Answer: 7
hours
<u>Step-by-step explanation:</u>
Dad: 
Son: 
Together:
+
= 
(15x) +
(15x) =
(15x)
3x + 15 = 5x
<u> -3x </u> <u>-3x </u>
15 = 2x
<u> ÷2</u> <u>÷2 </u>
7.5 = x
Answer:
1. P(C AND D) = 0.3
2. (C.) C and D are not mutually exclusive because P(C AND D) ≠ 0
3. (A.) The events are not independent because P(C | D) ≠ P(C)
4.P(D | C) = 0.5
Step-by-step explanation:
• Let P(C) = 0.4
• Let P(D) = 0.5
• Let P(C | D) = 0.6
1.) Find P(C AND D).

2.) Events can be mutually exclusive meaning the both event cannot happen at the same time. So, P(A and B) = 0
3.) Events can be "Independent", meaning each event is not affected by any other events.
4.) Find P(D | C)

Answer:
71
Step-by-step explanation:
8²=64
64+7=71
I hope this helps!
So a dime is .10 or 10 cents
a quarter is .25 or 25 cents
12(.10)=$1.2
4(.25)=1
the equations would be
.25(x)
.10(x)
and if you need them combined it would be
.25(x) + .10(x)
:)