3 years ago

A countries population in 1991 was 231 million in 1999 it was 233

1 answer:

3 0

The answer is:A = 231e^(.0010776*12) = 234 million in 2003
k=(In(233/231))/(8)
k=1.00865/8 <===== you used the ratio of 233/321, not the natural log of the ratio. 

233/231 = 1.00865 
ln(233/231) = ln(1.00865) = 0.0086207 
k = 0.0086207/8 = 0.0010776

You might be interested in

Gabby buys a new purse for $33. The sales tax in her state is 6%. How much is the sales tax?

ankoles [38]

Answer:

$1.98

Step-by-step explanation:

6%=0.06

33*0.06=1.98

8 0

3 years ago

A pile of coins, consisting of nickels, dimes, and quarters, is worth $4.55. There are 4 more dimes than nickels and 3 quarters

frozen [14]

Fun

n=number of nickles
q=number of quarters
d=number of dimes

4 more dmes than nickles, 3 more quarters than dimes
d+4=n
q=3+d

total value is 455 cents
10d+5n+25q=455
divide both sides by 5 to simplify
2d+n+5q=91

now we convert all to one coin
q=3+d and n+4=d
subsitute 3+d for q and n+4 for d

2(n+4)+n+5(3+d)=91
2(n+4)+n+5(3+n+4)=91
2(n+4)+n+5(n+7)=91
2n+8+n+5n+35=91
8n+43=91
minus 43 both sides
8n=48
divide both sides by 8
n=6

sub back
n+4=d
6+4=d
10=d

q=3+d
q=3+10
q=13

6 nickles
10 dimes
13 quarters

5 0

3 years ago

For the right triangle find the missing length. Round your answer to the nearest tenth.

monitta

Answer:

Step-by-step explanation:

w = 4 units