What is the area of the real object that the scale drawing models?​

Answer:

Step-by-step explanation:

One characteristic of a reflection that is useful for answering this question is that it always reverses the clockwise/counterclockwise orientation of a figure. Rotation and translation have no effect on that orientation.

__

1. translation by reflection

Reflection across two parallel lines has the net effect of translating a figure twice the distance between the parallel lines. So, one way to effect a translation using two lines of reflection is to draw one of them through the perpendicular bisector of a point and its translated image. Then the other line would be drawn parallel to the first through the image point.

True: translation can be replaced by two reflections

__

2. translation by rotation

A single point can be moved from one set of coordinates to another by rotating around any point on the perpendicular bisector of the original and its image. To "undo" the change in direction of other points in the image, the image can be rotated an equal angle in the reverse direction about the point that is in its proper place.

That is, if we rotate figure ABC an amount of X° about a point on the perpendicular bisector of AA', so that A ends up at A', then the translation can be finished by rotating that figure by -X° about point A'.

The simplest case is an initial rotation of 180° about the midpoint of AA', followed by another rotation of 180° about A'.

True: translation can be replaced by two rotations

__

3. rotation by reflection

As discussed above, reflection changes orientation and rotation does not.

However, a rotation can be replaced by two reflections. The rotation angle is equal to twice the angle between the lines of reflection. The point where the lines of reflection meet is the center of rotation.

False: rotation can be replaced by reflection

__

4. reflection by rotation and translation

As discussed above, reflection changes orientation, but rotation and translation do not.

False: reflection can be replaced by rotation and translation

Answer:

11

Step-by-step explanation:

3-(-8) = 3+8

= 11

The direction and speed the plane traveling is at About 84.3° west of north at approximately 502.5 mph. Option C

We need to first  find the distance between points A and C using the distance formula; Distance AC = √((x2 - x1)² + (y2 - y1)²)

If we input the figures as seen in the diagram, it becomes

Distance AC = √((-30 - 20)² + (520 - 20)²)

which is 502.49. if we round it off, it becomes 502.5

We have to find find the angle θ that the plane is traveling using the law of cosines

cos(θ) = (AB² + BC² - AC²) / (2 x AB x BC)

cos(θ) = (500² + 50² - 502.5²) / (2 x 500 x 50)

which is -0.000125

θ = arccos( -0.000125)

θ = 90.0071621563 (in degrees)

Give than the wind is blowing west, the angle should be measured west of north.

180° - 90.01° = 90°

It only mean that the plane is travelling at approximately 84.3° west of north  

The answer is based on the question below;

A plane is set to fly due north, but it is pushes off course by crosswind blowing west. At 1 pm, the plane is located at point A and at 2pm, the plane is located at point C, as shown in the diagram. In what direction and at what speed is the plane traveling?

A. About 5.7° west of north at approximately 500.1 mph.

B. About 5.7° west of north at approximately 502.5 mph

C. About 84.3° west of north at approximately 500.1 mph.

D. About 84.3° west of north at approximately 502.5 mph

Point C coordinates (-30, 520)

Point A (20, 20)

Distance from A to B on a straight course is 500

B to C is 50

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Answer:

the answer is 12! good luck!:)

Answer:The answer is (b) 12

Step-by-step explanation:

Hi, this is basically  a simple addition series, and each number increases by 2. The  First number is 2 Second number = 2 + 2 =4 Third number = 4 + 2 = 6 Fourth number = 6 + 2 = 8 Fifth number = 8 + 2 = 10  and Sixth number = 10 + 2 = 12 .

Hope this helps!

Answer:

I think its 90 degrees.

Step-by-step explanation:

Its a right angle

Answer:

180

Step-by-step explanation:

52 + 90 = 142

180-142=38

YXZ =180

(I'm going off based on what I was taught)

The correct r code to build a linear regression model with response variable y and explanatory variable x is option a. lm(y~x).

The code lm(y~x) will create a linear model with y as the response variable and x as the explanatory variable.

The lm() function in r is used for linear regression, and the formula y~x indicates that y is the response variable and x is the explanatory variable. The other options, lr(y~x) and lm(y, are not correct r code for building a linear regression model.

In summary, the correct r code for building a linear regression model with response variable y and explanatory variable x is lm(y~x).

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Potential energy is the energy when an object is at rest, while the kinetic energy is when the object is in motion.

