The probability that a ball picked at random is blue or green is equal to 0.619 to the nearest thousandth.
What is probability?The probability of an event occurring is the fraction of the number of required outcome divided by the total number of possible outcomes.
The total possible outcome = 8 + 7 + 6 = 21
probability of picking a blue ball = 7/21
probability of picking a green ball = 6/21
probability of picking a blue or green ball = 7/21 + 6/21
probability of picking a blue or green ball = (7 + 6)/21
probability of picking a blue or green ball = 13/21
probability of picking a blue or green ball = 0.6190
Therefore, the probability that a ball picked at random is blue or green is equal to 0.619 to the nearest thousandth.
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Evaluate cos^2θ for cosθ = sqrt3/2
The value of cos(2θ) is 1/2
What is trigonometric identity?Trigonometric Identities are the equalities that involve trigonometry functions and holds true for all the values of variables given in the equation.
If cos(tetha) = √3/2
this means the adjascent is √ 3 and the hypotenuse is 2
therefore ;
opp = √ 2²- √3)²
= √4-3
= √1
= 1
therefore sin(tetha) = 1/2
cos(2θ) = cos²(tetha) -sin²(tetha)
cos²(tetha) = (√3/2)² = 3/4
sin²(tetha) =( 1/2)² = 1/4
cos(2θ) = 3/4 - 1/4 = 2/4 = 1/2
therefore the value of cos(2θ) is 1/2
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PLEASE HELPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPP
Answer:
it's the first one. I
n my thinking
Suppose we roll a red die and a green die. Let A be the event that the number of spots showing on the red die is three or less and B be the event that the number of spots showing on the green die is more than three. The events A and B are
Both events A and B have probabilities of 1/12, and they are independent events since the outcome on one die does not affect the outcome on the other die.
The event A consists of all outcomes in which the number of spots showing on the red die is three or less.
Since the red die has six equally likely outcomes (1, 2, 3, 4, 5, and 6), the probability of A is:
P(A) = the number of outcomes in A / the total number of possible outcomes.
Out of the six possible outcomes on the red die, three of them are three or less: 1, 2, and 3.
Therefore, the number of outcomes in A is three.
Since there are six equally likely outcomes for the green die as well, the total number of possible outcomes is 6 x 6 = 36.
Therefore, we have:
P(A) = 3/36 = 1/12.
The event B consists of all outcomes in which the number of spots showing on the green die is more than three.
There are also three outcomes on the green die that satisfy this condition: 4, 5, and 6.
Thus, we have:
P(B) = 3/36 = 1/12.
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For log normally distributed returns, the annual geometric average return is greater than the arithmetic average return. (True or False)
Given statement: For log normally distributed returns, the annual geometric average return is always greater than the arithmetic average return.
The given statement is true.
This is because log normal distribution assumes that the rate of return is compounded continuously, which leads to a higher final value of the investment.
For lognormally distributed returns, the geometric average return is greater than the arithmetic average return.
This is because the lognormal distribution has a positive skew, meaning that there are more small positive returns and fewer large negative returns.
This leads to compounding effects over time, which favor the geometric average return.
The geometric average return is calculated by taking the nth root of the product of (1+Ri),
where Ri is the return for the ith period.
The arithmetic average return is calculated by taking the average of the returns over a period.
Therefore, for lognormally distributed returns, the geometric average return is greater than the arithmetic average return.
The geometric average return takes into account the compounding effect, whereas the arithmetic average return does not.
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how many different license plates consist of five symbols either digits or letters
There are 60,466,176 different license plates that consist of five symbols, either digits or letters.
To calculate the number of different license plates consisting of five symbols, we need to consider the number of choices for each symbol, which can be either digits (0-9) or letters (A-Z).
Determine the number of choices for each symbol.
There are 10 digits (0-9) and 26 letters (A-Z), so there are a total of 10 + 26 = 36 possible choices for each symbol.
Use the counting principle.
Since there are 5 symbols on the license plate and 36 choices for each symbol, we can use the counting principle to determine the number of different license plates.
The counting principle states that if there are n ways to do one thing and m ways to do another, then there are n x m ways to do both.
Calculate the number of different license plates.
The number of different license plates can be calculated as 36 × 36 × 36 × 36 × 36 = [tex]36^5[/tex] = 60,466,176.
