Answer:
78.5
Step-by-step explanation:
The formula for area of a circle is pir^2
So we have 5 for r, so r^2 would be 25.
Using 3.14 for pi, we get the answer is 78.5
Answer: Group 12
Step-by-step explanation: The element is Mercury.
Answer:
-50 2/5.
Step-by-step explanation:
First subtract the whole numbers:
12 - 22 - 40
= -50.
Next the fractions:
1/5 - 2/5 - 1/5
= -2/5
So the answer is -50 2/5.
Answer:
Step-by-step explanation:
Answer:
See below ~
Step-by-step explanation:
<h3>What is the rat population in 1993?</h3>
⇒ Number of years since = 0 ⇒ <u>t = 0</u>
⇒ Apply in the formula
⇒ n(0) = 73e^(0.02 × 0)
⇒ n(0) = 73e⁰
⇒ n(0) = 73,000,000 rats
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<h3>
What does the model predict the rat population was in the year 2009?</h3>
⇒ Number of years since 1993 : 2009 - 1993 = 16 ⇒ <u>t = 16</u>
⇒ Applying in the formula
⇒ n(16) = 73e^(0.02 × 16)
⇒ n(16) = 73e^(0.32)
⇒ n(16) = 73 × 1.37712776 × 10⁶
⇒ n(16) = 100.530326 x 10⁶
⇒ n(16) = 100,530,326 rats
