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4 years ago

Help please. . . . . asap

Mathematics

1 answer:

kirill [66]4 years ago

3 0

Answer: Defualt

Step-by-step explanation:Dan

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What happens when the body requires more oxygen?

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Answer:

You breath faster

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3 years ago

Read 2 more answers

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Elodia [21]

Answer:

188,582 fewer people attended the 2010 olympics to the 2006 olympics.

Step-by-step explanation:

Add all of the 2010 matches then subtract from 2006 total. You will get a negative number. Hope I helped!:-)

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4 years ago

A circle has a radius of 1 cm. How does the circumference of the circle compare to the area? Drag and drop a phrase to correctly

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3 years ago

A 1,200g block of phosphorus-32, which has a half life of 14.3 days, is stored for 100.1 days. At the end of this period, how mu

Valentin [98]

Answer:

The amount of phosphorus-32 left after 100.1 days is 9.3 g.

Step-by-step explanation:

Given:

Initial amount of Phosphorus-32 is, $N_0=1200\ g$

Time period of decay is, $t=100.1\ days$

Half life of the block is, $t_{1/2}=14.3\ days$

Now, final amount left is, $N=?$

We know that, the decay equation for a radioactive material is given as:

$N=N_0e^{-kt}\\k\to decay\ constant$

The value of the decay constant is given as:

$k=\frac{\ln 2}{t_{1/2}}\\\\k=\frac{0.693}{14.3}=0.0485$

Now, plug in all the given values and calculate 'N'. This gives,

$N=(1200)e^{(-0.0485\times 100.1)}\\\\N=9.349\approx 9.3\ g$

Therefore, the amount of phosphorus-32 left after 100.1 days is 9.3 g

5 0

3 years ago

Casey has a job doing valet parking. Casey makes an hourly rate of $4.55 per hour plus tips. Last week Casey worked 26 hours and

qaws [65]

The answer is D. $780.25

In this particular case, you just need to find the difference between what Casey earn hourly with his total earning..

The hourly wage that Casey earned in 26 hours:
$ 4.55 x 26 = 118.3

The total amount that casey earned in 26 hours:
$898.55

So, the amount that Casey earned through tips:
$898.55 - $118.3 = $780.25

7 0

3 years ago