Answer:
Z-score = 1.5
Step-by-step explanation:
Z-score = (x-mean)/standard deviation
= (90-75)/10
= 1.5
2y+4=3(y-1)
2y+4=3y-3
4+3=3y-2y
Y=7
X=2
Answer:
Step-by-step explanation:
Good evening ,
_______________
a) p(rat)=1-(0,35+0,4+0,1)
b) p(cat ∪ hamster)=0,35+0,1
c) p(dog then dog)= (0,4)²
:)
Collect like terms (x + 7x) + (-1 + 4 - 3)
Simplify
Answer: 8x
