Earlier snow depth = 2 feet
later snow depth = 1.6 feet
change
2 - 1.6
0.4 feet
percentage change
(0.4 / 2) * 100
20 %
The day of the month that was 75% of the pond algae-free is: on day 28 or third day.
<h3>75% of the pond algae-free</h3>
Since we were told the algae doubled every day until it was covered in algae on day 30 of the month.
Hence:
Day 30 (First day)= It was 100% covered.
Day 29 (Second day)=It was 50% covered.
Day 28 (Third day )=it was 25% covered, which will be the same as 75% pond algae-free.
Therefore the day of the month that was 75% of the pond algae-free is: on day 28 or third day.
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The complete question is:
amount of algae covering the Smith's backyard pond doubled every day until it was completely covered in algae on day 30 of the month. On what day of that month was 75% of the pond algae-free?
Answer:
84.4
Step-by-step explanation:
done
Answer:
= 1.3n - 4.7
Step-by-step explanation:
There is a common difference d between consecutive terms
d = - 2.1 - (- 3.4) = - 0.8 - (- 2.1) = 0.5 - (- 0.8) = 1.8 - 0.5 = 1.3
This indicates the sequence is arithmetic with nth term ( explicit rule )
= a₁ + (n - 1)d
where a₁ is the first term and d the common difference
Here a₁ = - 3.4 and d = 1.3 , then
= - 3.4 + 1.3(n - 1) = - 3.4 + 1.3n - 1.3 = 1.3n - 4.7
A recursive rule allows a term in the sequence to be found by adding d to the previous term, that is
= 
+ 1.3 : a₁ = - 3.4
The answer is B) A hand is burned when touching a pot handle
Explanation: the first and last examples are not a direct exchange of heat from one to the other. Meaning that because the soup and stone are being surrounded by heat, they aren’t in as direct of contact as the hand. The hand touches directly to the hot handle and is immediately burned by the exchange of heat