Formulas

Potential energy is calculated using:

\(\mathbf{PE = mgh}\)

Where:

While kinetic energy is calculated using:

\(\mathbf{KE = \frac 12mv^2}\)

Where:

Examples

The potential energy of a body that of mass 5 kg at a height of 2.5 meters above the ground is

\(\mathbf{PE = 5 \times 9.8 \times 2.5}\)

\(\mathbf{PE = 122.5J}\)

The kinetic energy of a body that of mass 5 kg moving at a velocity of 2.5m/s is

\(\mathbf{KE =\frac12 \times 5 \times 2.5^2}\)

\(\mathbf{KE =16.625J}\)

Note that, the question is incomplete; so, I provided a general explanation

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Answer:

hey! I think you forgot to upload the graph xD

Step-by-step explanation:

or I can't see it but I'm very sure you didn't upload it

Answer:B

Step-by-step explanation:

I took the test

Answer:

16+21/8-6 simplifies to 13

Hope this helps!!

Answer:

D. 13

Step-by-step explanation:

Step 1:

16 + 24 / 8 - 6

Step 2:

16 + (24 / 8) - 6

Step 3:

16 + 3 - 6

Step 4:

(16 + 3) - 6

Step 5:

19 - 6

Answer = 13

Hope it helps :)

The results of operations between vectors are, respectively:

Case A: u + w = <- 3, - 1>

Case B: - 6 · v = <6, 6>

Case C: 3 · v - 6 · w = <- 21, - 15>

Case D: 4 · w + 3 · v - 5 · u = <39, 4>

Case E: |w - v| = √(4² + 3²) = 5

In this problem we must determine the operations between vectors, this can be done by following definitions:

Vector addition

v + u = (x, y) + (x', y') = (x + x', y + y')

Scalar multiplication

α · v = α · (x, y) = (α · x, α · y)

Norm of a vector

|u| = √(x² + y²)

Now we proceed to determine the result of each operation:

Case A:

u + w = <- 6, - 3> + <3, 2>

u + w = <- 3, - 1>

Case B:

- 6 · v = - 6 · <- 1, - 1>

- 6 · v = <6, 6>

Case C:

3 · v - 6 · w = 3 · <- 1, - 1> - 6 · <3, 2>

3 · v - 6 · w = <- 3, - 3> + <- 18, - 12>

3 · v - 6 · w = <- 21, - 15>

Case D:

4 · w + 3 · v - 5 · u = 4 · <3, - 2> + 3 · <- 1, - 1> - 5 · <- 6, - 3>

4 · w + 3 · v - 5 · u = <12, - 8> + <- 3, - 3> + <30, 15>

4 · w + 3 · v - 5 · u = <39, 4>

Case E:

|w - v| = |<3, 2> - <- 1, - 1>|

|w - v| = |<4, 3>|

|w - v| = √(4² + 3²) = 5

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The length FE in the circle is 6 units

The arc AE has a measure of 64 degrees

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

The circle

Given that the lengths from the center to either chords are equal

This means that

FE = 6 units

For the other circle, we have

BC = 58 degrees

AB = ED

The arc AE is calculated as

AE = 180 - BC - ED

Where

AB = ED = BC = 58 degrees

So, we have

AE = 180 - 58 - 58

Evaluate

AE = 64

Hence, the arc AE is 64 degrees

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Answer:

I think its A

Step-by-step explanation:

Answer:

51 questions she answered correctly.

Step-by-step explanation: 85/100 x 60

= 510/10

= 51

Answer:

51 questions

Step-by-step explanation:

To do this we need to realize that 85% is equal to 85/100. This can be simplified in fraction form to .85.

Looking at the question, we see that it says "Briley answered 85% of the 60 quiz..." A key word here is of. Of always means multiply. So we can see if we were going to form an equation, we would be multiplying.

Briley answered correctly = (85%) times (60 questions)

Mathematically, ?=(.85)x(60)=51

So we know she answered 51 correctly, and that 51 is 85% of 60.

I hope this helps you!

The range of the provided quadratic function is y≤1, and its domain is all reals. The domain is a collection of all input values, while the range is the collection of all output values.

The domain is a collection of all input values, while the range is the collection of all output values. Any real values of have a definition for the given function. So, all real numbers are included in the supplied function's domain. It is evident from the provided graph that the function's maximum output value is. The potential output values are as follows. The range of the provided quadratic function is y≤1, and its domain is all reals.

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Answer:

1

Step-by-step explanation:

across the middle of the B

Answer:

Step-by-step explanation:

Answer:

12p=48

Step-by-step explanation:

Answer:

3. x

4. -3

Step-by-step explanation:

coefficient are stuff with a varible

constants are any other reg number

If the line of the graph is vertical then the slope of the graph is zero. The coordinate of the y-value will never change on vertical lines.

