A survey reveals 252 out of 350 students in 7th grade like to read. What percent like to read? Write a percent proportion equati
1 answer:
Answer
72% students likes to read .
Step-by-step explanation:
Let us assume that the percent of student likes to read be x.
As given
A survey reveals 252 out of 350 students in 7th grade like to read.
As Percent is always from 100 percent .
Thus
x is from 100 in case of proportions.
252 students are from 350 students .
Therefore the proportion equations becomes
x : 100 :: 252 : 350
Simplify the above
x = 72%
Therefore 72% students likes to read .
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Answer:
So it would takes approximately 6.9 hours to reach 32 F.
Step-by-step explanation:
For this case we have the following differential equationÑ
We can reorder the expression like this:
We can use the substitution and
so then we have:
IF we integrate both sides we got:
If we apply exponential in both sides we got:
And if we replace w = u-T we got:
We can also express the solution in the following terms:
For this case we know that since w ehave a cooloing,
, we have this model:
And if we want that the temperature would be 32F we can solve for t like this:
If we apply natural logs on both sides we got:
So it would takes approximately 6.9 hours to reach 32 F.
Here look at this for my answer...
