3.2|
= 3.2
Thus, the absolute value of a number expression 3.1 + (-6.3) is 3.2 the answer is 3.2.
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If the librarian had a budget of $500 and wanted to purchase as many DVDs as possible, which values of x and y could represent the number of new-release and classic movies bought?
Answer: Answer is 16 new releases and 22 classic movies.
Step-by-step explanation:
He'll buy 16 new releases and 22 classic movies.
Let x = number of new releases
Let y = number of classics.
The equation to solve the question will be:
20x + 8y = 500
When x= 16 and y = 22, thus will be:
= 20x + 8y
= 20(16) + 8(22)
= 320 + 176
= 496
Therefore, since this is the number closest to $500, therefore this will be the appropriate number of movies that he can buy.
In conclusion, he'll buy 16 new releases and 22 classic movies.
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the points (-3,1), (-1,1), (0,-1), (-1,-3), (-3,-3) and (-4,-1) are vertices of a polygon. what type of polygon is formed by these points?
Answer:
The type of polygon that is formed is a Hexagon because of its 6 sides.
Step-by-step explanation:
When you graph all of these points into a coordinate grid it should look like this:
8. Two straight lengths of wire are placed on the ground, forming vertical angles. If the measure (3 points)
of one of the angles formed is 72°, what are the measures of the other three angles? Explain
your answer.
Solve for f. quick I really don’t have time
Answer:
እሺ እሺ አትጨነቅ ከፈለገ አይነግረኝም።
Joann works in a publicity office at the state university. she is paid $ 13.00 an hour for the first 35 hours she works each week and $ 19.50 an hour for every hour after that. if she makes $ 572.00 one week, how many hours did she work?
Joann worked for 64 hours in week.
Let the number of hours she work be x. The payment for first 35 hours will be added with the multiple of number of extra hours and payment for the same.
Forming the equation according above mentioned statement :
13 + 19.5x = 572
Solving the equation to find the number of hours worked by Joann
Shifting 13 to Right Hand Side of the equation
19.5x = 572 - 13
Performing subtraction on Right Hand Side of the equation
19.5x = 559
Shifting 19.5 to Right Hand Side of the equation at denominator
x = 559 ÷ 19.5
x = 28.67 hours
Rounding off the number of hours, we get the value = 29
So, Joann worked for 29 extra hours. To find the total number of hours she worked, we will simply add her working hours.
Total number of hours Joann worked = 35 hours + extra hours
Total number of hours Joann worked = 35 + 29
Total number of hours Joann worked = 64 hours
Hence, Joann worked for 64 hours in week.
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determine the position of each hidden term. -14 is the _th term of 2 1/5, 2 , 1 4/5
-14 is the 81th term.
What is the position of -14?The first step is to determine the relationship between the numbers in the sequence. When examined, it can be seen that the number decline by 1/5.
To confirm : 2 1/5 - 2 = 1/5
The linear equation that can be used to determine the position of a number is:
2 1/5 - 1/5(x)
Where x is the position of the number
For example, the third number is
2 1/5 - 1/5(3) = 1 4/5
Given the number, the position of the number can be determined using the above linear equation:
-14 = 2 1/5 - 1/5(x)
In order to determine the value of x, take the following steps:
Multiply through by 5
(-14 x 5) = (11/5 x 5) - (x / 5 x 5)
-70 = 11 -x
Combine similar terms: 70 + 11 = x
Add similar terms: x = 81
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Stimulus: The student is presented with a polygon (square,
rectangle, parallelogram, or night triangle) on a grid and the scale
factor at which it was created.
Example Stem: This diagram of a rectangular city park was drawn
using a scale factor of 1 centimeter to 20 meters.
In the diagram shown, assume each square on the grid is 1
centimeter in length.
What is the area, in square meters, of the actual park on which this
scale drawing is based?
Scale factor for the drawing from actual park = 1/20
Area of the actual park = 1200 cm²
Area of a Rectangle. A = l × b. The area of any rectangle is calculated, once its length and width are known. By multiplying length and breadth, the rectangle's area will obtain in a square-unit dimension
Length of the rectangular city park = 5 cm
Width of the rectangular park = 6 cm
Using scale factor 1 cm = 20 meters
Scale factor = Length of the park in drawing/ actual length of park
⇒1/20.
