Answer:
(a) 
(b) We use the property of exponent that when there is multiplication of two function then there exponent are added
Step-by-step explanation:
We have given expression

(a) We have to find the value of a
We know the property of exponent that when there is multiplication of two function then there is addition of exponent
So 


(b) We use the property of exponent that when there is multiplication of two function then there exponent are added
Answer:
Rachel earns per hour is $ 13.64 .
Step-by-step explanation:
As given
Rachel earned $85.25 for working
hours.
i.e
Rachel earned $85.25 for working
hours.
Now calculate earning of Rachel for 1 hour .





Therefore Rachel earns per hour is $ 13.64 .
It is the first one,
........ 20. 24
256a. b
Answer:
165 degrees
Step-by-step explanation:
According to the protractor, the angle stretches from 10 degrees to 175 degrees. Subtract 10 from 175 to get the total measurement, and you will get 165. The angle is 165 degrees.