problem 8. (10 pts) for the function find the gradient of at ; find the rate of increase of at the point in the direction ; find the direction of maximum rate of increase at . what is the rate of increase in this direction?

Answers

Answer 1

The given function is [tex]f(x,y) = x^2 + y^2[/tex].

To find the gradient of f at the point (x0, y0), we take the partial derivatives of f with respect to x and y:

[tex]$$\nabla f(x0,y0) = \left(\frac{\partial f}{\partial x}, \frac{\partial f}{\partial y}\right) = \left(2x0, 2y0\right)$$[/tex]

The rate of increase of $f$ at the point (x0, y0) in the direction (u,v) is given by the dot product of the gradient and the direction vector:

[tex]$$\nabla f(x0,y0) \cdot (u,v) = 2x0u + 2y0v$$[/tex]

The direction of maximum rate of increase at (x0, y0) is the direction of the gradient, which is (2x0,2y0). The rate of increase in this direction is the length of the gradient vector, which is given by:

[tex]$$||\nabla f(x0,y0)|| = \sqrt{(2x0)^2 + (2y0)^2} = 2\sqrt{x0^2 + y0^2}$$[/tex]

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Related Questions

2078/08/20, A machine was valued Rs.20,000 whereas its original value was Rs. 17,500​.

it is an accountancy question..please answer fast

Answers

The depreciation if production during the first year is 6,000 and total estimated production during the working life of the machine is 60,000 units is 15000.

How to calculate the depreciation

Cost of machine = Rs. 1,70,000; Scrap value = Rs. 20,000;

Depreciation in production during the first year =  6,000 units;

Production units during the life of the machine = 60,000 units

Depreciation rate per unit = (Rs. 1,70,000 -  Rs. 20,000)/ 60,000 units

=  Rs. 2.5

Depreciation of first year =  6,000 * Rs. 2.5 = Rs. 15,000

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Complete question

If the original cost of a machine is Rs. 170,000, estimated scrap value Rs. 20,000, what is the depreciation if production during the first year is 6,000 and total estimated production during the working life of the machine is 60,000 units.

Which of the following functions are solutions of the differential equation y′′+2y′+1y=0 ?
A. y(x)=−x
B. y(x)=e^-x
C. y(x)=xe^x
D. y(x)=e^x
E. y(x)=xe^−x
F. y(x)=−e^x
G. y(x)=0

Answers

Option (B) and (E) functions are solutions of the differential equation y′′+2y′+1y=0.

What is differential equation?

An equation known as a differential equation describes the derivative or derivatives of an unknown function. Because they are equations involving a function and its derivatives (where the variable is a function rather than a number) (the functions obtained by differentiating it). Save this response. Common differential equations are used in everyday life to compute the flow of electricity, the motion of an item back and forth like a pendulum, and to illustrate the principles of thermodynamics. Additionally, in medical terminology, they are employed to graphically monitor the progression of illnesses.

Given that,

y′′+2y′+1y = 0

A.E = m² + 2m + 1 = 0

or, (m + 1)² = 0

or, m = ± 1

y = (c₁ + c₂x)e⁻ˣ

y = c₁e⁻ˣ + c₂xe⁻ˣ

Thus, option (B) and (E) are solutions  of the differential equation:

y′′+2y +1y = 0.

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If Jon can paint the equivalent of 5/12 of a fence in an hour, how many minute will it take for them to complete the job?

Answers

Answer:

25 minutes

Step-by-step explanation:

5/12×60 minutes

5×60=300

300/12

Answer =25

100 POINTS!!!
Find the equation of the linear function represented by the table below in slope-intercept form.

x y

1 0

2 5

3 10

4 15

Answers

sorry sweetheart!! we need to see the table!

In a game, Mateo earned 180 points for collecting stars. He earned 270 points for
lestroying ships. Plus, he earned 5 points for each prisoner he saved. If he finished
he game with 500 points, how many prisoners did he save?
A
50
B 10
C) 15
D 250
ht©Swun Math
6.EE.6
SWUN MATH
6.EE.7
Grade 6 Unit 5 Mid-Unit Assessment VB, Page 1

Answers

Answer:

B. 10

Step-by-step explanation:

We can solve this fast by adding the points from the stars and ships together, then subtracting that number from the total 500 points Mateo earnd.

So it would look like this:

180+270=450

500-450=50

So if Mateo scored 50 points from saving prisoners and save is worth 5 points each, we can do 50÷5=10.

Can someone help me on this?

