to be sure that 2 of them will be blue i have to select 7+2=9 balls
7+8=15 balls in the urn
P=9/15
to be sure that 4 of them will be yellow i have to select 8+4=12 balls
P=12/15
8x-2=-9+7x
Add 2 to both sides
8x=-7+7x
Subtract 7x from both sides
x=-7
Answer:
a). -1/2
Step-by-step explanation:
Answer:um....
Step-by-step explanation:
Answer:
11
Step-by-step explanation:
h(-4)= -13
h(-2)=8
-13+3(8)=11