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fiasKO [112]
2 years ago
14

An element with a mass of 890 grams decays by 19.7% per minute. To the nearest tenth of a minute, how long will it be until ther

e are 220 grams of the element remaining?
Mathematics
2 answers:
Schach [20]2 years ago
6 0

Answer:

3 minutes

Step-by-step explanation:

vlabodo [156]2 years ago
5 0

Answer:

6.4

Step-by-step explanation:

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How do you use an equation to model and solve a real-world problem?
Xelga [282]
Here's an example sally went to the store and got 13 apples when she got home her family ate 3 of the apples sally decides to go back to the store and get 5 more apples and when she returns home 3 more apples are gonna how many apples does sally have? the equation would be 13-3+5-3=12 so she has 12 apples and this represents the real world
7 0
3 years ago
Find all the missing angles:
siniylev [52]

Step-by-step explanation:

this is the answer in the picture

6 0
2 years ago
Oliver climbed 222 meters of a steep mountain reach the summit. He then rappelled down the other side of the mountain to return
nikdorinn [45]
B -222

Because he fell/descended 222 meters. And falling or going down produces a negative integer. Also, if you were actually doing the math to try to find where Oliver is currently located, you wouldn't add 222, or 0, or subtract -444. You would subtract 222. 

In addition, be aware that the question is asking you an integer to represent a situation, not the answer of where Oliver is. 

6 0
2 years ago
if you multiply the number by 2 and add 4, then result you get will be the same as three times the number decreased by 7.​
liraira [26]

Answer:

Step-by-step explanation:

Let the number be x,

2x+4 = 3x-7

Collect like terms

2x-3x= -4-7

-x =. -11

Multiply both sides by -1

x. =. 11

PLEASE MARK BRAINLIEST.

5 0
2 years ago
There are 12,000 people attending a concert. They announce that 20% of the people that purchased tickets did not come to the con
Marysya12 [62]

Answer:

15,000

Step-by-step explanation:

20% of 15,000 is 3,000. 15,000-3,000=12,000

8 0
2 years ago
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