Name:
Block: Date:
Math 9 – Exponents Homework #2
-
Complete the following chart:
negative
exponent
|
positive exponent
|
expanded fraction
|
standard form (fraction)
|
5–4
|
|
|
|
10–9
|
|
|
|
2–8
|
|
|
|
()–6
|
|
|
|
()–3
|
|
|
|
|
()5
|
|
|
|
()4
|
|
|
|
|
|
|
-
Arrange the following in ascending order:
5–2 6–1 3–3 2–6
Stanley wants to have $5000 in his TFSA in 5 years’ time, which is currently paying 2.2% interest.
A formula can be used to help determine how much Stanley would need to deposit today : P = d(1 + i)–t
[ where : P = Principal d = amount deposited i = interest rate as a decimal and t = length of deposit ]
-
Determine how much money Stanley would need to deposit today in order to have $5000 in 5 years time.
Use the information below to help answer the following question
|
A half-life describes the amount of time for half the amount of a radioactive element to decay (change) into another element.
If scientists know how many half-lives have passed, they can calculate the original amount with the formula amount = m ÷ 2–n The amount remaining
m = mass of original isotope remaining,
n = number of half-lives passed
-
The half-life of fermium–23 is 3days. If Gillian has 1.5 grams remaining of a sample that is 1 month old, what was the original mass of fermium–253?
Dostları ilə paylaş: |