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Anika [276]
2 years ago
10

Point A(-58) is reflected across the line y = x. What are the coordinates of A? Show your work and explain

Mathematics
1 answer:
Alona [7]2 years ago
7 0

Answer:

  A'(8, -5)

Step-by-step explanation:

Reflection across the line y=x can be written as the transformation ...

  (x, y) ⇒ (y, x) . . . . . . swap the values of x and y

Then point A(-5, 8) will be reflected to ...

  A' = (8, -5)

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Question 19 Only, Please show your work.<br><br> Solve the problem.
ankoles [38]

Answer:

5\sqrt{2}

Step-by-step explanation:

Draw a diagonal (line segment from one corner to the opposite corner).  You'll form two right triangles with the diagonal being the hypotenuse of both triangles.

Use the Pythagorean Theorem:  (leg)^2 + (leg)^2 = (hypotenuse)^2.

Let  h  represent the length of the hypotenuse.

h^2 = 5^2+5^2\\h^2=25 + 25\\h^2 =50\\h=\sqrt{50}\\h=5\sqrt{2}

The question is just a bit vague. It should say opposite corners.  I'm assuming the question does not mean the length of one side!

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Answer:

Use the formula for direct variation

Step-by-step explanation:

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3 years ago
What is the sum of the measures of the interior angles of a regular polygon if leach exterior angle measures 120°?
GREYUIT [131]

Answer:

180

Step-by-step explanation:

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scoundrel [369]

17) x-8=11

18) 9-x=5

19) x+6=7

20) x+(-4)=-18

Step-by-step explanation:

17) The difference between a number and 8 is 11

Let number = x

then the equation will be:

x-8=11

Solving:

x-8=11

x=11+8\\x=19

18) Nine less than a number is five.

Let number = x

then the equation will be:

9-x=5

Solving:

9-x=5\\-x=5-9\\-x=-4\\x=4

19) Seven is equal to a number plus 6

Let number = x

then the equation will be:

x+6=7

Solving:

x+6=7\\x=7-6\\x=1

20) The sum of a number and -4 is -18

Let number = x

then the equation will be:

x+(-4)=-18

solving:

x+(-4)=-18\\x-4=-18\\x=-18+4\\x=-14

Keywords: Algebraic Expressions

Learn more about Algebraic Expressions at:

  • brainly.com/question/1617787
  • brainly.com/question/1600376
  • brainly.com/question/9720317

#learnwithBrainly

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3 years ago
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