Answer:
8.5
Step-by-step explanation:
Exponentially growth.
Let’s say one person starts with the flu. After the first day, there are suddenly
1 x 2 = 4 people sick
And the rest of the days just explode in magnitude:
Day 2: 1 x 2 x 2 = 8 people sick
Day 3: 1 x 2 x 2 x 2 = 16 people sick
Day 4: 1 x 2 x 2 x 2 x 2 = 32 people sick
Etc.
You can rewrite all that repeated multiplication as *exponents*, which is why we call it exponential growth.
Day 1: 1 x 2^1 = 4
Day 2: 1 x 2^2 = 8
Day 3: 1 x 2^3 = 16
And after n days, 1 x 2^n - or just 2^n - people would be sick.
Here’s a photo of my working out. There’s heaps of ways to do this but this is what I got...
Answer:
B. 0.3
Step-by-step explanation:
sin²(t) + cos²(t) = 1
sin²(t) + 0.1² = 1
sin²(t) = 1 - 0.01 = 0.09
sin(t) = √(0.09) = 0.3
1. Given that e<span>vents A and B are dependent, P(A)=20%, P(BIA)=25%. What is P(A and B)?
P(BIA)=[P(A and B)]/P(A)
it follows then that:
P(A and B)=P(A)*P(BIA)
P(A)=0.2
P(BIA)=0.25
hence
P(A and B)=0.2*0.25=0.05=5%
2. Given that </span><span> P(A) =12%, P(B)=48% and P(A or B)=50%. What is P(A and B)?
P(A or B)=P(A)+P(B)-P(A and B)
but
P(A)=12%, P(B)=48%, P(A and B)=50%
thus
P(A or B)=12%+48%-50%
simplifying the above we obtain:
P(A or B)=60%-50%=10%
</span>
