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2 years ago

What percentage of students earning degrees in 2009 were awarded a professional degree?

Mathematics

2 answers:

Svet_ta [14]2 years ago

7 0

Answer:

B.) 2.87

Step-by-step explanation:

Marginal Totals: 3,204

Professional Marginal Totals: 92

92 is what percent of 3,204

2.871410736579276

It says to round, so:

B.) 2.87

Also, I think the other guy just accidentally typed 0 instead of 8, making 2.07.

shusha [124]2 years ago

6 0

Answer:

2.07%

Step-by-step explanation:

92 out of a total of 3,204 graduates earned a professional degree. That works out to 0.0207, or 2.07%.

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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

2 years ago

What is the solution to the following inequality 14 < - 7x

olchik [2.2K]

Answer:

-2 > x

Step-by-step explanation:

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3 years ago

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Prove using the notion of without loss of generality that 5x 5y is an odd integer when x and y are integers of opposite parity.

kap26 [50]

The expression is
5x + 5y
We are to prove that it is an odd integer when x and y are integers of opposite parity
First, we can assume
x = 2a (even)
y = 2b + 1(odd)
subsituting
10(a + b) + 5
5 [(2(a + b) + 1]
The term
2(a + b) + 1 is odd and the result of an odd number multiplied by an odd number is odd

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3 years ago

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juin [17]

Answer:

The last one

Step-by-step explanation:

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2 years ago

kirza4 [7]

Answer:

12+k/5

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2 years ago