For what value of k, the following pair of linear equations has infinitely many solutions?
10x + 5y – (k – 5) = 0
20x + 10y – k = 0
Answers
Answered by
2
Answer:
In △ABC AB=AC
⇒∠B=∠C (Angles opposite to equal sides are equal)
Now using angle sum property
∠A+∠B+∠C=180
∘
⇒80
∘
+∠C+∠C=180
∘
⇒2∠C=180
∘
−80
∘
⇒∠C=
2
100
∘
=50
∘
now ∠C+∠x=180
∘
(Angles made on straight line (AC) are supplementary)
⇒50
∘
+∠x=180
∘
⇒∠x=180
∘
−50
∘
=130
∘
@ARSH♥️♥️
✌️insta@_arsh_deep_29✌️
Similar questions
Social Sciences,
5 months ago
Social Sciences,
5 months ago
History,
5 months ago
Math,
9 months ago
Math,
9 months ago
English,
1 year ago
Biology,
1 year ago