A system of equations is graphed on a coordinate plane.



Which coordinates are the best estimate of the solution to the system of equations?
Responses

(6, 0)
begin ordered pair 6 comma 0 end ordered pair

(0, 5)
begin ordered pair 0 comma 5 end ordered pair

(1, 4)
begin ordered pair 1 comma 4 end ordered pair

Answer:

54 et 60 sont les multiples de 6 entre 50 et 70

A critical value, z subscript alpha (zα), denotes the boundary or cutoff point for a statistical test where the level of significance, also known as alpha (α), is set.

A critical value, z subscript alpha (zα), denotes the value at which the probability of observing a test statistic in the tail(s) of the sampling distribution equals the pre-determined significance level (alpha).

The critical value can be defined as the value that is compared with the parameter value in the hypothesis test to determine whether the null hypothesis will be rejected. If the value of the parameter is less than the critical value, the null hypothesis is rejected.

However, if the measured value is higher than the critical value, reject the null hypothesis and accept the alternative hypothesis. In other words, cropping divides the image into acceptable and unacceptable areas. If the value of the index falls within the rejection range, the rejection of the fact is rejected, otherwise the negative hypothesis is rejected.

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To calculate the price that the sofa must sell for, we need to first determine the total sales amount that the salesperson needs to make in order to earn a commission of at least $50. We can do this by dividing $50 by the commission rate of 6.25%, which gives us a total sales amount of $800.

Next, we can use this total sales amount to find the price of the sofa that would generate this much commission for the salesperson. Let's say that the price of the sofa is x. We can set up an equation as follows:

x * 0.0625 = $800

To solve for x, we divide both sides by 0.0625:

x = $12,800

Therefore, the sofa must sell for at least $12,800 in order for the salesperson to earn a commission of at least $50. It's important to note that this calculation assumes that the salesperson only sells one sofa. If they sell multiple pieces of furniture, their total commission earnings would be higher.
Hi! To calculate the minimum price the sofa must be sold for to earn a commission of at least $50, follow these steps:

1. Identify the commission rate: 6.25%
2. Convert the commission rate to a decimal: 0.0625
3. Determine the desired commission amount: $50
4. Divide the desired commission amount by the commission rate (decimal form): $50 / 0.0625

After performing the calculation, you will find that the minimum price the sofa must be sold for is $800. This means that the salesperson must sell the sofa for at least $800 to earn a commission of $50 or more.

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Answer:

30

Step-by-step explanation:

4 squares = 14 cm

1 square = 14÷4 = 3.5 cm.

Radius = 3.5 cm

Length of 2 small arcs = 90/360 × 2 pi R = 1/4 × 2 × 3.14 × 3.5 = 5.495 cm (here R is one square)

Length of 2 big arcs = 90/360 × 2 pi R = 1/4 × 2 × 3.14 × 7 = 10.99 cm (here R is two squares)

Length of 4 lines = 4 × 3.5 = 14 cm

Perimeter = total length = 14 + 10.99 + 5.495 = 30.485 = 30 cm (nearest cm)

The greatest possible whole-number length of the unknown side is 13 inches.

To determine the greatest possible length of the unknown side, we need to use the triangle inequality theorem, which states that the sum of the lengths of any two sides of a triangle must be greater than the length of the third side.

In this case, we have two sides with known lengths of 8 inches and 9 inches. To find the greatest possible length of the unknown side, we need to add these two lengths together and then subtract 1 inch (since the third side must be less than the sum of the other two).

So, the greatest possible length of the unknown side is 8 + 9 - 1 = 16 inches. However, since we are looking for the greatest possible whole-number length, we must round down to the nearest whole number, which is 13 inches. Therefore, the answer is 13 inches.

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The given differential equation is of the form dy/dx = x^(9/2 + 1). To solve this, we can integrate both sides with respect to x to obtain the general solution:

y = (2/11)x^(11/2) + C

where C is a constant of integration.

