The equivalent expression to 
is 
Step-by-step explanation:
Step 1:
In sums like these, it is easier to take the common term out of the simplification.
In the expression , the common term between 
and 
is the term s. So we take the term s as the common factor.
So taking s out of we get 
Step 2:
If we multiply a positive with a negative we get a negative. S0 
So the equivalent expression to is
Area of a square is a^2 where a is side length
if u triple the side then it is 3a
A=(3a)^2=9a^2
It would be 9. Because each person has to pay 4$ so 9*4=36 or 36/4=9
Answer:
9
Step-by-step explanation:
All you have to do is subtract the temperatures once you get the final answer for them.
4 days, -7°C, = 43<em>°C</em>
5 days, -6°C, = 34<em>°C</em>
<em>43 - 34 = 9</em>
<em>9°C</em> = 9
<u><em>~ LadyBrain</em></u>
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.
