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Oksanka [162]
4 years ago
11

Help with these questions? Thanks

Mathematics
1 answer:
Aleks [24]4 years ago
3 0
Well, I'll answer this problem:
<span>mercury-197 has a half life of about 64 hours. After 288 hours about how many miligrams of a 750mg sample

According to this site:
http://www.1728.org/halflife.htm

Ending Amount = Beginning amount / 2^n
where "n" is the number of half-lives (elapsed time / half-life)

</span>"n" =288 / 64 = 4.5
<span>Ending Amount = 750 mg / 2^4.5
</span>Ending Amount = 750 mg / <span><span>22.627416998 </span>
</span>Ending Amount = <span><span><span>33.146 mg
Answer is 33 milligrams


</span></span></span>
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C
a linear function has a consistent pattern and C has no consistencies, therefore it’s C, the rest are linear :)
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3 years ago
A minor arc has a measure of 135 degree. If the corresponding major arc is divided into 5 equal parts, what is the measure of ea
pychu [463]
If they are a minor then thats illegal…they should wait until they can legally give consent
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3 years ago
A scale drawing of a square object has a scale of 1 in. : 5 mm. The scale drawing has a length of 2.5 inches. Find the perimeter
luda_lava [24]

Answer:

Perimeter and area of drawing

Perimeter= 10 In

Area = 6.25 In²

Perimeter and area of object

Perimeter = 51.836 mm

Area = 167.936 mm²

Step-by-step explanation:

We are dealing with a square object, so let's talk about the drawing first.

The length of one side = 2.5 In

Perimeter of square= 4L

Perimeter = 4*2.5

Perimeter= 10 In

Area = L*L

Area = 2.5*2.5

Area = 6.25 In²

Letd note that 1 inch =

25.4 millimetres

So 2.5 Inch = 2.5 * 25.4

2.5 In = 63.5 mm.

25.4 mm is to 5mm

63.5 mm is to (63.5*5)/24.5

63.5mm is to 12.959 mm

So the length of actual object is 12.959mm

The perimeter = 4*12.959

Perimeter = 51.836 mm

Area = 12.959²

Area = 167.936 mm²

7 0
3 years ago
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Which type of transformation maps triangle GFH onto triangle G'F'H'?
lions [1.4K]

Answer:

rotation

Step-by-step explanation:

5 0
4 years ago
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James is making a presentation about how to pick the right kind of pet. Which image would BEST Support
maria [59]

Answer:

C. A chart displaying the amount of care pets require.

Step-by-step explanation:

(A). A picture of common house pets.

This wouldn't be effective since everyone knows what most common house pets look like.

(B). A picture of common pet supplies.

This wouldn't be effective since pet supplies vary with every animal.

(C). A chart displaying the amount of care pets require.

This would be the best choice since the image would show the required necessities for each different pet.

(D). A chart displaying which pets are the most popular.

This wouldn't be effective since popularity is mostly based on preference.

7 0
3 years ago
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