5/actual length of park = 1/ 20
Actual length = 5 × 20 = 100 meters
Actual width = 6 × 20 = 120 meters
Area of the rectangular park = length × width
square meters
Therefore, Scale factor from actual length to the length in drawing = 1 : 20
Area of the rectangular park = 1200 square feet
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A truck can be rented from Company A for $90 a day plus $0.40 per mile. Company B charges $60 a day plus $0.70 per mile to rent the same truck.
Find the number of miles in a day at which the rental costs for Company A and Company B are the same.
The number of miles in a day at which the rental costs for Company A and Company B are the same will be 10 miles.
How to calculate the value?Let the number of miles be represented by x.
Therefore the equation for the first company will be 90 + 0.4m
The equation for the second company will be 60 + 0.7m
Therefore, we will equate them. This will be:
90 + 0.4m = 60 + 0.7m
Collect like terms
90 - 60 = 0.7m - 0.4m
0.3m = 30
m = 30/0.3
m = 10
The number of miles will be 10 miles.
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Find the unit vectors that are parallet to the tangent line to the parabola y=x^2 at the point (3,9)
The unit vector is [tex]\left.\pm \frac{1}{\sqrt{17}} \overline{(i}+\overline{4}\right)[/tex].
What are unit vectors?Unit vectors have a magnitude of exactly one unit. They are extremely useful for a variety of reasons.In particular, the unit vectors [0,1] and [1,0] can be combined to form any other vector.To find the unit vector:
Differentiate y = x² with respect to x.
We get, dy/dx = 2x.
The slope of a tangent:
[tex]\mathrm{P}(2,4)=\left(\frac{\mathrm{dy}}{\mathrm{dx}}\right)_{\mathrm{atP}(2,4)}=2 \times 2=4[/tex]
Tangent P equation is:
y - 4 = 4(x - 2)y = 4x - 4y = 4xy = 4x is the equation of a line passing through the origin O and parallel to the tangent at P.
4x = y, z = 0x/1 = y/4, z = 0This line's direction ratios are 1, 4, and 0, and its direction cosines are:
[tex]\pm \frac{1}{\sqrt{1^2+4^2+0^2}}, \pm \frac{4}{\sqrt{1^2+4^2+0^2}}, 0\\\pm \frac{1}{\sqrt{17}}, \pm \frac{4}{\sqrt{17}}, 0[/tex]
The number of unit vectors parallel to the tangent line at P(2,4) is:
[tex]\left.\pm \frac{1}{\sqrt{17}} \overline{(i}+\bar{j}\right)[/tex]
Therefore, the unit vector is [tex]\left.\pm \frac{1}{\sqrt{17}} \overline{(i}+\overline{4}\right)[/tex].
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The correct question is given below:
Find the unit vectors that are parallel to the tangent line to the parabola y=x^2 at the point (2, 4).
find the point that partitions CD in the ratio 1:2 c(-1,7) and d(5, 1)
Coordinates of the point that partitions the line into the given ratio is; (1, 5)
How to divide a line segment?
If the ratio dividing a line segment represents a:b, then the formula to divide the line segment is;
Coordinates = {(bx₁ + ax₂)/(a + b), (by₁ + ay₂)/(a + b)}
From our question, we have the ratio as;
1:2. Thus; a = 1 and b = 2
Our coordinate of CD is; C(-1,7) and D(5, 1)
Thus;
x₁ = -1
x₂ = 5
y₁ = 7
y₂ = 1
Coordinates of the point that partitions the line into the given ratio is;
Coordinate = {(2*-1 + 1*5)/(1 + 2), (2*7 + 1*1)/(1 + 2)}
Coordinate = (3/3, 15/3) = (1, 5)
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PLEASE HELP ITS DUE IS ONE HOUR !!!
The correct responses for the points, segments, lines, planes, are as follows;
1. M, S, X, and Y
2. Two lines are; [tex] \overleftrightarrow{SX}[/tex], [tex] \overleftrightarrow{YR}[/tex]
3. [tex] \overline {MX}, \overline{MY}, \overline {MS}, \overline{MR}[/tex]
4. [tex]\overrightarrow{MT}[/tex]
5. S, M, T
6. T
7. [tex] \overline{MT}[/tex]
8. [tex] \overleftrightarrow{SX}[/tex]
9. [tex] \overleftrightarrow{SX}[/tex]
10. [tex] \overline{MR}[/tex]
11. A line
12. A plane
13. A point
14. A plane
15. A ray
16. A segment
Please find attached the drawing for the figures in questions 17, 18, 19,and 20
What are the required points, segments, lines, planes and rays?1. A point in Euclidean geometry is a location in space.
