We are given expression : .
We need to simplify it.
<em>First we need to apply quotient rule of exponents.</em>
According to quotient rule of exponents, we need to subtract powers.
Therefore, .
<em>Now, we need to apply exponents of exponent rule in next step.</em>
According to exponents of exponent rule, we need to distribute whole exponent inside exponent.
Therefore, .
Answer:
a. 18
b. 45
Step-by-step explanation:
The question states that 2/5 of the class are girls which means 3/5 are boys:
Divide this value by 3 to get the value of :
27 ÷ 3 = 9
Multiply this by 5 to find , the total pupils in the class:
9 x 5 = 45
As the number of girls is of the total pupils:
9 x 2 = 18
So there are 18 girls in the class which has a total pupil size of 45.
Hope this helps!