Crystal grows every month 1.9 promile of its mass. For how many months to grow a crystal from weight 360 g to 593 g?
Leave us a comment of example and its solution (i.e. if it is still somewhat unclear...):
Showing 0 comments:
Be the first to comment!
To solve this verbal math problem are needed these knowledge from mathematics:
Next similar examples:
- Radioactive material
A radioactive material loses 10% of its mass each year. What proportion will be left there after n=6 years?
The town has 65,000 inhabitants. 40 years ago there were 157,000. How many people will live in town in 10 years if the average rate in population is as in previous years?
What is the population of the city with 3% annual growth, if in 10 years the city will have 60,000 residents?
- The city 3
The city has 22,000 residents. How long it is expected to have 25,000 residents if the average annual population growth is 1.4%?
- Tenth member
Calculate the tenth member of geometric sequence when given: a1=1/2 and q=2
- Computer revolution
When we started playing with computers, the first processor, which I remember was the Intel 8080 from 1974, with the performance of 0.5 MIPS. Calculate how much percent a year rose CPU performance when Intel 486DX from 1992 has 54 MIPS. What
Determine missing coordinate of the point M [x, 120] of the graph of the function f bv rule: y = 5x
- The crime
The crime rate of a certain city is increasing by exactly 7% each year. If there were 600 crimes in the year 1990 and the crime rate remains constant each year, determine the approximate number of crimes in the year 2025.
Determine the number whose decimal logarithm is -3.8.
- Exponential equation
In the set R solve the equation: ?
- Geometric sequence 4
It is given geometric sequence a3 = 7 and a12 = 3. Calculate s23 (= sum of the first 23 members of the sequence).
if ?, what is b?
- GP - 8 items
Determine the first eight members of a geometric progression if a9=512, q=2
- A perineum
A perineum string is 10% shorter than its original string. The first string is 24, what is the 9th string or term?
- Theorem prove
We want to prove the sentense: If the natural number n is divisible by six, then n is divisible by three. From what assumption we started?
The population grew in the city in 10 years from 42000 to 54500. What is the average annual percentage increase of population?
- Six terms
Find the first six terms of the sequence a1 = -3, an = 2 * an-1