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Tanya [424]
2 years ago
8

You have 40 grams of a radioactive kind of tellurium. If it's half life is 9 hours, how much will be left after 18 hours

Mathematics
1 answer:
AlexFokin [52]2 years ago
7 0

Answer:

10 grams

Step-by-step explanation:

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Mr. Design is covering rectangular pieces of plywood with fabric to create a wall hanging. Each piece has an area of 12 3/4 squa
ExtremeBDS [4]

6 inches 
6 1/14 inches  
Since area is defined as length multiplied by width, this is a simple matter of division. I suspect this problem is more a matter of handling fractions, so to make things easier, convert the fractions to improper fractions in order to do the math, then convert to proper fractions after you've gotten the result. Since the area of each rectangle is 12 3/4, multiply 12 by 4 and then add 3 to get 51/4 as the area. Doing the same for the values 2 1/8 and 2 1/10 gives sizes of 17/8 and 21/10 for the widths respectively. So 
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3 0
3 years ago
1
tester [92]

Answer:

B. 4.5

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54 feet into inches is 4.5

4 0
3 years ago
K + 4(5k +6) = - 123 <br> HELP ASAP
Anni [7]

Answer:

-7

Step-by-step explanation:

-123-(6x4=24)=-147      -147 divided by (4x5k+1k=21k)=-7

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2 years ago
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