The vertical line is a line that is parallel to the y-axis. A vertical line can be defined as a line on the coordinate plane where all the points on the line have the same x-coordinate. A form of test employed in relation is the vertical line test. Any kind of vertical line equation lacks a y-intercept. The vertical line test is used to determine whether or not the given relation is a function. The vertical line is another name for the vertical bar. A mathematical sign is an upright slash. Depending on the context, it may be used to represent a certain kind of logic or an operation. The vertical line is the line that runs along the y-axis.

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Answer:

A

Step-by-step explanation:

40

Answer:

Step-by-step explanation:

-3≤ x = graph 6

-3 > x = graph 3

x≥ 3 = graph 2

x ≤ 3 = graph 4

3 > x = graph 1

x > 3 = graph 5

the closed circles means greater/less than or equal to

the open circle means greater/less than

the direction of the arrow tells you if the number is greater than x or less than x

Answer:

J+11=M

Step-by-step explanation:

What ever age MAcy is Josie is 11 years older than Macy I think the equation is correct sometimes  I struggle with those.

Answer:

$16.10

Step-by-step explanation:

He spent $16.10 in total. Because 3.5 x 4.6 feet = 16.1

Answer:

$16.10

Step-by-step explanation:

3.50 x 4.6 = 14 + 2.10

Answer:

  (d)  (0, 0), (0, 9), (9, 0)

Step-by-step explanation:

You want to know the vertices represented by the matrix 3T, where ...

  \(T=\left[\begin{array}{ccc}0&0&3\\0&3&0\end{array}\right]\)

The scaled matrix 3T is found by multiplying each element by the scale factor:

  \(3T=\left[\begin{array}{ccc}0&0&9\\0&9&0\end{array}\right]\)

Each column is an (x, y) pair representing a vertex. The vertices of the scaled triangle are ...

  (0, 0), (0, 9), (9, 0)

<95141404393>

Answer:

  k ≈ 0.1733

Step-by-step explanation:

Using the numbers given, we find the multiplier of the population is 800/200 = 4 in 8 hours. This means the equation of growth can be written ...

  y = 200(4^(t/8))

When this is written in the form ...

  y = 200·e^(kt)

We can compare the two equations to see that ...

  4^(1/8) = e^k

Taking natural logarithms, we have ...

  1/8·ln(4) = k ≈ 0.1733

The growth rate k is approximately 0.1733.

_____

Additional comment

The comparison we were looking for was (4^(1/8))^t = (e^k)^t. Instead of "comparing" the equations, you could set them equal and solve for k.

  200(4^(t/8)) = 200e^(kt)

  4^(t/8) = e^(kt) . . . divide by 200

  t/8·ln(4) = kt·ln(e) . . . . take natural logs

  1/8·ln(4) = k . . . . . . use ln(e) = 1 and divide by t

The measure of each exterior angles of rectangle is 90°

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

A rectangle

A rectangle is a polygon with 4 sides

So, the measure of the exterior angle can be calculated using the formula for the exterior angles in a polygon

The exterior angles in a polygon are found by using:

Exterior of a rectangle in a polygon =  360°/Number of sides of the polygon

In this case,

The number of sides of the rectangle = 4

So, we have

Exterior of a rectangle =  360°/4

Evaluate

Exterior of a rectangle =  90°

Hence, the value of the measure of each exterior angles of rectangle is 90°

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Complete question

Find the measure of each exterior angles of rectangle?

Step by step​

\(\mathfrak{\huge{\pink{\underline{\underline{AnSwEr:-}}}}}\)

Actually Welcome to the Concept of the Differential Calculus.

Since, we know this is a definite calculus,

thus we get here as, by using the Chain Rule.

The probability that the mean of this sample is less than 105.4 is 14.46%

The z score is used to determine by how many standard deviations the raw score is above or below the mean. It is given by:

\(z=\frac{x-\mu}{\sigma/\sqrt{n} } \\\\x=raw\ score, \sigma=standard\ deviation, \mu=mean,n\ is\ sample\ mean\\\\\\Given\ that\ \sigma=45,\mu=124.5,n\ =36,hence:\\\\For\ x<105.4:\\\\z=\frac{105.4-124.9}{45/\sqrt{36} }=-1.06\)

From the normal distribution table, P(x < 105.4) = P(z < -1.06) = 0.1446 = 14.46%

The probability that the mean of this sample is less than 105.4 is 14.46%

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