Multiply the number of attempts with the probability,
160 x 0.8 = 128 attempts made.
Hope this helps.
Yes 90 is 1/10 of hundred
I think it would be 35 combinations but I may be wrong
Step-by-step explanation:
The given inequality is :

Solving RHS of the inequality:

Adding 6 both sides of the inequality

The attached figure shows the graph for the given inequality.
Answer:
431.2
Step-by-step explanation:
hope this helps :3