3 years ago

Carbon-11 has a half-life of about 20 minutes. If we start with 200 grams, how much will be left after 3 hours?

Mathematics

1 answer:

nata0808 [166]3 years ago

4 0

Answer:

0.39

Step-by-step explanation:

Hope it is helpful....

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Help me out with this question (geometry)

Usimov [2.4K]

Answer:

Step-by-step explanation:

∠UST=2 m∠2

10x+10=2(6x-1)

10x+10=12x-2

12x-10x=10+2

2x=12

x=6

m∠UST=10×6+10=70°

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2 years ago

If f(x) = V7x + 31 , find f(0).

Arte-miy333 [17]

Answer:

f(0) = 31

Step-by-step explanation:

We are given the following function:

$f(x) = \sqrt{7x} + 31$

f(0).

This is the value of f when $x = 0$ . So

$f(0) = \sqrt{7*0} + 31 = \sqrt{0} + 31 = 0 + 31 = 31$

So f(0) = 31

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2 years ago

Write a numerical expression for the verbal expression.

dmitriy555 [2]

Step-by-step explanation:

The numerical expression is:

(36 + 14) / (2 * 5).

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2 years ago

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How do you solve k/2+9=30

Mrrafil [7]

If you would like to solve the equation k / 2 + 9 = 30, you can calculate this using the following steps:

k / 2 + 9 = 30
k / 2 = 30 - 9
k / 2 = 21 /*2
k = 21 * 2
k = 42

The result is 42.

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3 years ago

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If 20 minutes from now the time will be 12 noon what time was it 30 minutes ago

EastWind [94]

11:10am

20 minutes before 12 noon is 11:40am
30 minutes before 11:40am is 11:10am

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2 years ago