Question

7x+3 y= 15 ; 5x- 12 y= -39 solve by cramers rule ​

Answer 1

Step-by-step explanation:

If two triangles are equals than the ratio of their square is equal to the ratio of their corresponding sides.

∴

arc(△PQR)

arc(△ABC)

=

QR

2

BC

2

⇒

49

25

=

(9.8)

2

BC

2

⇒

7

5

=

9.8

BC

⇒BC=

7

9.8×5

=7.0cm

2