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There are a total of 60,466,176 different license plates consisting of five symbols, either digits or letters. This is because there are 26 letters in the English alphabet and 10 digits, so the total number of symbols is 36.
To calculate the number of different license plates consisting of five symbols, we need to consider that each symbol can be either a digit (0-9) or a letter (A-Z). There are 10 digits and 26 letters, so there are 36 possible choices for each symbol.
To find the total number of different license plates, we use the following steps:
1. Determine the number of possible choices for each symbol (36, as explained above).
2. Since there are five symbols in the license plate, raise the number of choices (36) to the power of 5.
3. Calculate the result.
So, the calculation would be:
36^5 = 60,466,176
There are 60,466,176 different license plates that can be created using five symbols with either digits or letters.
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Use the form |x – b| < c or |x – b| > c to write an absolute value inequality that has the solution set x= < –9 or x>=-5.
Answer: |x + 9| > 0 or |x + 5| < 4
Step-by-step explanation: To begin with, ready to utilize the frame |x - b| > c to speak to the arrangement x < -9:
|x - (-9)| >
Rearranging this gives:
|x + 9| >
Another, we are able utilize the frame |x - b| < c to speak to the arrangement x ≥ -5. Ready to select a esteem of c that's more noteworthy than the remove from -5 to the closest endpoint of the arrangement set (which is -9):
|x - (-5)| < 4
Rearranging this gives:
|x + 5| < 4
Joining these two supreme esteem disparities with an "or" explanation gives:
|x + 9| > or |x + 5| < 4
Rearranging this gives:
x < -9 or -9 < x < -1
We will see that the primary portion of the arrangement set (x < -9) is as of now spoken to within the to begin with supreme esteem imbalance, and the moment portion (x ≥ -5) is spoken to by the moment supreme esteem imbalance.
Convert the following percents to decimals.
150% =
Answer:
1.5
Step-by-step explanation:
Move the decimal point two places to the left to go from a percentage to a decimal.
7. Julie had a balance of $1,189.17 in her checking account. She wrote checks for $62.41, $224.14, $12.92, and $357.16. Her deposits were $197.34 and $879.13. What was Julie's new bank balance?
According to the given information, Julie's new bank balance was $1,609.01
To calculate Julie's new bank balance, we need to subtract the total amount of checks she wrote from her initial balance, and then add the total amount of deposits she made.
Total amount of checks = $62.41 + $224.14 + $12.92 + $357.16 = $656.63
Total amount of deposits = $197.34 + $879.13 = $1,076.47
New bank balance = Initial balance - Total amount of checks + Total amount of deposits
New bank balance = $1,189.17 - $656.63 + $1,076.47
New bank balance = $1,609.01
Therefore, Julie's new bank balance was $1,609.01.
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ankara güçlendiren 8.sınıf kurumsal deneme 3 cevap anahtarı ank-2303
Answer:
I found a video that provides the answer key for the Ankara Güçlendiren
Step-by-step explanation:
Solve 2x^2+x-3=0 by factoring.
Answer:
To solve the quadratic equation 2x^2 + x - 3 = 0 by factoring, we follow these steps:
Step 1: Write the equation in standard quadratic form, which is ax^2 + bx + c = 0. In this case, the equation is already in standard form: 2x^2 + x - 3 = 0.
Step 2: Factor the quadratic expression on the left-hand side of the equation. We look for two numbers that multiply to give us the constant term (c) and add to give us the coefficient of the linear term (b). In this case, c = -3 and b = 1.
The two numbers that satisfy these conditions are -3 and 1, as -3 * 1 = -3 and -3 + 1 = -2.
Step 3: Use the factored form to set each factor equal to zero and solve for x.
2x^2 + x - 3 = 0
(2x - 3)(x + 1) = 0 (factored form)
Setting each factor equal to zero:
2x - 3 = 0
2x = 3
x = 3/2
x + 1 = 0
x = -1
So the solutions to the equation are x = 3/2 and x = -1.
Solve graphically the system of linear equations:
x+2y=4
−2x+5y=10
The required, graph of both lines has been shown where the common solution is (0, 2).
