Answer:
on what...like brush how do we help u if u don't have a question
1/ 28 is the answer.
= 1/7 ÷4
= 1/7 ÷ 4/1
=1/7 X 1/4
Multiply top by top, bottom by bottom
=1/28
If you do not know how to do it:
First make both sides into a fraction ( Whole numbers always have a 1 as a denominator).
Then you reciprocate (Flip) the second fraction.
Finally you multiply top by top, bottom by bottom
You get the answer!<span />
Answer:
20. -2n-1
21. 4d-2
22. 14x+4
23. 4d+2
24. -6r-5
Step-by-step explanation:
Answer:
1/10
Step-by-step explanation:
There can be 10 total digits in the tens place: 0,1,2,3,4,5,6,7,8,9
if the middle is 0 the probability is 10%
Answer:
P(A ∩ B) = 0.
a) NO
b) YES
Step-by-step explanation:
Thinking about this through Venn diagrams we can sort of understand that:
if P(A) = 0.2 and P(B) = 0.2, and P(A∪B) = 0.4.
there's no overlapping between P(A) and P(B).
(If there was overlapping then P(A∪B) < 0.4, since you'd be excluding the overlapped part from getting counted twice.
Think of it in terms of calculating areas circles A and B, if the circles were disjoint, then the sum of the areas A and B would be 0.2+0.2. But if the circles were overlapping then the sum of the areas would be 0.2+0.2-P(A ∩ B), where P(A ∩ B) is the overlapping part)
since there's no overlapping P(A ∩ B) = 0.
a) NO
events A and B are only independent when P(A ∩ B) > 0 (or overlapping)
b) YES
events A and B are mutually exclusive when P(A ∩ B) = 0 (or disjoint)
