Please help with my math assignment! Simplify, write the expression using only positive exponents.
1 answer:
Answer:
Step-by-step explanation:
To evaluate or simplify expressions with exponents, we use exponent rules.
1. An exponent is only a short cut for multiplication. It simplifies how we write the expression.
2. When we multiply terms with the same bases, we add exponents.
3. When we divide terms with the same bases, we subtract exponents.
4. When we have a base to the exponent of 0, it is 1.
5. A negative exponent creates a fraction.
6. When we raise an exponent to an exponent, we multiply exponents.
7. When we have exponents with parenthesis, we apply it to everything in the parenthesis.
We will use these rules to simplify.
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Answer:
Allen go to bed at <u>9:15 p.m</u>.
Step-by-step explanation:
Given:
Allen started his homework at 8:10 p.M. And worked for 45 minutes. Then he phoned a friend and talked for 20 minutes. He went to bed when he finished the call.
Now, to find the time Allen go to bed.
Allen started his homework at 8:10 p.m.
And worked for 45 minutes.
So, to get the time when he finished homework is by adding 45 minutes and the time when he started homework:
Thus, he finished his homework at 8:55 p.m.
Then he phoned a friend and talked for 20 minutes and went to bed when he finished the call.
<em>As, 1 hour = 60 minutes.</em>
Now, to get the time when he go to bed by adding 20 minutes and the time when he finished homework:
Therefore, Allen go to bed at 9:15 p.m.