Which shows the repeated multiplication for 9³? a 9 • 9 • 9 b 9 • 9 • 9 • 3 c 3 • 3 • 3 • 3 • 3 • 3 • 3 • 3 • 3 d 9 • 3

its A. because the exponent which in this case is 3, is multiplied 3 times. so 9 is multiplied 9 times

A. because 9 is being multiplied 3 times by itself

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)

5.25 ounces

step-by-step explanation:

divided 3/4 and 6