2. Let A = {12, 15, 18, 21, 24). What is the cardinality of

set A?...

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Math, 28.10.2019 16:29

Calculate the wavelength of light that has a frequency of 5.2 x [tex]10^{12}[/tex] 1/s . the speed of light is 3 x10^ m/s

Answers: 1

Math, 28.10.2019 17:28

In the figure, p || q. you must prove that ∠4 is supplementary to ∠7. what is the reason for the highlighted statement in the proof?

Answers: 3

Math, 28.10.2019 18:29

Scientific notation 1. physicist measuring the quantity of electric charge in coulombs (c) found that one coulomb is equal to 6.24x10^18 electrons. about how many electrons are there in 10^3 coulombs? 2. r.millikan, a physicist, found out in his oil drop experiment that 1 electron unit (eu) is equal to 1.602x10^-19. how many coulombs are there in 10^5 eu? 3. one mole of water has a mass of 18g and contains about 6.02x10^23 molecules of water. what is the molecule content of 10^2 moles of water? what is it's mass? 4. a light year, the distance light travels in one year is about 9.44,10^12 km. if polaris is about 64 000 000 000km from earth, about how long will it take light from this star to reach earth? (include solutions please)

Answers: 3

Math, 28.10.2019 20:29

There are roses and gumamelas in our yard.the ratio of roses to gumamelas is 5: 4.after picking 5 roses and gumamelas,which i put in a vase,the ratio of the flowers in the yard became even.how many roses and gumamelas were left in our yard?

Answers: 1

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