Answer:
25.
Step-by-step explanation:
Let the number of pupils be x, then:
there are 0.6x girls and 0.4x boys.
From the given information:
0.6x - 0.4x = 5
0.2x = 5
x = 5/0.2
= 50/2
= 25.
Answer: a) 
b) By 0.75 square meters the new area is increased.
Step-by-step explanation:
Let the length of room be l
Let the breadth of room be 'b'
As we know the formula for "Area of rectangle ":

Now, According to question, The new area of the room is 175% of the previous area.
So, a) New area of the room becomes,

So, it means Length of the room is increased by 175%, because of which the area is increased by 175%.
b) By how many square meters has the area of Megan's room increased

Answer:
6 feet
Step-by-step explanation:
Given that,
The perimeter of the square, P = 24 feet
We need to find the side of the square.
The perimeter of a square is given by the formula as follows :

Where
a is the side length
So,

So, the side of each log be 6 feet.
I’m assuming you mean: What is the value of i^5? This symbol (^) means that the 5 is an exponent of five.
If you did mean i^5, then the answer is i.
or to put it in simpler terms,
i^5=i
I hope this helped!
Can you translate it into english? :)