Ok so remember
order of simplification
PEMDAS
parenthaseese
exponents
multiplicaton or division whichever comes first
addition or subtraction whichever comes first
ok so remmeber work from the left to right parenthasees first and work from inside to outer parenthasees
so first one
innermost parenthasees first so
first step is 2-4
subtract 4 from 2
second one
if xy=0 then assume x and y=0 so
(a+2)(b-9)=0
a+2=0
a=-2
b-9=0
b=9
so answe ris a=-2
b=9
third questions
innermost parenthaees first
subtract 4 from 2
ok
1. subtrac 4 from 2
2. a=-2, b=9
3. subtract 4 from 2
A. The internet told me again
Answer:
y = -1/2x + (-1)
Step-by-step explanation:
Answer:
The expected number of wins for the player is 2.31
Step-by-step explanation:
No. of face cards = 12
total cards = 52
Probability of getting face card = 
Probability of getting face card = 
The player plays 10 times
Formula : 
n = no. of trials = 10
p = probability of success=
E=expected number of wins
So, the expected number of wins for the player is 2.31
Answer: You can't solve this without knowing either x or y
Step-by-step explanation:
