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morpeh [17]
3 years ago
15

Peter played his favorite video game for 10 hours last week. Today Peter's parents restricted him to 5 hours a week for the next

8 weeks.
Create a function, f(x), that models Peters total video game time and explain what each number in the situation represents, using complete sentences.
Mathematics
1 answer:
Alexeev081 [22]3 years ago
3 0
 we are given in the problem the number of hours Peter has played for video games. In this case, f(x) is the number of hours of playing with x as the number of weeks of playing. In this case, the equation f(x) = 5x. 
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2. Select all transformations that must take any point A to any point B.
kherson [118]

The given transformation of reflection, rotation and translation are rigid transformation

The transformation that must take any point A to any point B are;

  • <u>Rotation of 180° around the midpoint of segment AB</u>
  • <u>Reflection across the perpendicular bisector</u>
  • <u>Translation by the directed line segment AB</u>

Reason:

<em>Question: The given quadrilaterals ABCD and A'B'C'D' are congruent</em>

Required; To select all transformation that must take a point A to point B

Solution:  

  • Rotation of 180° around the midpoint of segment AB

A rotation of 180° about the midpoint of segment AB will change the places of points A and B

A(x, y) → R₁₈₀ → A'(-x, -y)

Let the coordinates of the origin be the midpoint of segment AB, and let (x, y) represent the coordinate of the point B(x, 0) we have;

∴ The coordinates of point A is A(-x, 0), which gives;

A(-x, 0) → R₁₈₀ → A'(x, 0) = point B

Therefore a rotation about the midpoint of AB must take point A to point B

  • Reflection across the perpendicular bisector

The reflection of a point (x, y) about y-axis gives a point (-x, y), therefore, we have;

A(-x, 0) → Reflection across the y-axis → A'(x, 0) = point B

Therefore, a reflection across the perpendicular bisector of the line AB must take the point A to point B

  • Translation by the directed line segment AB

A translation along the directed line segment AB of point A(-x, 0) 2·x units right gives;

A'(-x + 2·x, 0) = A'(x, 0) = Point B

Therefore, the transformations that must take any point A to any point B are;

<u>Rotation of 180° around the midpoint of segment AB</u>

<u>Reflection across the perpendicular bisector</u>

<u>Translation by the directed line segment AB</u>

Learn more here:

brainly.com/question/12369596

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Step-by-step explanation:

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51. I checked the comments but I still didn't understand it, sorry :/

54.

(43+45+47+49)=184

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liubo4ka [24]
<span>The ratio of sides is, 8:10 = 4:5
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