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DerKrebs [107]
3 years ago
15

he​ half-life of the radioactive element unobtanium dash 43 is 5 seconds. If 80 grams of unobtanium dash 43 are initially​ prese

nt, how many grams are present after 5 ​seconds? 10 ​seconds? 15 ​seconds? 20 ​seconds? 25 ​seconds? The amount left after 5 seconds is nothing grams.
Mathematics
1 answer:
Sati [7]3 years ago
8 0
40, 20, 10, 5, 2.5......
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A teachers desk is 5.5 meters long a students desk is 220 centimeters long what is the difference in the length in centimeters b
Mama L [17]

so if 5.5 is in meter let change it to cm because the question want us to give the answer in cm.

1cm = 0.01meter

to \: turn \: meters \: into \: \\  cm \: we \: have \: to \: multiply \:  by \: 100

now we multiply 5.5 times 100 which is equal to 550.

next we subtract 550 - 220= 330.

finally, the difference between a teacher and student is 330cm .meaning the teacher's desk is 330 cm longer or taller than the student.

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3 years ago
Can someone please help me I need to get this right
andreyandreev [35.5K]

Answer:

Option C

Step-by-step explanation:

Option C would map (1,3) to (-1,4).

(x,y)\rightarrow(x-2,y+1)

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Nadusha1986 [10]

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Step-by-step explanation:

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3 years ago
What is 20% of 50naira?​
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Reflectiion across y=x​
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9514 1404 393

Answer:

  see attached

Step-by-step explanation:

The reflection across y=-x swaps the coordinates and negates both of them. The first-quadrant figure becomes a third-quadrant figure.

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