Customers per hr.....108 (customers) / 9 (hrs) = 12 customer per hr
Answer:
You will need
280 mL of the 60% solution
and 40 mL of pure alcohol.
Step-by-step explanation:
Let 'x' be the amount of 60% alcohol solution and y the amount of pure alcohol.
Therefore:
(0.6x + y)/320 = 0.65 ⇒ 0.6x + y = 208
x + y = 320
Solving the sistem of equations:
x = 280 and y = 40
Therefore, You will need
280 mL of the 60% solution
and 40 mL of pure alcohol.
Since your scale is 1ft:1.26cm, a 30-ft tall school would need to have a
![30*1.26=37.8](https://tex.z-dn.net/?f=30%2A1.26%3D37.8)
cm model. Dividing this by how tall each toothpick is, you'll get:
ANSWER: The model would be 6 toothpicks tall.
To find out how many cotton swabs you'll need, we just divide 37.8 by how tall each swab is:
ANSWER: The model would be 5 cotton swabs tall.
Answer:
x =(8-√176)/8=1-1/2√ 11 = -0.658
Step-by-step explanation: