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. First we will substitute the values of a and k.
We simplified the negative exponents inside and outside the parenthesis. Remember a negative exponent switches its position in the numerator and denominator. We rewrote them with positive exponents.
Now apply the division rule for exponents for applying the exponent 2 outside the parenthesis.
Apply the exponent 2 and get
The equation that can be used to determine the time for each leg is D. 600t = 480(18 – t)
<h3>How to calculate the equation?</h3>
Speed on going ,= 600 miles per hour.
Speed on return = 480 miles per hour
Time on returning = 18 - t
Distance = Speed × Time
Distance = 480(18 - t)
The equation that can be used to determine the time for each leg will be:
600t = 480(18 – t)
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You have animals with 4 legs, and animals with 2 legs. Both animals only have one tail. So, given that they only have one tail, there are only 23 animals in the farmyard.
Now, the equation would be,
Answer:
the difference between a number and 10 simply means ,that number minus 10
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