Answer:
Step-by-step explanation:
If we want to simplify the expression 
, we have to note that exponent rules state that 
<em>.</em>
<em />
<em>This means that if we add the exponents, that will be what we raise y to the power of</em>.
So .
Hope this helped!
Answer:
Simpify each expression :
1) B
2)B
3)C
4)A
5)A
6)C
Find each product, and simplify the expression :
7)B
8)A
9)A
Step-by-step explanation:
I will send the explanation in a little time.
The number that make this statement true is 21.
Answer:
<u>Bob and John can finish the job together in approximately 2.92 hours or 2 hours and 55 minutes</u>
Step-by-step explanation:
Let's recall that the formula for solving this kind of problems is:
T/A + T/B = 1, where T = time working together, A = the time for person A working alone, and B = the time for person B working alone.
Now, replacing with the values we have:
T/5 + T/7 = 1
35 is the Lowest Common Multiple of 5 and 7
5T + 7T = 35
12T = 35
T = 35/12
T = 2.92 (Rounding to the next hundredth) and 0.92 * 60 ≅ 55
T ≅ 2.92 hours (Around 2 two hours and 55 minutes)
6 is expanded into:
73/10-55/10
Take away:
18/10
Simplify:
9/5
Make a mixed fraction
1 4/5
7 is expanded:
27/5-19/5
Subtracted:
8/5
Converted into a mixed fraction:
1 3/5
