Help help help please and brain list for you
1 answer:
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Answer:
Step-by-step explanation:
We know that:
-The actual lenght from the tip to the stem of a red oak leaf is 6 inches.
- In the scale drawing this lenght is 1.5 inches.
- In the scale drawing the lenght from tip to stem of a post oak leaf is 0.8 inches.
- The scale used on both drawings are the same.
Then, let be "x" the actual length (in inches) of the post oak leaf.
Based on the data provided in the exercise, we can write the following proportion:
Finally, we must solve for "x" in order to find its value.
We get this result:
Therefore, the actual length of the post oak leaf is
<u>Answer:</u>
a) The equation to model the situation is 8.8 m/min t minutes = 32.12 m
b) The reason to write distance as positive number is because he is ascending to point zero
c) It took 3.65 minutes for scuba driver to reach the surface
<u>Solution:</u>
Given, A scuba diver was exploring a reef 32.12 m below sea level. The diver ascended to the surface at a rate of 8.8 m/min.
<u><em>(a) Write an equation to model the situation. </em></u>
If the diver ascends at 8 m/min from 32.12 below sea level we can write an expression if d is the distance, t is the time and r is the rate. This expression can calculate the distance he is below sea level, the rate or the time it takes to reach the surface.
Using the formula d = rt, so 32.12 m = 8.8m/min (t) time minutes
<u><em>b) Explain why it is reasonable to write the distance, d, as a positive number.</em></u>
We can write the distance as a positive number because the diver is 32 m below sea level and he is ascending and not descending below that point. Which means he is ascending to point zero.
<u><em>(c) How long did it take the diver to reach the surface?</em></u>
We can calculate the time with the expression d = rt
The time it takes to reach the surface is 3.65 mins.
Hence, a) 32.12 m = 8.8 m/min x t minutes, b) because he is ascending to point zero, c) 3.65 minutes.