Answers

take the equations and replace the variables accordingly with x and y;
5s + 10a = 3000
x = students
y = adults

5x + 10y = 3000

follow the instructions to find x/y intercept;
for example;
5(0) + 10y = 3000
10y = 3000
y = 300;

you would then want to solve for “x” by plugging “y” for 0.

I can explain further if you’d like;

Refer to the T-account below Work In Process 30,000 (12) Bal. 270,000 90,000 70,000 0,000 Entry (12) could represent which of the following? (9)110,000 Bal A) Direct labor cost incurred in production B) Purchases of raw materials C) The cost of goods manufactured transferred to Finished Goods D) The cost of indirect materials incurred in production

Answers

The correct option answer is C , that is Entry 12 represents The cost of goods manufactured transferred to Finished Goods

Given that, the T-account below Work In Process 30,000 (12) Bal. 270,000  90,000  70,000  110,000

We have,  Total work in progress (WIP) before Transfer =

                           30,000 + 90,000 +70,000 + 110,000 = $300,000

And the ending work in progress (WIP)  = 30,000

It clearly means that 270,000 (300,000 - 30,000) of goods has been transferred to finished goods inventory.

Therefore, the balance entry represents that the cost of goods manufactured transferred to Finished Goods.

The required question's table of T-account is attached below.

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Find mqn

Please help me

Answers

70 degrees is the measure of MQN from the provided figure.

Solving angles in a line geometry.

A line has length but no width, making it a one-dimensional figure. A line is made up of a collection of points that can be stretched indefinitely in opposing directions.

From the given figure, we are to determine the measure of angle <MQN. Applying the sum of angles on a straight line:

<MQN + 80 +30 = 180

<MQN + 110 = 180

<MQN = 180 - 110

<MQN = 70 degrees

Hence the measure of <MQN from the given figure is 70 degrees.

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Find the simple interest when $500 is invested at 6% for 3 years.

Answers

Given:-

[tex] \rm Principal = \bold { 500}[/tex][tex] \rm \: Time = \bold{ 3 year}[/tex][tex] \rm \: Interest \: rate = \bold 6 \%[/tex]

[tex] \: [/tex]

To find:-

[tex] \rm{simple \: interest = \bold {?}}[/tex]

[tex] \: [/tex]

By using formula:-

[tex] \pmb{\boxed{ \rm{Simple \: interest = \bold { \frac{Principal × Time × Rate}{100} }}}}[/tex]

[tex] \: [/tex]

Solution:-

[tex] \rm{SI = \frac{PTR}{100} }[/tex]

[tex] \: [/tex]

[tex] \rm{SI = \frac{500 \times 3 \times 6}{100} }[/tex]

[tex] \: [/tex]

[tex] \rm{SI = \frac{5 \cancel{00} \times 3 \times 6}{1 \cancel{00}} }[/tex]

[tex] \: [/tex]

[tex] \rm{SI = \frac{5 \times 3 \times 6}{1} }[/tex]

[tex] \: [/tex]

[tex] \underline{ \boxed{ \rm \bold{{ \red{SI =90}}}}}[/tex]

[tex] \: [/tex]

hope it helps!:)

your friend measured the distance between her town and the state capital on the map. Her measurement was 4 1/2 inches. Based on your friend's measurement ,what is the actual distance (in miles) between her town and the state capital ?

Answers

The actual distance (in miles) between her town and the state capital is 90 miles.

What is scale factor?

A scale factor is defined as the ratio between the scale of a given original object and a new object, which is its representation but of a different size (bigger or smaller).

The basic formula to find the scale factor of a figure is expressed as,

Scale factor = Dimensions of the new shape ÷ Dimensions of the original shape.

Given that, a map of the state where your friend lives has the scale 1/2 in : 2 mi.

Now, 10 ÷ 1/2

= 10×2

= 20

Her measurement was 4 1/2 =9/2 inches.

Now, 20×9/2

= 90 miles

Therefore, the actual distance (in miles) between her town and the state capital is 90 miles.

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"Your question is incomplete, probably the complete question/missing part is:"

A map of the state where your friend lives has the scale 1/2 in : 2 mi.

Your friend measured the distance between her town and the state capital on the map. Her measurement was 4 1/2 inches. Based on your friend's measurement ,what is the actual distance (in miles) between her town and the state capital?

How much does a customer pay for an article marked at $50.00 if a sales tax of 6% is charged?​

Answers

Answer:

Howdy so if you buy an item to which 6% tax is added, you pay 106% of the price. The price of the item is $50, you pay 50(1.06) = $53.

