When you roll two numbers you have four kinds of outcomes: EE, EO, OE, OO (where E = even, O = odd).
You get an even sum only if you sum two numbers that are both even or both odd, therefore the outcomes wanted are two: EE and OO.
Therefore:
P(sum is even) = 2 / 4 = 0.5
Hence, there is a 50% probability that, when you roll two numbers, their sum will be even.
Reduce the expression by cancelling the common factors: 1/n
<span>215% of 89.87=193.2205</span>
Answer:
-0.5 hope this help
Step-by-step explanation:
Step-by-step explanation:
Hello there!
Just solve for x by combining like terms:
2x+18=20
2x=20-18
2x=2
x=1
:)
