I don’t really get your question, because you said that ¾ of them are girls, Then how many girls are working in the piano?
You did not stated the question well.
However, I will try to answer this base on my understanding.
There are a total of 12 students that works in the library.
IF ¾ of them are girls:
=> 12 / 4 = 3 *3 = 9
=> 9 of them are girls and 3 of them are boys.
Thus, how many girls are working in the piano.
The probability is 9, there might be 9 girls working in the piano, or less than 9. Since you did not mention how many girls worked in different part of the library.
Answer:
Step-by-step explanation:
a) The half-life equation is given by:
b) Using the decay equation we have:
we need to find t when
Therefore, it will take 4820 years to decay to half the original amount.
I hope it helps you!
Answer:
Perimeter:
Area:
Step-by-step explanation:
I will assume the question asks for perimeter and area of the rectangle with given dimensions.
The height is "4"
The width (assuming) is ""
First, the perimeter:
Perimeter is sum of all 4 sides of a rectangle, so we have 2 widths and 2 lengths, we sum them up:
Now, the area:
Area is the height times width, so it will be:
Answer:
63.24 euros were deposited in the bank.
Step-by-step explanation:
Claire's bank account was overdrawn.
Last month, Initial balance in the bank account = -45.32 euros
After a month, the balance became positive i.e. 17.92 euros.
To find:
What changes were made in the account?
Solution:
The balance came to a positive value from the negative value, it means that some money was deposited in the bank account.
Let the money deposited in the bank account = euros
As per question statement:
Answer:
12 sugars and 24 flour
Step-by-step explanation:
if 4 x ( times ) 3 = 12,
8 x 3 = 24.