I apologize for the error in my previous solution. Here's the corrected solution:
To solve the system of linear equations x + 2y = 4 and -2x + 5y = 10 graphically, we need to plot the graphs of the two equations on the same set of axes and find the point where they intersect.
The graph of both lines has been shown where the common solution is (0, 2).
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Need help please and thank you
Answer:
y=2/3x-6 1/3
Step-by-step explanation:
y+1=2/3(x-8)
first do the distributive property.
2/3*x=2/3x
2/3*-8= -5 1/3
2/3x-5 1/3
then we subtract 1 from both sides
y=2/3x-6 1/3
On a map, the distance between two cities is 3.5 inches. The key to the map shows that 1 inch = 7 miles. What is the actual distance between the cities?
Find the equation of the line that is perpendicular to the line AB and passes through the point. (0,2)
The equation of a line perpendicular to line AB and passing through point (0,2) is y = -4x + 2.
The given line has a slope of 1/4, so the slope of any line perpendicular to it will be -4 (the negative reciprocal).
Using the point-slope form of a line, we can write the equation of the line passing through the point (0,2) with slope -4 as
y - 2 = -4(x - 0)
Simplifying, we get
y - 2 = -4x
Adding 2 to both sides, we get
y = -4x + 2
Therefore, the equation of the line passing through the point (0,2) which is perpendicular to the line y=1/4x+5 is y = -4x + 2.
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missing number in this sequence 512;128;?;8;2
Answer:
32
Step-by-step explanation:
512 / 4 = 128
128 / 4 = 32
32 / 4 = 8
8 / 4 = 2
will give brainliest to first answer
space 1 options:
-maximum
-minimum
space 2 options:
0
-2
6
1
space 3 options:
0
-2
6
1
Thus, the function has a minimum value of -2 at x = -1.
Explain about the maxima and minima of function:There are "hills and valleys" in functions, or points where their value reaches a minimum or maximum.
Locally, it may not be the lowest or maximum for the entire function.
An "Absolute" meaning "Global" maximum as well as minimum is the value at which the function has reached its maximum or minimum.There can be more than a local maximum or minimum, but there is only single global maximum (one and global minimum).Stated function:
g(x) = 2x² + 4x
Differentiate the function to find the critical points with respect to x.
g'(x) = 4x + 4 ...eq 1
Put g'(x) = 0
4x + 4 = 0
4(x + 1) = 0
x = - 1 (critical point)
Again Differentiate the function to check for maxima or minima:
g'(x) = 4x + 4
g''(x) = 4
g''(x) > 0 (minimum function)
At x = -1 , the function will be minimum.
Minimum value : Put x = -1 in function.
g(x) = 2(-1)² + 4(-1)
g(x) = 2 - 4
g(x) = -2
Thus, the function has a minimum value of -2 at x = -1.
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Which of the following points is shown in the graph below?
A.(-1,5,3)
B.(1,-5,3)
C.(1,5,3)
D.(1,5,-3)
Answer:
b
Step-by-step explanation:
The circle with center F is divided into sectors. In circle F, EB is a diameter. The radius
of circle F is 4 units.
What is the length of the arc corresponding to the subtended central angle ∠EFD?
The answer of the given question based on the circle is , the answer is option (d) 8/3π.
What is Arc?In geometry, an arc is portion of circumference of a circle. It is curved line that connects two points on circle. The length of arc is proportional to the angle that it subtends at the center of the circle.
Since EFB is a straight line and EB is a diameter of the circle, angle EFB subtends the entire circle at F. Therefore, the angle subtended by arc EFD is the difference between the angles subtended by arcs EF and EB.
Arc EF subtends a full circle at F, so its angle is 2π radians. Arc EB subtends a straight angle at F, so its angle is π radians.
Therefore, the angle subtended by arc EFD is:
2π - π = π
The length of arc is given by formula L = rθ, where r is radius of circle and θ is angle (in radians) subtended by arc at center of circle.
In this case, r = 4 and θ = π, so the length of the arc corresponding to angle EFD is:
L = rθ = 4π
Therefore, the answer is (d) 8/3π.
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PLEASE HELP! SHOW WORK AND EXPLAIN ON HOW YOU GOT THE ANSWER! I WILL MARK YOU BRAINLIEST IF YOU DO!
