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Inessa [10]
3 years ago
12

An element with a mass of 120 grams decays by 27.5% per minute. To the nearest tenth of a minute, how long will it be until ther

e are 2 grams of the element remaining?
Mathematics
1 answer:
tangare [24]3 years ago
7 0

Answer:

12.7

Step-by-step explanation:

its right

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kherson [118]
They both equal 1/x.
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Can you help me get the answer for <br> 1/3+1/4<br> plz
Ivahew [28]
7/12 is the answer :)
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Help ASAP
kramer

Answer:

x=19/5

Step-by-step explanation:

x*2+8x=38

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5 0
2 years ago
a collector has 80 jackeys and 125 shirts she wants to maintain ratio in her collection but she needs to sell some of her items
Irina18 [472]

Answer:

25

Step-by-step explanation:

Well, we need to simplify this. we have a ratio of 80:125.

As these numbers end in either 0 or 5, we know they are divisible by 5.

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As we have 16 jackets, we know we must need to sell 25 jackets to maintain the ratio.

8 0
3 years ago
URGENT PLEASE HELP ME, ITS DUE IN A HOUR ​
Olegator [25]

Answer:

Area of gray region = 8x^2+8x-7

Step-by-step explanation:

The area covered by the furniture can be subtracted from the total area of the room to calculate the area of the gray region.

<em>Total</em> area of the room: 13x^2+7x-2

Area taken up by furniture: 5x^2-x+5

Area of gray region = total area of the room - area taken up by furniture

Area of gray region = 13x^2+7x-2-(5x^2-x+5)

Remember to distribute the negative sign:

Area of gray region = 13x^2+7x-2-5x^2+x-5

Combine like terms:

Area of gray region = 8x^2+8x-7

7 0
3 years ago
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