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AlladinOne [14]
3 years ago
13

A Radioactive material has a half-life of 18.4 days. After 55.2 days, there were 177 mg of the material. What mass of the materi

al was originally present?
Mathematics
1 answer:
saveliy_v [14]3 years ago
8 0
1416 mg or 1.416 g ...................
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$925 at 2% interest for 2.4 years. Find the simple interest earned.
mixer [17]

Answer:

£43

Step-by-step explanation:

925×2/100

=£ 18.5

2.4 years =18.5×2.4

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5 0
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A cheetah can run at its top speed for about 25 seconds. Complete the table to represent a cheetah running at a constant speed.
olchik [2.2K]

Answer:

Cheetahs can go from 0 to 60 miles per hour in just 3.4 seconds and reach a top speed of 70 miles per hour. While they are the fastest land animal in the world, they can only maintain their speed for only 20 to 30 seconds.

Step-by-step explanation:

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3 years ago
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If the temperature starts at 40 degrees and DECREASES 40 degrees, what will the temperature be?
Lena [83]

Answer:

<u>0℃</u>

Step-by-step explanation:

40 degrees- 40 degrees = 0 degrees

thus the temperature will be <u>0℃</u>

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5 0
2 years ago
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Which of the following is a factor of (x+y)³-(x+y)³
IgorC [24]

▬▬▬▬▬▬▬▬▬▬▬▬▬▬

<h3>Answer :</h3>

The factor of (x + y)³- (x³ + y³) is <u>3xy</u>

<h3>Step By Step Solution :</h3>

→ (x + y)³- (x³ + y³)

→ (x + y) - (x + y)(x² - xy + y²) [Using identity a³ + b³ = (a + b)(a²- ab+ b²)]

→ (x + y)(x² + y² + 2xy - x² + xy - y²)[Using identity, (a + b)² = (a² + b²+ 2ab)]

→ (x + y) (3xy)

→ 3xy

∴ Option d. 3xy is correct!

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3 years ago
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yarga [219]

Answer:

67.38

Step-by-step explanation:

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4 years ago
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