The value of the surd form √14 is 3. 74
What is square root?The square root of a number is a value that, when multiplied by itself, equals the original number.
It is represented by the symbol √ and is a way to find the side length of a square given its area or the length of a diagonal in a right triangle.
From the information given, we have that;
The expression is √14
We can see that the value √14 is a surd which can no longer be simplified into a whole or rational number.
To determine the square root, we use the calculator
√14
3. 7416
In the nearest tenth, we get;
3. 74
Hence, the value is 3. 74
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Quadrilateral ABCD is inscribed in this circle.
What is the measure of angle C?
The measure of angle C is 80°
What is a cyclic quadrilateral?A cyclic quadrilateral is a quadrilateral which has all its four vertices lying on a circle. It can also be called inscribed quadrilateral.
A theorem if circle geometry states that the opposite angles of a cyclic quadrilateral are supplementary. This means the sum of. opposite angles of a cyclic quadrilateral is 180°
Therefore 3x-59+2x-1 = 180
5x -60 = 180
5x = 180+60
5x = 240
x = 240/5
x = 48
angle A = 2x+4 = 2×48+4
= 100°
therefore angle C = 180-(angle A)
C = 180-100
= 80°
therefore the measure of angle C is 80°
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Find the volume 17.3 10.4
The volume of the given cone with a height of 17.3 and a diameter of 10.4 is 489.87 cubic cm
The volume of any cone can easily be determined by the formula (pi*r*r)*(h/3) where pi has the value of 3.14, 'r' is the radius of the cone, and 'h' is the given height of the cone.
Here in the given question, we can see that the height(h) given here is 17.3cm and the diameter is 10.4cm with which we can find the radius because we know the radius is the half of diameter so 'r' will be 5.2cm.
Now just putting the values of 'h' and 'r' in the given formula (pi*r*r)*(h/3) we get the volume of the cone which is 489.87 cubic cm.
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Answer:
Step-by-step explanation:
here,
height h= 17.3cm
diameter= 10.4cm
therefore, radius r will be 5.2cm
pi= 3.14
solution:
volume v of cone= 1/3*pi*r2*h
= 1/3*3.14*5.2*5.2*17.3 cm3
= 489.7 cm3
explanation:
here, it is given that the height is 17.3cm and the radius is 5.2cm. we know that the formula for finding the volume of a cone is 1/3*pi*r2*h.
The length of PR is 18. Find the length of ST.
Round your answer to the nearest tenth.
The length of ST obtained using Pythagorean Theorem is about 13.2 units
What is the Pythagorean Theorem?Pythagorean Theorem states that the square of the length of the hypotenuse side of a right triangle is the sum of the square of the other two legs of the triangle.
The length of the segment [tex]\overline{PR}[/tex] = 18
[tex]\overline{RS}[/tex] = [tex]\overline{SP}[/tex] = 16 (Radial length of the same circle)
Triangle ΔSRP is an isosceles triangle, therefore, ∠SRP ≅ ∠SPR
[tex]\overline{ST}[/tex] ≅ [tex]\overline{ST}[/tex] (Reflexive property of congruence)
Triangles ΔRST and ΔPST are congruent by the Hypotenuse Leg, HL rule of congruent triangles
Therefore; RT ≅ PT
RT + PT = 18
RT + RT = 18
2 × RT = 18
RT = 18/2 = 9
RT = 9
Therefore, ST, can be obtained using Pythagoras Theorem as follows;
ST = √(16² - 9²) = 5·√7 ≈ 13.2
The length of the side ST is about 13.2 units long
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a ladder leans against a wall so that its slope is 1.60. the top of the ladder is 8 vertical feet above the ground. what is the approximate horizontal distance from the base of the ladder to the wall? (assume that the positive direction points from the base of the ladder toward the wall.)
Answer: We can use the trigonometric function tangent to solve this problem. Let x be the horizontal distance from the base of the ladder to the wall. Then we have:
tan(1.60) = x / 8
Multiplying both sides by 8, we get:
x = 8 tan(1.60)
Using a calculator, we find:
x ≈ 8 × 1.518 = 12.14
Therefore, the approximate horizontal distance from the base of the ladder to the wall is 12.14 feet.