Using the initial condition y(1) = 3, we can solve for C:

3 = (2/11)1^(11/2) + C

C = 3 - 2/11

Substituting this value of C in the general solution, we obtain the particular solution:

y = (2/11)x^(11/2) + 3 - 2/11

y = (2/11)x^(11/2) + 31/11

However, none of the given answer choices match this form exactly. Answer choice A can be simplified to:

y = (2/3)(x^(9/2 + 1))^(3/2) + 7/3

y = (2/3)(x^11)^(3/2) + 7/3

y = (2/3)x^(33/2) + 7/3

This is not equivalent to the given particular solution. Answer choice B can be simplified to:

y = (2/27)x^8(x^(9/2 + 1))^(3/2) + (81 - 4sqrt(2))/27

y = (2/27)x^8(x^11)^(3/2) + (81 - 4sqrt(2))/27

y = (2/27)x^8x^(33/2) + (81 - 4sqrt(2))/27

y = (2/27)x^(49/2) + (81 - 4sqrt(2))/27

This is also not equivalent to the given particular solution. Answer choice C is an integral that does not evaluate to the given particular solution. Answer choice D is similar to the given general solution, but the lower limit of integration should be 1 instead of 0.

Therefore, none of the given answer choices are correct. The particular solution to the given differential equation with initial condition y(1) = 3 is:

y = (2/11)x^(11/2) + 31/11.

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The numbers that do not form a fact family are solved

Given data ,

A fact family consists of a set of related addition and subtraction facts that use the same numbers. For example, the numbers 3, 5, and 8 form a fact family because:

3 + 5 = 8

5 + 3 = 8

8 - 5 = 3

8 - 3 = 5

Numbers that do not form a fact family are any set of numbers that do not follow this pattern. For example, the numbers 2, 4, and 7 do not form a fact family because no combination of addition and subtraction using these numbers produces the other two numbers.

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The given expressions are a+12, 7+a, a+7, & 5a.

The given values 1, 3 & 4 are substituted in the given expressions as follows

For value 1 the expressions will be given as follows

1+12=13, 7+1=8, 1+7=8 & 5*1=5

For value 3 the expressions will be given as follows

3+12=15, 7+3=10,3+7=10 & 5*3=15

For value 4 the expressions will be given as follows

4+12=16, 7+4=11,4+7=11 & 5*4=20

From the obtained results above it is clear that expressions a+7 & 7+a are equal for all possible values as the result obtained from them is same irrespective of the value substituted.

Similarly, the expressions a+12 & 5a are equivalent for a = 3 as the result obtained is same on substituting a=3 but it is not true for all other values.

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The vertex of the parabola is (2, -1)

The given function is y + 1 = -1/4 (x - 2)²

Vertex form of a parabola is; y = a(x - h)² + k

To the given formula in vertex form, subtract 1 from each side. The equation for the parabola is:

y = -1/4 (x - 2)² - 1

From this, we can take out (h, k), the vertex, and that it is at (2, -1).

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The term "income" refers to the money that an individual earns or receives in exchange for their work or services.

In this case, the panhandler is making $15 to $20 per day on the streets, which can be considered his income. The terms "prestige," "status," and "wealth" are not relevant in this context.
                                             A panhandler who makes $15 to $20 per day on the streets and you want to know whether this is his A) wealth, B) income, C) status, or D) prestige.

The answer is B) income. The money a panhandler makes per day can be considered his daily income.

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The cosine function is continuous everywhere, we can evaluate this limit by plugging in theta = 0, which gives:
lim theta→0+ 1/cos theta
= 1/cos 0 = 1/1 =1

The secant function is defined as the reciprocal of the cosine function, which means that sec theta = 1/cos theta. This function is periodic with period 2π, and it has vertical asymptotes at odd multiples of π/2.

To evaluate the limit lim 0 pi/2 sec theta, we can use the fact that the secant function is the reciprocal of the cosine function. Thus, we have:
lim theta→0+ sec theta
= lim theta→0+ 1/cos theta
Since the cosine function is continuous everywhere, we can evaluate this limit by plugging in theta = 0, which gives:
lim theta→0+ 1/cos theta
= 1/cos 0
= 1/1
= 1
Therefore, the limit of sec theta as theta approaches 0 from the right is 1. Note that we had to specify the direction from which theta approaches 0 because the limit is undefined if we approach 0 from the left.
In conclusion, the answer to the question "evaluate the following limit lim 0 pi/2 sec theta" is 1. so to meet the requirement of  we can elaborate on the properties of the secant function and its relation to the cosine function. The secant function is defined as the reciprocal of the cosine function, which means that sec theta = 1/cos theta. This function is periodic with period 2π, and it has vertical asymptotes at odd multiples of π/2. The behavior of the secant function near these asymptotes is similar to the behavior of the tangent function near its asymptotes, as both functions blow up to infinity.
The reciprocal relationship between the secant and cosine functions is important in trigonometry because it allows us to express any trigonometric function in terms of sine and cosine. For example, we can express the tangent function as tan theta = sin theta/cos theta = sec theta/sin theta. This relationship is also useful in calculus because it allows us to use the trigonometric identities to simplify integrals and derivatives.

