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Harrizon [31]
3 years ago
7

AB and BA name the same ray.

Mathematics
1 answer:
abruzzese [7]3 years ago
4 0
Answer:
False

Explanation:
A ray has a starting point on one end and extends to infinity on the other end.
Now:
ray AB means that the ray has a starting point at A and extends to infinity in the direction of B
ray BA means that the ray has a starting point at B and extends to infinity in the direction of B
The attached diagram illustrates this.

Therefore, the two rays are not the same.

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casey is six time as old as Ralph, In two years, she will be four time as old as Ralph. How old is each of them now?
Keith_Richards [23]

Casey is 18 years old and Ralph is 3 years old.

Step-by-step explanation:

Let,

Age of Casey = x

Age of Ralph = y

According to given statement;

x = 6y     Eqn 1

In two years

x+2=4(y+2)

x+2=4y+8

x = 4y+8-2

x = 4y+6     Eqn 2

Putting value of x from Eqn 1 in Eqn 2

6y=4y+6 \\6y-4y=6\\2y=6

Dividing both sides by 2

\frac{2y}{2}=\frac{6}{2}\\y=3

Putting y=3 in Eqn 1

x=6(3)\\x=18

Casey is 18 years old and Ralph is 3 years old.

Keywords: word problems, substitution method

Learn more about substitution method at:

  • brainly.com/question/12973601
  • brainly.com/question/13063819

#LearnwithBrainly

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Step-by-step explanation:

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