Geometry 1 find the measure of the angle

Answers

Answer:

46

Step-by-step explanation:

draw a line at 96° & make it parallel to bottom line

which will slice 96° into 2 angles

lower half is 180-130=50

top half is 96-50=46

angle 4r equals to top half

Susie's mom is keeping track of how many pieces of candy Susie and her four brothers are eating. The information is graphed below. At what rate is the amount of candy changing? A. -75 pieces of candy per day B. 90 pieces of candy per day C. -90 pieces of candy per day D. 75 pieces of candy per day

Answers

The rate of change for a graph passing through (0, 0) and (2, -180) is -90 pieces of candy per day

What is an equation?

An equation is an expression that shows the relationship between two or more numbers and variables. An equation can either be linear, quadratic, cubic and so on

The slope intercept form of a linear equation is:

y = mx + b

where m is the rate of change and b is the y intercept

Let y represent the total pieces of candy remaining after x days. Let us assume that the graph passes through (0, 0) and (2, -180). Hence:

[tex]Slope(rate\ of\ change) = \frac{y_2-y_1}{x_2-x_1}\\ \\substituting:\\\\slope=\frac{-180-0}{2-0} =-90[/tex]

The rate of change is -90 pieces of candy per day

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convert the given system to an augmented matrix. 2x1 x2 = 2 −x1 − x2 − x3 = 6. Find all solutions by reducing the system to echelon form and back substituting. (If there are an infinite number of solutions use s1
as your parameter

Answers

The solution to the system is x1 = -4, x2 = 10.

What is the solution to the system?

A solution to a system of equations is a set of values for the variable that satisfy all the equations simultaneously. In order to solve a system of equations, one must find all the sets of values of the variables that constitute solutions to the system. (5, 4) is a solution of the first equation, but not the second.

The given system can be converted to an augmented matrix as follows:

[ 2 1 | 2 ]

[-1 -1 -1 | 6 ]

To find all solutions, we will reduce the system to echelon form and back substitute.

Step 1: Echelon Form

We can perform row operations to reduce the matrix to echelon form:

[ 2 1 | 2 ] R1 = R1 * 1/2

[-1 -1 -1 | 6 ]

[ 1 1/2 | 1 ] R2 = R2 + R1

[ 0 -3/2 -1 | 5 ]

Step 2: Reduced Row Echelon Form

Next, we can perform additional row operations to reduce the matrix to a reduced row echelon form:

[ 1 1/2 | 1 ] R2 = R2 * 2

[ 0 1 | 10 ]

The reduced row echelon form of the matrix represents the system of equations in a simplified form and the solution to the system can be obtained by back substituting.

Step 3: Back Substituting

x2 = 10

x1 = 1 - 1/2 x2 = 1 - 1/2 * 10 = 1 - 5 = -4

Therefore, the solution to the system is x1 = -4, x2 = 10.

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Arts and Crafts An arts and craft supply store has a large crate that

contains brass, silver, and copper beads. Several friends take turns

pushing their hands into the beads, grabbing one, recording the bead

type, and placing the bead back into the crate. They then repeat the

process. The table shows the count for each bead type. Write a

probability model for choosing a bead.

Dlhrann-

Enter your

Answers

The probability of p(copper)=0.28

Probability model for choosing a bead?

Probability is a measure of the likelihood or chance that an event will occur, expressed as a number between 0 and 1, with 0 indicating that the event is impossible and 1 indicating that the event is certain to occur. Probability is a fundamental concept in mathematics, statistics, and science that is used to quantify uncertainty and forecast the likelihood of future events based on available data. Probability is a measure of the likelihood or chance that an event will occur, expressed as a number between 0 and 1, with 0 indicating that the event is impossible and 1 indicating that the event is certain to occur.

Given

Total Beads =112+96+192=400

Placing the bead back to the crate

so the total beads are always 400

copper:112

p(copper)=112/400=0.28

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Question Solve for x. x+27=−12 Enter your answer in the box. please answer Fast

Answers

Answer:

x = -39

-39 + 27 = -12

Step-by-step explanation:

Hope it helps! =D

Answer:

Here you have

Step-by-step explanation:

x + 27 = -12

x= -12 - 27

x= - 39

What are the measures of angles AB and C show your work and explain your answers? I really only need the answer to C please :) this is my first post so giving as much as I can to people who answer. PLEASE ANSWER SOON

Answers

The measure of angles becomes:

∠a = 30°

∠b = 60°

∠c = 105°

What is triangle?

