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timurjin [86]
3 years ago
7

The half-life of a radioactive kind of

Mathematics
2 answers:
Savatey [412]3 years ago
8 0

Answer:

Every 30 years you'll have half left

After 30 years = 900 grams

after 60 years 450 grams

Step-by-step explanation:

Bad White [126]3 years ago
8 0

Answer:

450 gm...this is because we start with 1800/2 = 900 = 30 and 900/2 =450 = 60 yrs. = 450 gm

Step-by-step explanation:

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a cylinder has a base diameter of 16 inches and a height of 7 inches. What is its volume in cubic inches
lilavasa [31]

Answer:

224

Step-by-step explanation:

i think you would do 16 X 2 and then times that by 7 which would give the answer as 224

6 0
2 years ago
Edger needs 6 cookies and 2 brownies for every 4 plates how many cookies and brownies does he need for 10 plates
evablogger [386]

Answer:

Edger needs 15 cookies and 5 brownies.

Step-By-Step:

6 + 6 + 3 = 15

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6 0
2 years ago
From end zone to end zone, a football field is 120 yards long. How long is the
timofeeve [1]

Answer:

120x3 = 360

Step-by-step explanation:

4 0
2 years ago
The table shows a student's proof of the quotient rule for logarithms.
nikklg [1K]

Answer:

The error is at step (3) .

The correct step (3) will be,

\log_{b}(\frac {b^{x}}{b^{y}})

= \log_{b}(b^{x - y})   [by using the laws of indices]

All other steps are correct.

Step-by-step explanation:

The error is at the step (3) , because the student has tried to prove the quotient rule of logarithms by using the property i.e., 'The quotient rule of logarithm' itself , i.e. ,by  assuming the property does hold before proving it. So, the proof is fallacious.

The correct step (3) will be,

\log_{b}(\frac {b^{x}}{b^{y}})

= \log_{b}(b^{x - y})   [by using the laws of indices]

All other steps are correct.

5 0
3 years ago
What is 4725 devided by 30
lana [24]
4725 devided by 30 is 4725 / 30 = 157.5 ;

6 0
3 years ago
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