Four points are; M, S, X, and Y
2. A line has no thickness and extends indefinitely in both directions.
Two lines are;
[tex] \overleftrightarrow{SX}[/tex]
[tex] \overleftrightarrow{YR}[/tex]
3. Four segments are;
[tex] \overline {MX}, \overline{MY}, \overline {MS}, \overline{MR}[/tex]
4. A ray that has M as an endpoint is \overrightarrow{MT}
5. Three collinear points are; S, M, T
6. A point not on [tex] \overline{YR}[/tex] is T
7. A segment with points T and M as its endpoints is [tex] \overline{MT}[/tex]
8. A line that does not contain R is [tex] \overleftrightarrow{SX}[/tex]
9. A line containing M is; [tex] \overleftrightarrow{SX}[/tex]
10. A segment of lies on [tex] \overleftrightarrow{YR}[/tex] is MR
11. A toothpick suggests a line
12. A floor suggests a plane
13. The tip of a pin suggests a point
14. The water surface of a swimming pool suggest a plane
15. A beam of light from a laser suggests a ray
16. A fence pole suggests a segment
Please find attached the drawing for the figures in questions 17, 18, 19, and 20
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Caleb's vegetable garden yielded 48 pounds of bell
peppers. He gave of the yield to his neighbor, Jacob.
Caleb Sold to a local restaurant He saved the rest of
the bell peppers. How many pounds of bell peppers did
he give Jacob? How many pounds did he sell? How
many pounds did he save for himself?
Answer:
16 each
Step-by-step explanation:
Since you didn't say how much of the yield Jacob gave to the restaurant or the neighbor, I'm going to assume he kept an even share and gave them each the same share.
Assuming that, we would have to divide his harvest by 3
48/3 = 16
this means that 16 went to his neighbor, 16 to the restaurant and 16 were saved for himself.
Hope this helps! ^^
If a 3ft stick in the ground cast a shadow of 1. 2ft what is the height of a tree that cast a shadow that is 14. 16
Answer: The height of the tree is 35.4 ft.
Step-by-step explanation:
14.16/1.2 = 11.8
3 * 11.8 = 35.4
A fish swims 27 feet below sea level
Based on the information above, it can be inferred that the diver is at a depth of 36 ft below water level.
What is the final elevation of the diver?To calculate the final elevation of the diver we must take into account the depth at which he was at the beginning and the changes he made in his position.
Start point: 52 feet below water level.Modifications: Ascended 16 feet.To calculate his current position we must subtract the number of feet he ascended from the number of feet he was at at the beginning:
52ft - 16ft = 36ftBased on the above, it can be inferred that when the diver ascended to see a school of fish, he was 36 ft below the surface of the water.
Note: This question is incomplete because there is some information missing. Here is the complete information:
A scuba diver is swimming at an elevation of 52 feet below sea level. She sees a school of fish and rises 16 feet to watch the fish. What is her elevation now? A fish swims 27 feet below.
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What is the classification for this polynomial? 6x³y³z³ + x^4y^7
A. monomial
B. binomial
C. Trinomial
Those methods involving the collection, presentation, and characterization of a set of data in order to properly describe the various features of that set of data are called?
Those methods involving the collection, presentation, and characterization of a set of data in order to properly describe the various features of that set of data are called descriptive statistics.
Descriptive statistics:- Descriptive statistics helps to describe, summarize and organize the set of data efficiently and in an informative way, so that it'll be easier to make conclusion about the data in order to make rational decisions. This method describes the characteristics of a dataset.
Example:- The average test score for the students of a particular class, gives descriptive sense of the typical scores.
There are three types of descriptive statistics-
Univariate statistics:- It summarizes only one variable at a time.Bivariate statistics:- It compares between two variables.Multivariate statistics:- It compares between more than two variables.Thus we can conclude that, those methods involving the collection, presentation, and characterization of a set of data in order to properly describe the various features of that set of data are called descriptive statistics.
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Lucy rolls 2 fair dice and adds the results from each.
Work out the probability of getting a total of 10.
Answer:
Step-by-step explanation:
Discussion
The numbers on each die are 1 to 6.
They are all equally likely to turn up. There are 36 possibilities in all 6*6
So getting a 10 can be done in 3 ways.
6 + 4 = 10
4 + 6 = 10
5 + 5 = 10
You can't get 10 any other way.
So of the 36 ways of throwing 2 dice, only 3 will work.
Answer
P(10)= 3/36 = 1/12 = 0.0833333...
