Answer:
- temperature is decreasing as time passes
- x-axis
- hot drink temperature (°C)
Step-by-step explanation:
1. Each value of temperature is lower than the one previous, so we can say the temperature is decreasing. We also notice that the rate of decrease is getting smaller, possibly because the temperature is approaching a horizontal asymptote.
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2. The horizontal axis, where temperature is plotted, is conventionally called the x-axis.
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3. The label on the vertical axis is "temperature" and the graph title is "cooling a hot drink ...", so we presume the dependent variable is the temperature of a hot drink.
Given:
The expression is
To find:
The error in Frankie's work.
Solution:
We need to simplify , so
and,
Now,
Therefore, there is error in Frankie's last step. In that step, he did not subtract the mixed fraction correctly.
Answer is 128 cubic inches
(8 min) x ( day/1,440 min) x (20 /day) x (365 da/yr) x (35 yr) =
(8 x 20 x 365 x 35) / (1,440) days =
(2,044,000) / (1,440) days =
1,419-4/9 days = 3.89 years
Rounded to the nearest year: <em>4 years</em>
At a pack a day for 35years, I would have expected more than
4 years' damage. But I've checked my math and haven't found
the mistake, so I'll let that be my answer.
Answer:
x=7/5
Step-by-step explanation:
First you need to get X by itself. You simplify the right side, getting -5, and then subtract 9 from both sides, getting -10x on one side and -14 on the other. Divide both sides by -1, getting 10x=14, divide both sides by 10 which leaves x=14/10. This can be simplified to be 7/5
