3 years ago

Please help me will Mark you down as brainlest!

Mathematics

1 answer:

BaLLatris [955]3 years ago

6 0

Answer:

p=0.15 p'=0.24 Option D

Step-by-step explanation:

You might be interested in

The radioactive element americium-241 has a half-life of 432 years. How many years will it take a 10 gram mass of americium-241

geniusboy [140]

<h2>Answer: 816 years</h2>

This problem can be solved using the <u>Radioactive Half Life Formula: </u>

<u />

$A=A_{o}.2^{\frac{-t}{h}}$ (1)

Where:

$A=2.7g$ is the final amount of the material

$A_{o}=10g$ is the initial amount of the material

$t$ is the time elapsed (the quantity we are asked to find)

$h=432y$ is the half life of americium-241

Knowing this, let's find $t$ from (1):

$2.7g=(10g).2^{\frac{-t}{432y}}$

$\frac{2.7g}{10g}=2^{\frac{-t}{432y}}$

$0.27g=2^{\frac{-t}{432y}}$

Applying natural logarithm in both sides:

$ln(0.27g)=ln(2^{\frac{-t}{432y}})$

$-1.309=-\frac{t}{432y}ln(2)$

$-t=\frac{(-1.309)(432y)}{0.693}$

<u></u>

<u>Finally:</u>

$t=816y$

3 0

3 years ago

Does anyone want to be my math tutor? :( have a month left before the semester ends and my grade in math is very low so If anyon

Inga [223]

Answer:

what grade yo.u in

Step-by-step explanation:

8 0

3 years ago

At Gwen's Beading Boutique, there are 54 plastic beads and 18 metal beads on clearance. What percentage of the beads on clearanc

ale4655 [162]

54+18=72

54/72=75%

75% is also 3/4 or .75

4 0

3 years ago

Read 2 more answers

Aplica la operación de números enteros que corresponda:

ElenaW [278]

148+35=183

80+(-53)=27

(-125) x (-42)=5250

7 0

2 years ago

Given the function f (x) = x2 – 52, find f (x - 3) f (x – 3)

Setler [38]

6 Why because my brain is huge

5 0

3 years ago

Read 2 more answers

Please help me will Mark you down as brainlest!​

Please help me will Mark you down as brainlest!