Answer:
each book is 20 dollars
Step-by-step explanation:
If it's 4|6-8|, the answer would be 8
6-8=-2 but since its absolute value it would just be 2
4×2=8
Answer:
The proportion of the population which is infected is =0.07692
Step-by-step explanation:
Let the events be,
A: a person is infected.
B: the test result is positve
According to the question we have,
So
Hence,
Now
The probability that a person is infected is
So the probability that a person is infected is =0.07692.
The proportion of the population which is infected is
Hence the proportion of the population which is infected is =0.07692
63x+45x = 108x
You just multiply 3x by 21 and 15 to get 63x and 45x. You then add the like terms to get 108x.
Answer:
5/2<x<5
Step-by-step explanation:
-7<3-2x<-2
or -7-3<-2x<-2-3
or -10<-2x<-5
or -10/-2>x>-5/-2
or 5>x>5/2
or 5/2<x<5
Therefore, 5/2<x<5 is the solution.