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Answer:

5th term is 25/2

6th term is -25/(2^2) = -25/4

7th term is 25/(2^3) = 25/8

8th term is -25/(2^4) = -25/16

9th term is 25/(2^5) = 25/32

So the 15th term is 25/(2^11) = 25/2,048

Let's denote the number of sides of the regular polygon as "n".

The number of diagonals in any polygon can be calculated using the formula:

Number of diagonals = (n * (n - 3)) / 2

According to the given information, the number of diagonals is equal to four times the number of sides:

(n * (n - 3)) / 2 = 4n

To solve this equation for "n," we can start by simplifying:

n * (n - 3) = 8n

Expanding the equation:

n^2 - 3n = 8n

Rearranging terms:

n^2 - 11n = 0

Factoring out "n":

n(n - 11) = 0

Setting each factor equal to zero:

n = 0 or n - 11 = 0

Since the number of sides cannot be zero, we discard the solution n = 0.

Therefore, the regular polygon has n = 11 sides.

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To calculate the probability that at least two people in a group of twelve have the same birthday, we can use the concept of complementary probability.

We will calculate the probability that all twelve people have different birthdays and then subtract that from 1 to get the probability of at least two people having the same birthday.

The probability that the first person has a unique birthday is 365/365 (since there are 365 possible days).

The probability that the second person has a different birthday from the first is 364/365 (since there are 364 remaining days).

Similarly, for each subsequent person, the probability of having a different birthday from all previous people is reduced by 1/365.

So, the probability that all twelve people have different birthdays is:

(365/365) * (364/365) * (363/365) * ... * (355/365)

To find the probability of at least two people having the same birthday, we subtract this value from 1:

P(at least two people have the same birthday) = 1 - [(365/365) * (364/365) * (363/365) * ... * (355/365)]

Using a calculator, we can evaluate this expression and find the probability:

P(at least two people have the same birthday) ≈ 0.891

The probability of at least two people in a group of twelve having the same birthday is approximately 0.891. This is obtained by calculating the complementary probability of all twelve people having different birthdays.

Using the concept of complementary probability, we subtract the probability of no shared birthdays from 1 to find the desired probability.

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The number of hot dogs did they sell is, 65

We have to given that;

The art club sold pizza for $5 a slice and hot dogs for $3 and made $500

Let us assume that,

Number of pizza = x

Number of hot dogs = y

Since, they sold 126 total items

Hence, We get;

x + y = 126  .. (i)

And, 5x + 3y = 500  .. (ii)

Now, We can simplify as;

From (i),

x = 126 - y

Substitute in (ii);

5 (126 - y) + 3y = 500

630 - 5y + 3y = 500

630 - 500 = 2y

130 = 2y

y = 65

Hence, The number of hot dogs did they sell is, 65

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The velocity with which the apple strikes the ground​ is 2 m/s.

In every case, we add the speed of the object (relative to the reference point) to the speed of the reference point (relative to the ground) to find the speed of the object relative to the ground. (We choose to use + to mean "up" or "forward".)

The hot air balloon is descending with a constant velocity of 3 ms. when somebody inside the balloon throws an apple downward with a velocity of 5 m.s¹ so the velocity with which the apple strikes the ground​

... (3m/s) + (-5m/s) = -2m/s

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You had $24.50 before your aunt gave you $50  to help buy the reflector telescope

If your aunt gave you $50 and you now have $25.50 left after buying the reflector telescope, then you spent:

$50 - $25.50

Fifty minus twenty five point five

We get twenty four point five

= $24.50

Therefore, you had $24.50 before your aunt gave you $50  to help buy the reflector telescope

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Under the null hypothesis of a uniform distribution, the expected number of times we would get 0 errors is b) 10. This means that if we were to conduct multiple trials, and under the assumption of a uniform distribution, we would expect to see 0 errors 10 times on average.

