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: 10.8 seconds
Step-by-step explanation:
![-16t^2 +170t+40=10\\\\16t^2 -170t-30=0\\ \\ t=\frac{-(-170) \pm \sqrt{(-170)^2 -4(16)(-30)}}{2(16)}\\\\t \approx 10.8 \text{ } (t > 0)](https://tex.z-dn.net/?f=-16t%5E2%20%2B170t%2B40%3D10%5C%5C%5C%5C16t%5E2%20-170t-30%3D0%5C%5C%20%5C%5C%20t%3D%5Cfrac%7B-%28-170%29%20%5Cpm%20%5Csqrt%7B%28-170%29%5E2%20-4%2816%29%28-30%29%7D%7D%7B2%2816%29%7D%5C%5C%5C%5Ct%20%5Capprox%2010.8%20%5Ctext%7B%20%7D%20%28t%20%3E%200%29)
Answer:
c) X - 5 1/2= 3 1/2
Step-by-step explanation:
only one that is relating to the question
Answer:
0, because the house is already painted. If this isn't a riddle then, it should take 4 days because that is half the people, two times the workload per person.
You would get the annual salaries by dividing each total salary by the number of years it took to earn it. For example, to get the physician's annual salary, you would divide 5,610,000 by 30 to get an answer of $187,000.