Three vertices make up a triangle, a three-sided polygon. The angles of the triangle are formed by the connection of the three sides end to end at a point. The triangle's three angles add up to 180 degrees in total.

∠a and 30° are vertical angles and vertical angles are equal

∠a = 30°

We have a triangle with a, b and a right angle. Triangles have angles that add to 180°.

∠a + ∠b + 90° = 180°

30° + ∠b + 90° =180°

120° + ∠b = 180

∠b = 180° - 120°

∠b = 60°

Angle c and 70 form a straight line and straight lines are 180 degrees

∠c + 75° = 180°

∠c = 180° - 75°

∠c = 105°

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(−5/6x−7/12)−(−1/3x−1/4) . the slashes are fractions PLS ANSWER FAST

Answers

Answer:

That's what I got, not sure but I tried so I hope it helps.

4. Janet hiked 2.5 miles in one hour.
How far did she hike in kilometers?
A 0.6 km
B
1.6 km
C 4.0 km
D 4.2 km

Answers

Janet hiked a distance of 2.5 miles which is equivalent to 4 km

What is an equation?

An equation is an expression that shows the relationship between two or more numbers and variables. An equation can either be linear, quadratic, cubic and so on

Speed is the ratio of total distance to total time travelled. It is given by the equation:

Speed = distance / time

Janet hiked 2.5 miles in one hour. Hence:

Speed = distance / time = 2.5 miles / one hour = 2.5 miles per hour

1 mile = 1.609 km

2.5 miles = 2.5 miles * 1.609 km per mile = 4 km

Janet hiked 4 km

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Does someone mind helping me with this problem? Thank you!

Answers

Answer: the answer is 180 km.

Step-by-step explanation:

Answer:

180 km

Step-by-step explanation:

1 cm to 20 km

9cm=20 times 9

180 kilometers

Kevin run a woodhop. Every day the woodhop i open he earn money in ale and pend money on upplie. After cot, how much more money did Kevin make on Saturday than on Monday?

Answers

After cost, the more money did Kevin make on Saturday than on Monday is $376.89.

The amount of Spends on monday is,

Sales = $397.35

Supply cost = $108.72

So the profit he is earning is

$397.35 - $108.72 = $288.63

The amount of Spends on Saturday is,

Sales = $914.06

Supply cost = $248.54

So the profit he is earning is

$914.06- $248.54= $665.52

Money did Kevin make on Saturday than on Monday is,

Money from saturday - money from monday

= $665.52 - $288.63

= $376.89

Profit is the term used to describe the financial gain experienced when the revenue from a commercial activity exceeds the costs, costs, and taxes associated with maintaining that activity.

Any profits generated are returned to the company's owners, who can decide whether to keep the money for themselves, pay dividends to shareholders, or reinvest it in the company.

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Rabbits in a lab are to be kept on a strict daily diet that includes 34 grams of​ protein, 17 grams of​ fat, and 47 grams of carbohydrates. The scientist has only three food mixes available with the following grams of nutrients per unit.

Answers

Each​ rabbit needs 4 units of protein, 2 units of fats, and 3 units of carbohydrates for the dietary need.

Given that

Mix A: 6 protein, 4 fat, 2 carbs

Mix B: 4 protein, 2 fat, 6 carbs

Mix C: 5 protein, 2 fat, 8 carbs

Now convert these mixes into quadratic equations

6a + 4b + 5c = 47--------(1)

4a + 2b + 2c = 26--------(2)

2a + 6b + 8c = 44-------(3)

Now divide (2) and )3) equations by 2:

6a + 4b + 5c = 47

2a +  b +  c = 13------(4)

a + 3b + 4c = 22--(5)

Eliminates A:

Pairs equations #4 and #5

6a + 4b + 5c = 47

2a + b + c = 13  

Now multiply -3 for Equation(4) and after add with Equation (1):

6a+4b+5c=47

-6a -3b-2c = 39  

------------------------

b + 2c = 8

Pairs equations (4) and (5):

2a + b + c = 13

a + 3b + 4c = 22

multiply -2 for Equation(5) and after add with Equation (4):

2a + b + c = 13

-2a-6b -8c =44

-----------------------

-5b+-7c=-31

multiply everything by -1

5b+7c=31

2 by 2 system from equations above in bold:

b+2c=8

5b+7c=31

solves by substitution:  b = 8 - 2c

5(8 - 2c) + 7c = 31

40 - 10c + 7c = 31

40 - 3c = 31

-3c = -9

c = 3

Then b = 8 - 2(3) = 8 - 6

b=2

Simplified second equation:  2a+b+c=13

2a+2+3=13

2a=8

a = 4

Therefore, A=4 B=2 C=3

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solve the initial-value problem answer: xy = y x^2 sinx, y(pi/3) = 0

Answers

The value of the constant in the function is c  = -√3π²/6(3-π).

