Answer:
x = 1
Step-by-step explanation:
This is a proportion, meaning you can cross-multiply to solve it.
1.5 * 4 = 6x
6 = 6x
1 = x
Answer: y=29, x=-3
Step-by-step explanation:
eq. 1: 9x+y=2
9 • -3+y=2
-27+y=2
y=29
eq. 2: -4x-y=-17
4x+y=17
5x=-15
x=-3
Solution :
From the given equation :
E[ E (X|Y) ] = E (X)
a). Then,
E[ E [ X|Y,Z] | Z] = E [ X|Z ]
---- True
E [ E [ X|Y ] | Z ] = E [ X|Z ]
---- False
E [E [X | Y,Z ]] = E [X|Y ]
---- False
b). Th quantity E [ g (X,Y) | Y,Z ] is ,
- A random variable ----- True
- A number ----- False
- A function of (X,Y) ----- False
- A function of (Y,Z) ----- True
- A function of Z only ------- False
Answer:
7 hours
Step-by-step explanation:
She is driving at 780/12 (65) mph. 455/65=7. She will take 7 hours