Answer:
PEMDAS
Step-by-step explanation:
1) Parentheses
2) exponents
3) multiplication
4) division
5) addition
and finally 6) subtraction
The events are dependent.
When the first card is not replaced, you change the probability of the second card. At the very least, you have changed the total number of cards to draw from.
-pd - pz = -2z + 59
-pz = -2z + 59 + pd
-pz + 2z = 59 + pd
-z(p - 2) = 59 + pd
-z = 59 + pd over p - 2
z = -59 + pd/p - 2.
The sum of 5 and 8 is 13.
Unknown number is x
So 13x=42
x=4
