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Ann [662]
3 years ago
10

7: The point B (-8,5) is dilated from the origin with a scale factor of 12 . ​What are the coordinates of B'? A (−6,3) B (−4,2.5

) C (−16,10) D (−10,7)
Mathematics
1 answer:
SSSSS [86.1K]3 years ago
6 0

Answer:

The correct option is option B.

The coordinate of B' is (-4,2.5).

Step-by-step explanation:

Formula of dilation:

Image = (pre-image)×(scale factor)

Scale factor:

The amount by which the shrinks or grows is called " scale factor".

  • If the scale factor less than 1 then the shape shrinks.
  • If the sale factor equal to 1 then the shape remains same.
  • If the scale factor greater than 1 then the shape enlarged.

Given point is B(-8,5)

Scale factor is \frac12.

The co-ordinate of image B is (-8\times \frac12,5\times \frac12)

                                                 =(-4,2.5)

The coordinate of B' is (-4,2.5).

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The circle's square is an inscribed square.

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  2. The square can be constructed by first (c) Drawing a diameter
<h3>How to spot Rafael's mistake?</h3>

CIRCLE: A circle is the collection of all points on a plane that are at a specified distance from another point (the radius) (the centre). A radius is any distance separating a point on a circle from its center. Any two radii are equal in length under the concept of a circle.

SQUARE: In geometry, a square is a flat shape having four equal sides & four right angles (90°). A square is an unique sort of parallelogram as well as an equilateral rectangle.

Estimation for the error;

The diameter of a circle must be drawn first when drawing the square inside of a circle, following the circle itself.

This indicates that Rafael made two mistakes: first, he divided the circle into six halves, forgetting that a square is produced by first sketching a diameter.

To know more about square is inscribed in a circle, here

brainly.com/question/8797902

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The complete question is -

Select the correct answer from each drop-down menu.

Rafael wants to construct a square inscribed in a circle. He divides the circle into six equal arcs and then draws line segments between four of the points. What was the first error Rafael made?

1. The first error Rafael made was

A.Connecting points F and E

B. Dividing the circle in six parts

C. Connecting points B and F

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5 0
1 year ago
An air freshener starts with 33 grams and evaporates. In each of the following situations define a function that gives the remai
grin007 [14]
Hello!

A) 
<span>The mass of the air freshener A decreases by 3.2 grams each day. Define a function, f, to represent this situation.

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m=mi-(mi* \frac{3,2}{100}*t)

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5 0
3 years ago
Our class has 50 students. Assuming that no students are born on leap days (February29), what is the probability that no two stu
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Answer:  a) \dfrac{799}{31250}  b) \dfrac{30451}{31250}

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Probability(no two students share the same birthday)=\dfrac{^{365}P_{50}}{365^{50}}

Probability(no two students share the same birthday)=\dfrac{799}{31250}\approx 0.025568

Probability that at least one of the students has the same birthday as another student in the class is given by

1-P(\text{no student share the same birthday})\\\\=1-\dfrac{799}{31250}\\\\=\dfrac{30451}{31250}=0.974432

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Step-by-step explanation:

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bija089 [108]
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using a graph tool
see the attached figure

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