Answer: 72 tosses
Explanation: If the probability of landing heads is 7/12, the probability of landing tails is 5/12. So then you do cross multiplication, where you multiply the 12 and the 30, equalling 360. Then divide that by 5, equalling 72.
For this case we have the following system of equations:

Equaling the equations we have:

The variable y:

Thus, we can round the solution as:

It is verified with the graph
Answer:
Option C
3^8 = <span>6561
3^9 = </span><span>19683
6581 x 19683 = </span><span>129533823
quite a big number</span>
Answer:
Variant D
Step-by-step explanation:
-2*(-2)*(-2)*(-2)=16
The answer is is A
Hope this helps