Answer:
<u>65.</u>
Step-by-step explanation:
1. Write the expression.
2. Expand the expression.
![3x3x3x3 -[(-4)x(-4)]](https://tex.z-dn.net/?f=3x3x3x3%20-%5B%28-4%29x%28-4%29%5D)
3. Simplify.
![81 -[16]\\\\65.](https://tex.z-dn.net/?f=81%20-%5B16%5D%5C%5C%5C%5C65.)
Answer:
4<C
<10
Step-by-step explanation:
Theorem: Given a triangle with sides A, B and C the sum of the lengths of any two sides of a triangle must be greater than the third side:
1. A+B>C
2. B
+C
>A
3. A+C>B
Thus given two sides of A=3 and B=7 C can be:
7
−3<C
<
7+3
C range
4<C
<10
Evaluating 3^3/2 gives us 5.196152423, so we can round this to 5.
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>
