Question

if a is equal to 2 b is equal to 1 by 3 is equal to 1 by 4 so verify 4a +2b -c​

Answer 1

Answer:

4a+2b-c

4a+2b-c4×2+2×1÷3-1÷4

4a+2b-c4×2+2×1÷3-1÷48+6-4

4a+2b-c4×2+2×1÷3-1÷48+6-418

Step-by-step explanation:

Hope it will help you these is your answer

Answer 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

∘