Step-by-step explanation:
- 0.06
- 60%
- 2/3
- 3/4
hope it's right :)
Let T = the distance, in miles, a tire lasts
T ~ N(70000,4400<span>²</span>)
P(T
75000)
= P(Z
)
= P(Z
)
≈ P(Z
1.14)
= 1 - P(Z < 1.14)
≈ 1 - 0.8729
= 0.1271
Add 0.02 by 0.4 and get 0.42 then divide 0.42 by 0.07x and get 6
x=6
You have to use the formula a=principal or initial amount(1+rate or %)^time or years