3a = a + 22
Take away a from both sides:
2a = 22
Divide both sides by 2:
a = 11
Answer: a = 11
The first one = 12 and the second one = 18.
the reason why they have different answers is because of PEMDAS.
Parentheses
Exponents
Multiplication
Division
Addition
Subtraction
For the first equation we gave to multiply the exponent (2) to the number (3) because that’s the order of PEMDAS. So, 3x2=6 then + 6=12.
For the second equation there are parentheses, which means we solve the equation inside the parentheses first because of PEMDAS. So, 6+3=9 then x 2 =18.
They have different answers because they are ordered in different ways . PEMDAS controls the order we solve equations in.
Hope this helped:)))
Answer:
-2.65 usd
Step-by-step explanation:
1. Note that 10%= probability 0.1 5%= 0.05 .
Lets find the average prize value :
1 usd *P(1 uzd)+5usd *P(5usd)+20,usd*P(20usd)=
= 1*0.1+5*0.05+20*0.1=2.35 USD is a value average prize brutto.
However for 1 turn the player has to pay 5 USD.
That means the net value is 2.35-5=-2.65 USD
Actually it means that every turn the player loses 2.65 USD averagly.
