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3 years ago

Dr. evans just started an experiment. He will collect data for 7 days. How many hours is this?

Mathematics

2 answers:

Zina [86]3 years ago

8 0

7days•24hours=168 total hours
i hope this helps!

Serhud [2]3 years ago

5 0

Answer:

168 hours

Step-by-step explanation:

Since there are 24 hours in 1 day, and he collected data for 7 days, then you have to multiply 7 by 24. 7 times 24=168. So the answer would be 168 hours.

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If f(x)=3x+2,find f(f^-1(14)).

lisov135 [29]

Answer: 14

<u>Step-by-step explanation:</u>

f(x) = 3x + 2

To find f⁻¹, swap the x's and y's and solve for y --> Note: f(x) is y

x = 3y + 2

x - 2 = 3y

$\dfrac{x-2}{3}=y$

$\implies f^{-1}(x)=\dfrac{x-2}{3}$

$\implies f^{-1}(14)=\dfrac{14-2}{3}$

$\implies f^{-1}(14)=\dfrac{12}{3}$

$\implies f^{-1}(14)=4$

f(f⁻¹(14)) = f(4)

f(4) = 3(4) + 2

= 12 + 2

= 14

NOTE: the simplified version is .... f and f⁻¹ cancel out, leaving you with 14

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3 years ago

50 x 10⁴ what dose that equal

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Answer:

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Step-by-step explanation:

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jek_recluse [69]

Answer:

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Nutka1998 [239]

Answer:

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Step-by-step explanation:

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2 years ago

The land area of a country is about 5.0 million square miles, and the population is about 600 million people. What is the avera

podryga [215]

Answer:

120 people/sq. mile

Step-by-step explanation:

Population Density is the concept of how "crowdy" a place is. The more the population density, the more crowded that place is.

The population density is found by dividing the "number of people" by the "land area" (in sq mile or sq km).

Here, it is given there are 600 million people, so

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Land Area = 5,000,000 sq. miles

Hence,

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