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3 years ago

Question 7. K(7/4) equals ?

Mathematics

1 answer:

dusya [7]3 years ago

3 0

Unless K is defined, this problem doesn’t make sense...even if we divide over k then k would eventually equal nothing (not zero)

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The amount in kilograms, a, of a radioactive element that remains after t hours can be modeled by the equation a= 0.65(0.92)to t

elena-14-01-66 [18.8K]

Answer:

The rate of decrease is 8%

Step-by-step explanation:

we know that

The general equation for the radioactive decay can be written as:

$a=a_0(1-r)^t$

where

a is the amount in kilograms after time t.

a_0 is the original amount of the substance or y-intercept of the function

r is the decay rate, written in decimals.

t is the time

In this problem we have

$a=0.65(0.92)^t$

$a_0=0.65\\(1-r)=0.92$

solve for r

$r=1-0.92=0.08$

Convert to percentage

$0.08(100)=8\%$

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vlada-n [284]

Answer:

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Step-by-step explanation:

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alukav5142 [94]

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Step-by-step explanation:

0.15 divided by 4 = 0.0375

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Maya deposits $5000 into a checking account that pays 0.75% annual interest compounded monthly. What will be the balance after 8

Nana76 [90]

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Step-by-step explanation:

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