Answer:
~427$
Step-by-step explanation:
1. Subtract the 20% price -> 499*0.8=399.2$
2. Add the 7% tax -> 399.2*1.07=427.144$
Answer:
Step-by-step explanation:
Given
Required
Determine the number of boys and girls
We have to convert the ratio to fraction;
Number of girls can be calculated as:
Answer:
11505 bacteria
Step-by-step explanation:
Given :
The bacteria in a certain culture triples every 7.7 hours. The culture has 6,500 bacteria at the start .
As per the exponential growth , we have
Here ,
is starting number of bacteria
R is rate at which number of bacteria increases
T is time elapsed
P is one period of rate
On putting these values in formula , we get
So, the culture will contain 11505 bacteria after four hours .
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