The null hypothesis assumes that there is no significant difference between the observed and expected values.

Under a uniform distribution, each possible outcome has an equal probability of occurring.

The expected number of times with 0 errors is calculated by multiplying the total number of trials by the probability of getting 0 errors.

We cannot calculate the exact value of the expected number of times with 0 errors without knowing the total number of trials and possible outcomes.

Logical reasoning can be used to eliminate answer options.

If the expected number of times with 0 errors is 10, we expect that the number of errors should be distributed across all possible outcomes relatively evenly.

Option a) 40 and d) 20 are too high, and option c) 30 is only slightly lower than 40.

The most reasonable option is b) 10, which implies a relatively even distribution of errors across all possible outcomes.

Therefore, under the null hypothesis of a uniform distribution, we would expect to see 0 errors 10 times on average if we conducted multiple trials.

This approach allows us to make inferences about a population based on sample data and statistical models.

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If a club has 9 men and 10 women, there are 10,920 different committees that can be formed which have 3 men and 3 women. This is calculated using the combination formula, which is nCr = n!/r!(n-r)!.

To find the number of different committees that can be formed with 3 men and 3 women, we can use the combination formula, which is nCr = n!/r!(n-r)!, where n is the total number of people and r is the number of people needed for the committee. In this case, n = 19 (9 men and 10 women) and r = 3 (3 men and 3 women).

Using the combination formula, we get:

nCr = 19C3 = 19!/3!(19-3)! = (19x18x17)/(3x2x1) = 969

However, this only gives us the number of committees that can be formed regardless of gender. Since we need 3 men and 3 women, we need to find the number of ways to choose 3 men from the 9 men and 3 women from the 10 women.

To find the number of ways to choose 3 men from the 9 men, we can use the combination formula again:

9C3 = 9!/3!(9-3)! = (9x8x7)/(3x2x1) = 84

Similarly, to find the number of ways to choose 3 women from the 10 women, we get:

10C3 = 10!/3!(10-3)! = (10x9x8)/(3x2x1) = 120

Therefore, the total number of different committees that can be formed with 3 men and 3 women is:

9C3 x 10C3 = 84 x 120 = 10,080

This is the final answer, which means there are 10,080 different committees that can be formed with 3 men and 3 women from a club that has 9 men and 10 women.

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Gus bought 12 gallons of gas at 2. 17 a gallon a bottle of oil for 2. 49. Gus received $13.04 in change.

To find out how much change Gus received, we need to add up the cost of everything he bought and the tax he paid, and then subtract that total from the $50 bill he paid with. The cost of 12 gallons of gas at $2.17 a gallon is $26.04. The cost of one bottle of oil for $2.49 and two jugs of anti-freeze for $7.98 is $18.45. Adding the cost of the items to the tax Gus paid, we get $19.97. Subtracting that amount from the $50 bill, we get $30.03 in change.

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The "v" shape of the concrete canal in Land Town is a smart design choice that helps to improve the efficiency and durability of the canal.

Canals are man-made waterways that are used for transportation, irrigation, drainage, and other purposes. The concrete canal in Land Town is shaped like a "v" at the bottom, which is a common design for canals. The "v" shape helps to improve the flow of water and reduce erosion. When water flows through a canal, it creates friction with the bottom and sides of the canal. This friction slows down the water and can cause erosion over time.

By shaping the bottom of the canal like a "v", the water can flow more smoothly and quickly, reducing friction and erosion. The "v" shape also helps to prevent debris from accumulating in the canal. Debris such as leaves, branches, and other debris can collect in the corners of a canal, obstructing the flow of water. With a "v" shape, the debris is more likely to be swept away by the flowing water.

In addition, the "v" shape can help to improve the capacity of the canal. By creating a deeper channel, more water can be transported through the canal, which can be especially important during times of heavy rainfall or flooding. Overall, the "v" shape of the concrete canal in Land Town is a smart design choice that helps to improve the efficiency and durability of the canal.

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The numbers that form a fact family are as follows:

The numbers that do not form a fact family are:

A fact family is a group of mathematical facts that relate the same set of numbers together. It is also known as a number family and often employs three numbers.

