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Firlakuza [10]
3 years ago
15

on friday morning, the temperature dropped 2 degrees per hour for four hours.write and solve an equation to find the total numbe

r of degrees d the temperature dropped on Friday morning
Mathematics
2 answers:
marusya05 [52]3 years ago
7 0
Minus 2 degrees every hour 
there are 4 hours
d=degrees dropped
- 2 x 4 = d
nikklg [1K]3 years ago
6 0

Answer: The temperature dropped 8 degrees.

Step-by-step explanation:

The initial temperature was T0, and each hour the temperature dropped by 2°, for 4 hours.

So we can write the temperature as a function of time in the next way:

T(t) = T0 - (2°/h)*t

where t is the number of hours since the temperature started to drop.

The temperature drop for four hours, so we have that the final temperature is:

T(4h) = T0 - (2*4)°= T0 - 8°

then we can calculate the difference between the final and initial temperature as:

T(4h) - T(0h) = T0 - 8° - T0 = -8°

This means that in Friday morning the temperature dropped by 8 degrees.

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Answer:

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Step-by-step explanation:

Confidence interval can be defined as a range of values so defined that there is a specified probability that the value of a parameter lies within it.

The confidence interval of a statistical data can be written as.

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Therefore, the 90% confidence interval (a,b) = ( $61,689.27, $69,012.73)

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