A=positive because if he get some of the negatives then the number will either turn 0 or negative and has to go inthe pile
b=-0.3or-0.4or-0.5
-0.2-0.3=0.1
-0.2-0.4=0.2
-0.2-0.5=0.3
c=-0.1or-0.2
-0.2-0.1=-0.1
-0.2-0.2=0
one is negative and the other is 0 so they must go back in the pile
If two events are independent, then
.
Use formulas for conditional probabilities:
.
For independent events these formulas will be:
.
Now in your case 
and 
.
This shows that the only correct choice is A.
You can first turn both numbers into a improper fraction so it looks like this: 41/8-11/4.
Then you have to change the denominator so that they are the same, which looks like this: 41/8-22/8.
After, you subtract the numerator and keep the denominator the same, which will then look like this 19/8.
Lastly, you turn your numbers back into a mixed number so it is 2 3/8.
Answer:
57 points
Step-by-step explanation:
<span>From the problem, you can get this equation:
Jane is 2 years older than Sally
J=z+2
David is 4 times older than Jane.
D=4J
</span>Write two equivalent expressions that represent David’s age in terms of Sally’s age, z, and explain how the two expressions relate to one another.<span>Sally is z years old.
From the 2 equation above, you can get:
</span>D=4J
D=4(z+2)
D=4z+8
D-8=4z
(D-8)/4=z
The two equivalent expression would be D=4z+8 and (D-8)/4=z
The expression that more usefull would be D=4z+8 if you want to determine David age.
