Hi there!
We can set up a ratio to model the problem...
540/3000 = x/100
Now, just cross multiply and solve for x.
54000 = 3000x
x = 18
Therefore, 18 percent of last semester's college costs was spent on books. Hope this helped and have a great day!
Answer:
Explanation:
The element is <em>einstenium-253</em>. That means that the mass number, i.e. numbrer of protons plus neutrons, of this isotope is 253, but that is not relevant to answer the question.
It is said that the element <em>loses about 2/3 of its mass every month, </em>then to find the remaining amount, every month you have to multiply by 1/3.
With that you can create a decaying function that gives a sample's mass in grams:
Now you can replace the initial mass with 450 g and write the specific function for this sample:
Answer:
132
Step-by-step explanation:
Straight lines add up to 180
180-48=132