A differential equation is an equation that relates an unknown function and one or more of its derivatives. The equation dy/dx = f(x) is a simple example of a differential equation. Solving this equation means finding a function y with a derivative f. Therefore, the solutions of dy/dx are the antiderivatives of f. If F is one antiderivative of f, every function of the form y = f(x) + c is a solution of that differential equation.

Initial-value problems arise in many applications. Next we consider a problem in which a driver applies the brakes in a car. We are interested in how long it takes for the car to stop. Recall that the velocity function v(t) is the derivative of a position function s(t), and the acceleration a(t) is the derivative of the velocity function. In earlier examples in the text, we could calculate the velocity from the position and then compute the acceleration from the velocity. In the next example, we work the other way around. Given an acceleration function, we calculate the velocity function. We then use the velocity function to determine the position function.

The given equation is xy = y + x² sinx

⇒ xy - y =  x² sinx

⇒ y(x-1) =  x² sinx

⇒ y =  x² sinx/(x-1) +c

Also, y(π/3) = 0

Put x = π/3 in above equation:

y(π/3) =  (π/3) ² sin(π/3) /((π/3)-1)  + c = 0

After solving the above equation, we get c  = -√3π²/6(3-π)

Thus, the value of the constant in the function is c  = -√3π²/6(3-π).

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What is the value of sin^2-cos^2?

Answers

The of sin^2-cos^2 = [tex]Sin 2x Cos 2x = 2 Cos x (2 Sin x Cos2 x - Sin x)[/tex]

Sin equals cos where?

The sine of the angle is the ratio of the hypotenuse, or the angle's opposite, to the perpendicular in a right-angled triangle. Sinus is defined as Sinus = Perpendicular / Hypotenuse.

Sin 180 has a value of 0 precisely. One of the fundamental trigonometric functions is sine, which may be used to calculate the angle or sides of a right-angled triangle. Another name for it is trigonometric ratio.

If theta is an angle, then sine theta is the ratio of a right triangle's hypotenuse to its perpendicular.

trigonometric double angle formulas,

[tex]Sin 2x = 2 sin x cos x[/tex] ————(i)

And,

[tex]Cos 2x = Cos2x - Sin2x[/tex]

[tex]= 2 cos2x - 1 [Since Sin2 x + Cos2 x = 1][/tex]             ————(ii)

[tex]= 1 - 2Sin2x[/tex] ————(iii)

Now, multiply equation I by (ii) or (ii) by equation I to obtain the value of Sin 2x Cos 2x (i)

Think about equation I and (ii),

[tex]Sin 2x = 2 sin x cos x[/tex]

And,

[tex]Cos 2x = 2 cos2x - 1[/tex]

Simplifying the above equation, then we get

[tex]Sin 2x Cos 2x = 2 Sin x Cos x (2 cos2x - 1)= 4 Sin x Cos3 x - 2 Sin x Cos x= 2 Cos x (2 Sin x Cos2 x - Sin x)[/tex]

Think about equation I and (iii),

[tex]Sin 2x = 2 sin x cos xCos 2x = 1 - 2 Sin2x[/tex]

Simplifying the above equation, then we get

[tex]Sin 2x Cos 2x = 2 Sin x Cos x (1 - 2 Sin2x)= 2 Sin x Cos x - 4 Sin3 x Cos x= 2 Cos x (Sin x - 2 Sin3 x)So,Sin 2x Cos 2x = 2 Cos x (2 Sin x Cos2 x - Sin x)[/tex]

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For Halloween you bought a bag of 500 pieces of mixed candy. After just one hour you see that you only have 350 pieces left for the rest of the evening. What is the percentage change in candy after that first hour?a. -25%b. -35%c. -15%d. -30%

Answers

She has 480 pieces of candy left after Halloween (option a ) -25% percentage

to solve this problem we have to analyze the information given:

Candy available: six 100-piece bags

Number of children: 20

Pieces of candy for each child: 6

So, we have to calculate the total amount of candy available by multiplying the pieces of candy that each bag has (100) by the number of bags(6)

100 x 6 = 600

Then, we have to multiply the number of children (20) by the number of pieces of candy that each one receives (6) and then subtract that number to the number of pieces of candy available.

