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andre [41]
1 year ago
10

One of the radioactive isotopes used in chemical and medical research is iodine-125, which has a half-life of 61 days. how long

would it take for 0.25 g to remain of a 1.00 g sample of iodine-125?
Mathematics
1 answer:
Oksana_A [137]1 year ago
5 0

Answer:122 days

Step-by-step explanation:

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Write the equation of a line that contains (2,−2) and perpendicular to another line with slope −1. (20 POINTS)
Kay [80]
Y=mx+b or -2=-1 x 2+b, b= -2(-1)(2) b=0

Therefore the equation of the line is

y=-1x
8 0
2 years ago
3 times the sum of 1/3 of a number and 8 is 11
Bumek [7]
3(1/3x + 8) = 11
x + 24 = 11
x = 11 - 24
x = - 13
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3 years ago
Equivalent to 4^7•4^-5
nekit [7.7K]

Answer:

<h2>16</h2>

Step-by-step explanation:

\text{Use}\ a^n\cdot a^m=a^{n+m}\\\\4^7\cdot4^{-5}=4^{7+(-5)}=4^{7-5}=4^2=4\cdot4=16

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3 years ago
The product of 6 and 11 written as an algebraic expression
docker41 [41]

Answer:

(2×3)¹

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Step-by-step explanation:

2×3=6 so 2 to the power 1 is 2 and 3 to the power 1 is 3 so 2×3=6

11×1=11 so 11 to the power 1 is 11 and 1 to the power 1 is 1 so 11×1 =11

3 0
2 years ago
The first terms of a geometric sequence are 0.778,-2.33,7,-21, and 63. What is the 6th term?
aliya0001 [1]

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-189

Step-by-step explanation:

If you continue the pattern by multiplying the term by -3, you will eventually get -189 as the 6th term

3 0
3 years ago
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