Step-by-step explanation:
Dane is using two differently sized water pumps to clean up flooded water. The larger pump can remove the water alone in 240 min240min240, start text, m, i, n, end text. The smaller pump can remove the water alone in 400 min400min400, start text, m, i, n, end text. How long would it take the pumps to remove the water working together?
It would take the two pumps working together approximately 240 minutes to remove the water.
To determine how long it would take the two pumps to remove the water working together, we can use the concept of work rates. Specifically, we can determine the work rates of each pump and then add them together to find the combined work rate when both pumps are working together.
Let's start by defining some variables:
Let L be the rate of the larger pump, in units of water volume per minute.
Let S be the rate of the smaller pump, in the same units as L.
Let T be the time it takes for both pumps to remove the water working together, in minutes.
From the problem statement, we know that the larger pump can remove all the water alone in 240 minutes. This means that its work rate is 1/240, since it can remove 1 unit of water volume in 240 minutes. Similarly, the smaller pump has a work rate of 1/400.
When both pumps are working together, their work rates add up. Therefore, we can set up an equation as follows:
L + S = 1/T
Substituting the work rates we found earlier, we get:
1/240 + 1/400 = 1/T
Simplifying this equation, we get:
1/T = 0.0041667
Solving for T, we get:
T = 1/0.0041667 ≈ 240.001 minutes
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According to the Democratic Presidential candidates, 51% of young Americans support tuition-free college. Suppose a random sample of 30 UConn students is selected. What is the probability that at least 10 of them support tuition-free college
The probability that at least 10 of them support tuition-free college is 0.9838.
To answer this question, we will use the binomial distribution formula. Let p = 0.51 be the proportion of young Americans who support tuition-free college, and let n = 30 be the sample size.
The probability of at least 10 UConn students supporting tuition-free college is equal to the sum of the probabilities of 10 or more, 11 or more, 12 or more, ..., up to 30. We can use the normal approximation to the binomial distribution.
Using the normal approximation, we first calculate the mean and standard deviation of the binomial distribution:
mean = np = 30 * 0.51 = 15.3
standard deviation = sqrt(np(1-p)) = sqrt(30 * 0.51 * 0.49) = 2.46
We then standardize the variable X = number of UConn students who support tuition-free college:
Z = (X - mean) / standard deviation
Now we want to find the probability that X is greater than or equal to 10, which is equivalent to finding the probability that Z is greater than or equal to (10 - 15.3) / 2.46 = -2.14.
Using a standard normal table or calculator, we find that the probability of Z being greater than or equal to -2.14 is approximately 0.9838. Therefore, the probability of at least 10 UConn students supporting tuition-free college is approximately 0.9838.
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The cost of 1 hat and 1 bag is £27.
The cost of 2 hats and 1 bag is £42.
(a) How much does 1 hat cost?
(b) How much does 1 bag cost?
Answer:
(a) 1 hat is $15
(b) 1 bag is $12
Step-by-step explanation:
1 hat at $15 + 1 bag at $12 is equal to $27
2 hats at $30 together + 1 bag at $12 is equal to $42
the graph of p(x)=2(x-4) is translated 2 units right and down 1 unit. What is the equation of the translated function q(x) in slope intercept form
The equation of the translated function q(x) in slope-intercept form is q(x) = 2x - 13.
What is the equation of the translated function q(x)The function p(x) = 2(x - 4) can be rewritten in slope-intercept form as:
p(x) = 2x - 8
To translate the graph of p(x) two units to the right and one unit down, we need to make the following adjustments to the equation:
To shift the graph two units to the right, we need to replace x with (x - 2).To shift the graph one unit down, we need to subtract 1 from the entire equation.So the equation of the translated function q(x) in slope-intercept form is:
q(x) = 2(x - 2) - 8 - 1
Simplifying, we get:
q(x) = 2x - 13
Therefore, the equation of the translated function q(x) in slope-intercept form is q(x) = 2x - 13.
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a pair of fair dice is tossed. define the following events: a: 5you will roll a 7 1i.e., the sum of the numbers of dots on the upper faces of the two dice is equal to 7).6 b: 5at least one of the two dice is showing a 4.6 a. identify the sample points in the events a, b, a b, a b, and ac . b. find p1a2, p1b2, p1a b2, p1a b2, and p1ac 2 and by summing the probabilities of the appropriate sample points. c. use the additive rule to find p1a b2 . compare your answer with that for the same event in part b. d. are a and b mutually exclusive? why?
