Answer:
59.44%
Step-by-step explanation:
<em>
</em>
<em>
</em>
<em>Where 
= mass remaining</em>
<em>
=original mass.</em>
<em>t= time </em>
<em>
=half life</em>
=1599, t= 1200, =226, =?
n= 0.750469
=134.3367amu
percentage of mass remaining = 
*100%
= 59.44%
The number of hours that helena need to work to generate 165 dollars is
33 hours.
Helena has to work hours to earn $165. 33
Algebraic equations are equations with
unknown variables. The alphabet letters are used to represent algebraic equations.
Total $33.00 in her 6 hours she worked.
This question should find out how long it takes her to earn her $165.00 in that job.
let x hours be required work hours to earn $165.00 ..
This can be expressed in algebraic equations as:
x= 6× 165/33
x= 990/33
x= 30
Hence, helna have to work thirty hours to earn $165.00 ..
To learn more about Work time problem solving, refer:
brainly.com/question/15447610
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I personally think it is <span>f(t) = 17.5 sin (π/4)(-t+6) + 17.5 </span>
Answer:
i think a.... sorry if im wrong
Step-by-step explanation:
<u>Answer:</u>
To solve this, we need to first evaluate the given expression. We can do that by simplifying the contents of each bracket, starting with the innermost one:
[4-5{1-(4-3+1)}]
⇒ [4 - 5{1 - (2)}]
⇒ [4 - 5{-1}]
⇒ 4 - (-5)
⇒ 4 + 5
⇒ 9
Now we can calculate what 9 out of 100 is:
9 of 100 = 
⇒ 9%
