800 because 80% of 800 is 640
EXPLANATION
We have that the area under the probability density curve is equal to 1.
As the width of the rectangle is 2, the height must be 1/2.
Then, the probability that X is between 0.2 and 1.54 is as follows:
P = 1/2 ( 1.54 - 0.2 )
= 0.67
Hence, the probability is 0.67
Cheack the expononets may be it wrong harder to get
Answer:
---------
Step-by-step explanation:
x-3= -9
x= -9/ 3
x= -3
( -3x)-5 =16
-3x = 16+5
×= 21/-3
x = -7