The sample points of events A, B, A ∩ B, A ∪ B and A' (complement of A) are given. The probability of event are 1/18, 11/36, 1/18, 7/18 and 17/18 respectively. The probability using additive rule of p(A ∩ B) is 1/36. Events A and B are not mutually exclusive as they have a non-empty intersection.
Sample points in the events
A: {(1, 6), (2, 5), (3, 4), (4, 3), (5, 2), (6, 1)}
B: {(4, 1), (4, 2), (4, 3), (4, 4), (4, 5), (4, 6), (1, 4), (2, 4), (3, 4), (5, 4), (6, 4)}
A ∩ B: {(4, 3), (3, 4)}
A ∪ B: {(1, 4), (1, 6), (2, 4), (2, 5), (3, 4), (4, 1), (4, 2), (4, 3), (4, 4), (4, 5), (4, 6), (5, 2), (5, 4), (6, 1), (6, 4)}
A' (complement of A): {(1, 1), (1, 2), (1, 3), (2, 1), (2, 2), (2, 3), (3, 1), (3, 2), (3, 3), (5, 1), (5, 3), (5, 5), (6, 2), (6, 3), (6, 5), (1, 5), (1, 6), (2, 6), (3, 5), (3, 6), (5, 6), (6, 6)}
The probability of event A is
p(A) = 2/36 = 1/18.
The probability of event B is
p(B) = 11/36.
The probability of event
A ∩ B (i.e., A and B) is p(A ∩ B) = 2/36 = 1/18.
The probability of event
A ∪ B (i.e., A or B) is p(A ∪ B) = 14/36 = 7/18.
The probability of event A' (i.e., not A) is p(A') = 17/18.
By the additive rule, we have p(A ∪ B) = p(A) + p(B) - p(A ∩ B). Therefore, p(A ∩ B) = p(A) + p(B) - p(A ∪ B) = (1/18) + (11/36) - (7/18) = 1/36. This inconsistent with the answer we obtained in above part.
The events A and B are not mutually exclusive because it is possible to roll a 4 and a 3 at the same time, which satisfies both events.
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(a) Three squares have the areas of 7 cm², 17 cm² and 10 cm², (i) Will the squares exactly surround a right angled triangle? (ii) Explain your answer.
Answer:
(i) This equation is not true, which means that the three squares cannot exactly surround a right-angled triangle.
(ii) It is not always possible for three squares to surround a right-angled triangle. One way to see this is to note that the side lengths of a right-angled triangle satisfy the Pythagorean theorem, which means that they must be in a certain relationship to each other. On the other hand, the areas of three squares can take any values, so it is not always possible to find three squares whose side lengths satisfy the Pythagorean theorem.
Step-by-step explanation:
To determine whether the three squares can exactly surround a right-angled triangle, we need to use the Pythagorean theorem, which states that in a right-angled triangle, the square of the length of the hypotenuse (the longest side) is equal to the sum of the squares of the lengths of the other two sides.
Let's assume that the three squares have side lengths a, b, and c, with areas of 7 cm², 17 cm², and 10 cm², respectively. Then, we have:
a² = 7 cm²
b² = 17 cm²
c² = 10 cm²
We need to find out whether there exist values of a, b, and c that satisfy the Pythagorean theorem. If such values exist, then the three squares can surround a right-angled triangle.
We can rearrange the equations above to solve for a, b, and c:
a = √7 cm ≈ 2.65 cm
b = √17 cm ≈ 4.12 cm
c = √10 cm ≈ 3.16 cm
Now, we can check whether the Pythagorean theorem holds:
c² = a² + b²
(√10 cm)² = (√7 cm)² + (√17 cm)²
10 cm = 7 cm + 17 cm
This equation is not true, which means that the three squares cannot exactly surround a right-angled triangle.
In general, it is not always possible for three squares to surround a right-angled triangle. One way to see this is to note that the side lengths of a right-angled triangle satisfy the Pythagorean theorem, which means that they must be in a certain relationship to each other. On the other hand, the areas of three squares can take any values, so it is not always possible to find three squares whose side lengths satisfy the Pythagorean theorem.
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