For the first one multiply each term by the LCM of 4 and 6, which is 12:-
15x -36 = 2y..................(1)
and second multiply by 5:-
2x + y = 9..............(2)
solving:-
from equation (2) y = 9-2x, substitute in equation (1):-
15x - 36 = 2(9-2x) = 18 - 4x
19x = 54
x = 54/19 = 2.84
so y = 9 - 2(2.84) = 3.32
Answer:
0.28125 or 9/32
Step-by-step explanation:
Answer:
49
Step-by-step explanation:
100- 51 = 49
Answer:
67.2
Step-by-step explanation:
5 + 7 = 12
6 * 12 = 72
72 - 4.8 = 67.2
Answer:

Step-by-step explanation:
So we have:

And we want to solve for π.
First, divide both sides by h:

Now, divide both sides again by r²:

And this is our answer :)