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3 years ago

Which of the following relations is a function?

Mathematics

2 answers:

Alexandra [31]3 years ago

7 0

The last one represents a function:)

ale4655 [162]3 years ago

5 0

Answer:

{(5, –4), (–4, 5), (–5, 4), (4, –5)}

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If 8 pounds of bananas cost $3.68, what is the cost per pound?

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Answer:0.46

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3.68 divided by 8 = 0.46

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Step-by-step explanation:

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3 years ago

If a radioactive isotope has a half-life of 6 hours and 12 milligrams is initially present, how much will

Serhud [2]

Answer:0.75 milligrams will be present in 24 hours

Step-by-step explanation:

Step 1

The formula for radioactive decay can be written as

N(t)=No (1/2)^(t/t 1/2)

where

No= The amount of the radioactive substance at time=0=milligrams

t 1/2= the half-life= 6 hours

t=24 hours

N(t) = the amount at time t

Step 2--- Solving

N(t)=No (1/2)^(t/t 1/2)

=N(t)=12 x ( 1/2) ^ (24/6)

= 12 x (1/2) ^4

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= 0.75 milligrams

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3 years ago

I need HELP PLZZZZ THIS IS DUE AT 7:00

valkas [14]

Answer:

27.5

Step-by-step explanation:

1.5(5)+20=27.5

:) hope its right :)

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