Fact families are typically depicted as triangles. The three numbers that make up the fact family are written in the three corners of the triangle close to the vertices.

An example of a fact family is 9, 7, 16

9 + 7 = 16

7 + 9 = 16

16 - 9 = 7

16 - 7 = 9

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The opportunity cost of leisure can be measured by calculating the cost of the next-best alternative that could have been pursued instead of leisure.

To measure the opportunity cost of leisure, follow these steps:

Step 1: Identify the alternatives to leisure time. These can include activities like working, studying, or doing household chores.

Step 2: Determine the value of these alternative activities. For example, if you choose to work instead of enjoying leisure time, the value can be the income you would earn during that time.

Step 3: Compare the values of the alternative activities to the value of leisure. The opportunity cost of leisure is the highest value among these alternatives that you give up by choosing leisure. For example, if someone decides to spend an hour watching TV instead of working on a freelance project that could earn them $50, the opportunity cost of leisure in this case would be $50.

In summary, the opportunity cost of leisure is the value of the best alternative activity you forgo when choosing to spend time on leisure activities.

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Hank spent $32. 76 on 4 books. If each book was the same price. Each book cost $8.19.

To determine the cost of each book, we need to divide the total cost of the 4 books by the number of books purchased:

Cost of each book = Total cost / Number of books

In this case, we know that Hank spent $32.76 on 4 books, so we can plug in these values to get:

Cost of each book = $32.76 / 4

Simplifying the right side of the equation, we get:

Cost of each book = $8.19

Therefore, each book cost $8.19.

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The length of YM in triangle XYZ, where XY = 8.3 cm and YZ = 11.9 cm, is approximately 2.77 cm.

To construct triangle XYZ with XY = 8.3 cm and YZ = 11.9 cm:

i. Start by drawing a line segment XY with a length of 8.3 cm.

ii. From point X, draw a line segment in the direction of YZ, measuring 11.9 cm. Label the endpoint as Z.

iii. Connect points Y and Z to complete the triangle XYZ.

To construct the midpoint M of XZ with angle YXZ = 60 degrees:

i. Draw a ray from point Y, forming an angle of 60 degrees with line segment YZ. Label the point where the ray intersects XY as M.

ii. Construct a line segment from point M perpendicular to line segment XY. This line segment will intersect line segment XZ at the midpoint M.

The length of YM can be calculated using the Pythagorean theorem.

If we let XZ = a, then XZ/2 = XM = MZ = a/2.

Using the angle YXZ = 60 degrees, we can write the length of YM as:

YM = [tex]\sqrt{(XM^2 + YX^2)} = \sqrt{((a/2)^2 + (8.3-a)^2)[/tex]

We can solve for a by setting the derivative of YM with respect to a to zero and solving for a, which yields a value of a = 4.85 cm.

Therefore, the length of YM is:

YM = [tex]\sqrt{((4.85/2)^2 + (8.3-4.85)^2)[/tex] = [tex]\sqrt{(7.686)[/tex] ≈ 2.77 cm.

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The general solution of the system of differential equations d/dt x = [-37 -56; 30 45] is:
x(t) = c1*[-4t; t]*e^(5t) + c2*[-7t; t]*e^(3t), where c1 and c2 are constants determined by the initial conditions.

To find the general solution of the system of differential equations d/dt x = [-37 -56; 30 45], we can first find the eigenvalues and eigenvectors of the matrix:

det([-37-lambda -56; 30 45-lambda]) = (-37-lambda)(45-lambda) - (-56)(30) = lambda^2 - 8lambda - 15 = (lambda-5)(lambda-3)

So the eigenvalues are lambda_1 = 5 and lambda_2 = 3.

To find the eigenvectors, we can solve for the nullspaces of the matrices A-lambda_1*I and A-lambda_2*I, where I is the identity matrix and A is the coefficient matrix:

For lambda_1 = 5, we have:

[-42 -56; 30 40] * [x1; x2] = [0; 0]

Solving this system of equations, we get x1 = -4x2. So any vector of the form [x1; x2] = [-4t; t] is an eigenvector corresponding to lambda_1 = 5.

