Answer:
number 5 is 78 and number 6 is 6
Step-by-step explanation:
Answer:
D
Step-by-step explanation:
we can find x/y by multiply 3a/b * 3a/b
x/y = 9a^2/b^2
4.2x - 1.4y = 2.1 |multiply both sides by 10
42x - 14y = 21 |subtract 42x from both sides
-14y = 21 - 42x |change signs
14y = 42x - 21 |divide both sides by 14
y = 3x - 1.5
I think the answer is a or d not sure