Answer:
a. b=4
Step-by-step explanation:

From the attached triangle drawn below:
NL=20, LM=3b, 

Since we are told that:

The correct option is A.
Answer:
0.875
Step-by-step explanation:
look at the fraction as a division problem
8÷7
Answer:
80
Step-by-step explanation:
Answer:
The value is 
Step-by-step explanation:
From question we are told that
The number of types of marbles present jar is n = 3
Generally the probability of drawing a green marble is

Generally the probability of drawing a marble that is not green is

From the question we are told that there will be continuous drawing of marbles from the jar (in such a way that after each marble is drawn it is being replaced) until a green marble drawn
Let m be the number of times marbles has been drawn when a green marble was gotten
it then means that for m - 1 times the marbles where drawn a green marble was not obtain.
Generally the probability drawing m times is mathematically is mathematically represented as

=> 
Answer:
$3.36
Step-by-step explanation:
What is the unit cost of POTATO salad, if 0.25 lb costs $0.84?
$0.84
---------- = $3.36
0.25 lb