Answer:
Step-by-step explanation:
let the first piece=x ft
second piece=2 x ft.
third piece=6 x ft.
x+2x+6x=180
9 x=180
x=20
first piece=20 ft.
Answer:
y > 44
Step-by-step explanation:
0.5y >22
y >22x 2
whats the question? ill help you out i just wanna Answer the right question
Answer: Hello mate!
You have one $20 bill, two $10 bills, three $5 bills and four $1 bills in a bag.
This adds to a total of 10 bills in the bag, and you want to know the expected value if you took one at random.
The expected value is defined as ∑pₙxₙ
where pₙ is the probability for each event (in this case is the number of bills of a given price divided the number of bills in the bag) and xₙ is the value of the bill.
Then we can write the expected value as:
E = (1/10)*$20 + (2/10)*$10 + (3/10)*$5 + (4/10)*$1 = (1/10)( 20$ + 2*$10 + 3*$5 + 4*$1) = (1/10)*($59) = $5.90
The expected value is $5.90.
