What is -3 divided by -2/5?

Step-by-step explanation:

If any number or fraction is divided by a fraction , we multiply the dividend by the reciprocal of the divisor

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To multiply one fraction by another , multiply the numerators for the numerator , and multiply the denominators for its denominator and reduce the fraction obtained after multiplication into lowest term.

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Divide -15 by -2

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Hope I helped!

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maybe - definition of supplementary angles. im not sure. sorry

step-by-step explanation:

step-by-step explanation:

the original amount doesn't ''re just looking for the time it takes for 1/2 of the substance to we have

(1/2) =)     take the ln   of both sides

ln (1/2)   = )   and we can write

ln(1/2) = ) lne     and lne   = 1     so we have

ln(1/2) = -.1092t     divide both sides by -.1092

t = ln(1/2)/-.1092 = about 6.347 days = about 6.3 days (rounded)