20x 6 = 120

600 -120 = 480

She has 480 pieces of candy left after Halloween (option a ) or -25 percentage

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On January 22 in 1943, the town of Spearfish, South Dakota, set the record for the world’s fastest temperature change. At 7:30 a.m., the temperature was -4°F. By 7:32 a.m., the temperature was 45°F. By 9:00 a.m. the same day, the temperature was 54 °F. By 9:27 a.m., the temperature was -4 °F. How many degrees did the temperature change each minute from 9:00 to 9:27?

Answers

From 9:00 a.m. to 9:27 a.m., the temperature changed from 54°F to -4°F, a change of 58°F. This change took 27 minutes.

The temperature change per minute was 58°F / 27 minutes = 2.15°F per minute.

a few months ago, mike and dez started a dog walking business. for each dog that they have agreed to walk, they recorded the total time (in hours) they walked that dog over a one-week period. these values are given below. use the calculator to draw a histogram for these values using 5 classes. 1.6,4.0,4.7,1.6,2.5,2.2,0.6,2.0,3.0,2.6 what percentage of their dogs are walked at least 1.5 hours but under 4.2 hours per week? (round your answer to the nearest percent.)

Answers

You can easily find the percentage of dogs that are walked at least 1.5 hours but under 4.2 hours per week by counting the number of data values in the appropriate class and dividing by the total number of data values, then multiplying by 100.

How you can create a histogram?

Determine the range of the data: 0.6 to 4.7.

Divide the range by the number of classes (5) to find the class width: (4.7 - 0.6) / 5 = 0.76.

Determine the lower limits of each class by starting at the minimum value (0.6) and adding the class width repeatedly: 0.6, 1.36, 2.12, 2.88, 3.64, 4.4.

Count the number of data values that fall into each class and record it in a table.

Draw a bar for each class using the lower limit of the class as the x-axis value and the height of the bar equal to the number of data values in the class.

After creating the histogram, you can easily find the percentage of dogs that are walked at least 1.5 hours but under 4.2 hours per week by counting the number of data values in the appropriate class and dividing by the total number of data values, then multiplying by 100.

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find mean in the above distribution

Answers

The mean in the above distribution is 1.84

How to find mean in the above distribution

From the question, we have the following parameters that can be used in our computation:

The figure

The mean value is then calculated as

Mean = SUm of the product of children and familes/Sum of families

So, we have

Mean = (0 * 23 + 1 * 19 + 2 * 29 + 3 * 9 + 4 * 20)/(23 + 19 + 29 + 9 + 20)

Evaluate

Mean = 1.84

Hence, the mean is 1.84

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A university student completed courses worth 3 credits and some courses worth 4
credits. The student earned a total of 54 credits after completing 15 courses. How
many courses worth 4 credits did the student complete?

Answers

9 courses for 4 credits.

Use a system of equations. Let’s say that the number of courses worth 3 credits is X and the number of courses worth 4 credits is Y.

The total number of courses the student took was 15, so X+Y=15.

Each X course was worth 3 credits each and each Y course was worth 4 credits each, for a total of 54, so 3X+4Y=54.

I’m going to take the first equation and solve it for X so I can plug it in to the second equation.

X=15-Y.

Now, plug it in to the second equation to solve for Y.

3(15-Y)+4Y=54

1. Distribute what’s inside the parenthesis.

45-3Y+4Y=54

2. Combine like terms.

45+Y=54

3. Subtract 45 from both sides.

Y=9

Find the exact length of line segment PQ

Answers

The exact length of line segment PQ is 22.4.

What is the distance between two points ( p,q) and (x,y)?

The shortest distance (length of the straight line segment's length connecting both given points) between points ( p,q) and (x,y) is:

[tex]D = √[(x-p)² + (y-q)²] D = \sqrt{(x-p)^2 + (y-q)^2} \: \rm units.[/tex]

Given;

p(x,y)=(17,4)

m(x,y)=(-2,16)

Now,

[tex]D = √[(x-p)² + (y-q)²] D = \sqrt{(x-p)^2 + (y-q)^2} \: \rm units.[/tex]

D^2= (-2-17)^2+(16-4)^2

D^2=361+144

D^2= 505

D=22.4

Therefore, the distance will be 22.4

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