Question

Which system is equivalent to
1
5x2 + By2 = 50
(7x² + 2y² = 10²


(A) 5x2 +By2 - 50
7-21x² - by²= 10

(B) 5x2 + by2 = 50
-21x²-by? - 30

(C) 35x2 +42y2 = 250
(-35x2 – 10y2 --50

(D) 35x2 +42y2 = 350
-35x2 - 10/2 --50

Answer 1

Well I’m my opinion and what I have the answe is A

Answer 2

Answer:

D

Step-by-step explanation:

Because If you add together to eliminate x you multiply the top by 7 and the bottom by 5 and you get d and that cancles out x. Sorry bad at explaining.