Simplifying Expression! Help Please!
1 answer:
Answer
1.
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5.
Step-by-step-explanation
1. The given expression is
Regroup the terms to obtain;
Simplify to get;
2. The given expression is
Expand the brackets to get;
Regroup the terms to get;
Simplify
3. The given expression is
Expand the brackets to get;
Simplify;
4. The given expression is
Regroup the terms to get;
Apply the commutative property of multiplication to get;
Simplify;
5. The given expression is
Expand the brackets to get;
Regroup the terms to get;
Simplify;
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First, we need the probability of picking an odd number.
There are 5 cards in total, and 3 odd cards (3, 5, and 7).
That means that the probability that we'll draw an odd card would be .
Then, we have 4 cards left, and 2 even cards (4 and 6), meaning that the probability that we draw an even card will be or
.
To find the probability that these would happen in consecutive draws, we just multiply the probabilities together.
or 0.3.
To convert this into a percentage, we multiply the decimal by 100.
.
So the probability of picking an odd number and then picking an even number is 30%.
Hope this helps!