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almond37 [142]
3 years ago
11

Suppose an isotope has a half-life of 10 years. If you start with 50 grams of the isotope, how much of it will you have in 10 ye

ars?
50 grams
25 grams
12.5 grams
6.25 grams
Mathematics
1 answer:
Goshia [24]3 years ago
5 0
The half life of a decaying substance is defined as the time at which the substance decreases to one-half of its original value. In this case, given  hlf-life of 10 years and an original mass of 50 grams, after 10 years, the isotope mass becomes 50*0.5 or 25 grams. Answer is B.
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Which number produces a rational number when added to 0.5
Sladkaya [172]

Any number that you can completely write down on paper using digits ... and a fraction bar or decimal point if necessary ... is a rational number.  If you add it to 0.5, then the sum is another rational number.

5 0
3 years ago
Find the volume of the figure below. Leave answer in terms of t. Round to the nearest hundredth if necessary.
Vinil7 [7]

Answer:

36π

Step-by-step explanation:

d= 6 in

r= d/2=6/2= 3 in

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8 0
3 years ago
If their is 300 unicorns and 200 dragons and 50 dragons fly away then 30 unicorns walk away how many are of each left?
Lilit [14]

Answer:

If 30 unicorns out of 300 walk away then it will be 300-30=270 unicorns left.

If 50 dragons fly away out of 200 then it will be 200-50=150.

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7 0
3 years ago
I need so much help!!!!
USPshnik [31]

<em>Answer:</em>

94.25m

<em>Explanation:</em>

\frac{3cm}{4.5m} × \frac{19.5}{x}

Solve for x.

(cross multiply & divide)

4.5 × 19.5 = 282.75

282.75 ÷ 3 = 94.25

4 0
4 years ago
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