For lambda_2 = 3, we have:

[-40 -56; 30 42] * [x1; x2] = [0; 0]

Solving this system of equations, we get x1 = -7x2. So any vector of the form [x1; x2] = [-7t; t] is an eigenvector corresponding to lambda_2 = 3.

Therefore, the general solution of the system of differential equations d/dt x = [-37 -56; 30 45] is:

x(t) = c1*[-4t; t]*e^(5t) + c2*[-7t; t]*e^(3t)
where c1 and c2 are constants determined by the initial conditions.

The correct question should be :

Find the general solution of the system of differential equations d/dt x = [-37 -56; 30 45].

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In summary, to find an interval of length 1 and having integer endpoints on which the function has a root, we can use a trial-and-error method to identify intervals that satisfy the given criteria. The choice of interval may depend on the specific function and there may be multiple intervals that satisfy these conditions.

To find an interval on which the function has a root, we need to consider the function's behavior and identify any potential zero crossings. An interval of length 1 with integer endpoints can be represented as [a, a+1] where a is an integer.
One approach to finding a root is to plot the function and visually identify where it crosses the x-axis. Another approach is to use algebra and solve for when the function equals zero. However, without knowing the specific function, we cannot use these methods.
Instead, we can use a trial-and-error method to identify an interval that satisfies the given criteria. For example, we can start by choosing an integer a and evaluating the function at a and a+1. If the function has opposite signs at these two endpoints, then by the Intermediate Value Theorem, the function must have at least one root in the interval [a, a+1].
We can continue this process until we find an interval that satisfies the given criteria. Note that there may be multiple intervals that satisfy these conditions, and the choice of interval may depend on the specific function.

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To find the length of \(PD\) in the given rectangle \(ABCD\), we can use the Pythagorean theorem.

The length of \(PD\) is [tex]\sqrt{} 79[/tex]units.

Given that \(PA = 1\), \(PB = 7\), and \(PC = 8\), we need to find \(PD\).

Since \(P\) is inside the rectangle, we can consider the right-angled triangles \(PAB\), \(PBC\), and \(PCD\).

Using the Pythagorean theorem, we have:

In triangle \(PAB\):

\(PA^2 + AB^2 = PB^2\)

In triangle \(PBC\):

\(PB^2 + BC^2 = PC^2\)

In triangle \(PCD\):

\(PC^2 + CD^2 = PD^2\)

Since the rectangle has equal side lengths, \(AB = BC = CD\), so we can denote them as \(s\).

Now let's substitute the given lengths:

\(1^2 + s^2 = 7^2\)     (Equation 1)

\(7^2 + s^2 = 8^2\)     (Equation 2)

\(8^2 + s^2 = PD^2\)    (Equation 3)

Simplifying Equations 1 and 2, we have:

\(s^2 = 7^2 - 1^2\)      (Equation 4)

\(s^2 = 8^2 - 7^2\)      (Equation 5)

Solving Equations 4 and 5:

\(s^2 = 48\)

\(s^2 = 15\)

From Equation 5, we find that \(s^2 = 15\), so \(s = \sqrt{15}\).

Substituting this value into Equation 3, we can solve for \(PD\):

\(8^2 + (\sqrt{15})^2 = PD^2\)

\(64 + 15 = PD^2\)

\(79 = PD^2\)

Taking the square root of both sides, we find:

\(PD = \sqrt{79}\)

Therefore, the length of \(PD\) is \(\sqrt{79}\) units.

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Answer:

Step-by-step explanation:

Let's divide the diagram in 2 regions, rectangular one and triangular one.

for region 1 we need to find the area of a rectangle :

region 1 : 102×66=6732 m^2

for region 2 we need to find the area of a triangle :

region 2: [tex]\frac{1}{2}[/tex]× 38×66=1254 m^2

and then we add them together :

Total Area = 6732 +1254 = 7986 m^2

Answer:

The value of x is 10cm

Step-by-step explanation:

The triangle given is a right angled triangle.

so two angles of the triangle is known,

let it be a=45

b= 90

and c=45, since its a right angled triangle.

to find out the sides of the triangle, we use the formula

tan45= opposite side/ adjacent side= 10/x; value of tan 90 is 1

so, 1= 10/x

x= 10cm

This is basically using SOH CAH TOA method, that is, sine theeta cosine theeta and tangent theeta.