Answer:
trapezium
Step-by-step explanation:
Here is how to work 2, 3 , and 4.
Answer:
probability the spy is able to unlock the tablet on his first try.
Step-by-step explanation:
A probability is the number of desired outcomes divided by the number of total outcomes.
Desired outcomes:
1 correct password, so 
Total outcomes:
Nine-digit codes.
For each digit, there are 10 possible outcomes. So

What is the probability the spy is able to unlock the tablet on his first try?

probability the spy is able to unlock the tablet on his first try.
Answer:
Step-by-step explanation:
Alright, lets get started.
We have given two points that are end point of diameter.
So, the center point will be :
x co-ordinate :
y co-ordinate : 
Hence the center is : (-5,4)
Now the distance between these two end points :



So radius will be half of this diameter.

Plugging these values in standard equation of circle


.................................. This is the answer
Hope it will help :)