0.005 is 1/10 the value of what number

.05

Step-by-step explanation:

1/10 means one decimal place.

If it is 1/10 of a number, just delete a decimal place.

.05

Check answer.

.05 / 10 = .005

the discriminant is 64 + 4*1*12 = 112

this is prime.

step-by-step explanation:

ending amount = beginning amount / (2^n)

where "n" = number of half-lives (or elapsed time / half-life)

ending amount = 50 mg / (2 ^10 / 5.3)

ending amount = 50 mg / (2 ^ 1.8867924528)

ending amount = 50 m / 3.6981210597

ending amount = 13.5203794557 mg

or about 13.5 mg remain

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