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Rus_ich [418]
2 years ago
14

DON'T FORGET TO SIMPLIFY PLSSS!!!!!!

Mathematics
1 answer:
Bad White [126]2 years ago
5 0

Answer:

16692162

Step-by-step explanation:

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In four years, 40% of a radioactive element decays. Find its half-life. Round to one decimal place.
White raven [17]

To find the answer, use k = \frac{2.303 }{ 4} (log\frac {100 }{ 40}) , and then use the equation t=\frac{.693}{k} To find it's half life.

5 0
3 years ago
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8) A pyramid has a rectangluar base with length 12 km and width of 5 km. If the volume is 200
SashulF [63]

Hi there!

\large\boxed{h = 10km}

We know that the equation for the volume of a pyramid is:

V = 1/3(bh)

We know that:

V = 200 km³

b = 12 × 5 = 60 km²

We can plug these into the equation:

200 = 1/3(60)(h)

Simplify:

200 = 20h

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2 years ago
What does a obtuse angle look like .
Soloha48 [4]

Answer:

An obtuse angle is more than 90°. We know that a 90° angle, also known as a right angle, is in the shape of an "L".

So, an obtuse angle looks wider than an "L".

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8 0
3 years ago
Karen took out a loan for $725 with a 2.5% interest rate that is compounded annually. No additional money will be deposited or w
Serga [27]

Answer:

$29

Step-by-step explanation:

You divide 2.5 by 100 the you multiply that by 725 and sense its months it would be converted to 1.6 so you multiply 725 1.6 and the answer to 2.5 divide by 100

4 0
3 years ago
The price of pakets of tea ir same as the price of 4 paket.How many packets of tea ate required to exchange 20 packets of coffee
Veronika [31]

Answer:

The answer I got was 16 if your using addition, but 5 if using multiplication

Step-by-step explanation:

5 0
2 years ago
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