R is 1 because in the table nothing has change.
<span>hypothesis :-
if x=30, then 3/4x+5≠20
let Q:- x=30 P:- 3/4x+5≠20
we need to prove if Q then P (Q →P)
proof :-
lets assume 34x+5=20 is true
now x=30
so
3/4(30)+5=27.5 ≠20
which is a contradiction
proved ^</span>
Answer:
B
Step-by-step explanation:
20 × 30 = 600
30 × 6 = 180
5 × 6 = 30
but 20 × 5 doesn't equal 10
9/x = 4/12
cross multiply
4*x = 9*12
x = 9*12/4
x = 9*3
x = 27
Answer:
10 ÷ 5/6= 12
2/9 ÷ 9/8= 5
Step-by-step explanation:
