78.2k views
10 votes
The value of y is:

please help thanks so much.

The value of y is: please help thanks so much.-example-1
User Johnny Z
by
7.9k points

2 Answers

8 votes

Answer:

  • C) 14

Explanation:

Parallel lines divide the transversals proportionally.

Set proportions and solve for y:

  • y/(y + 21) = 10/(10 + 15)
  • y / (y + 21) = 10/25
  • y / (y + 21) = 2/5
  • 5y = 2(y + 21)
  • 5y = 2y + 42
  • 5y - 2y = 42
  • 3y = 42
  • y = 14

Correct choice is C

User Meadhikari
by
7.9k points
5 votes

Answer:

y = 14

Explanation:

If a line is parallel to a side of a triangle and it intersects the other two sides then it divides those sides proportionally , that is


(y)/(21) =
(10)/(15) =
(2)/(3) ( cross- multiply )

3y = 42 ( divide both sides by 3 )

y = 14

User TheMar
by
9.0k points

No related questions found

Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.

9.4m questions

12.2m answers

Categories