Lara and Tim took different routes to travel from Point A to Point C. Lara took the route along A, B, and C. Tim took the route
along A, E, D, and C. Their routes with distances and times are shown.
Which person's average speed is greater?
Which person's average speed is greater?
2 answers:
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Answer:
21.3%
Step-by-step explanation:
Given that:
Money spent by Jodie for buying English reading books = 25% lesser than that of Claudia
and
Money spent by Gianna is 9% lesser than that of Claudia.
To find:
By what percent, Gianna spent more than Jodie ?
Solution:
Let the money spent by Claudia on her English books = 100
Now, as per question statement:
Money spent by Jodie = 100 - = 75
Money spent by Gianna = 100 - = 91
Now, to find the answer:
Therefore, Gianna spent <em>21.3% </em>more than the amount that was spent by Jodie.
Answer:
<em>t = 1.51</em>
Step-by-step explanation:
<u>Exponential Model</u>
The exponential model is often used to simulate the behavior of a magnitude that either grow or decay in proportion to the existing amount of that magnitude.
The model can be expressed as
In this case, Mo is the initial mass of the radioactive substance and k is a constant which value is positive if the mass is growing or negative if the mass is decaying.
The value of k is not precisely given in the question, we are assuming
The model is now
We are required to compute the time it takes the mass to reach one-half of its initial value:
Simplifying
Taking logarithms
Solving for t