Answer:
There are 2,000 grams left after 300 years.
Step-by-step explanation:
Giving the following information:
The half-life of a radioactive substance is 200 years. There are 8000 grams of the substance initially.
<u>First, we need to calculate the reduction of the substance each year:</u>
Yearly reduction= 8,000/400= 20 grams per year
<u>Now, for 300 years:</u>
300 year reduction= 20*300= 6,000
There are 2,000 grams left after 300 years.
Answer: The number is: "2" .
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The expression is: 2 − (½)x = (½)<span>x ;
</span>→<span> in which "x" is the "unknown number".
</span>_______________________________________________________
Explanation:
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Given:
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"Two decreased by a half of a number is one-half<span> of the number" ;
Let "x" represent the "unknown number" for which we wish to solve;
Write the expression as:
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" </span>2 − (½)x = (½)x " .
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Note: Add "(½)x" to EACH SIDE of the equation:
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2 − (½)x + (½)x = (½)x + (<span>½)</span>x ;
to get:
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→ 2 = 1x ;
↔ 1x = 2 ;
↔ x = 2 .
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Answer: The number is: " 2 " .
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Answer:
Alonzo scored 25 points. Miguel scored 29 points.
Step-by-step explanation:
25 plus 25 is 50. Plus 4 is 54.
Answer:
In this particular case, Circle M has circumference 11π, or approximately 34.6 units.
Step-by-step explanation:
The circumference of a circle of diameter d is C = πd.
In this particular case, Circle M has circumference 11π, or approximately 34.6 units.
Answer:
$114.46
Step-by-step explanation:
40.51+73.95=114.46
