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Nikolay [14]
3 years ago
10

Help pleaseeeee ASAP

Mathematics
1 answer:
PIT_PIT [208]3 years ago
5 0
Here, I am not sure, try this.

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An element with mass 780 grams decays by 17.1% per minute. How much of the element is remaining after 19 minutes, to the nearest
VikaD [51]

Answer:

  22.1 grams

Step-by-step explanation:

At the end of each minute, (1 -17.1%) = 82.9% of the element remains. At the end of 19 minutes, the quantity has been multiplied by that value 19 times, so the remaining amount is ...

   (780 g)(0.829^19) ≈ 22.1 g

After 19 minutes 22.1 grams remain.

3 0
2 years ago
write a ratio for the following description: for every 6 cups of flour in bread recipe, there are 2 cups of milk
Darya [45]
The ratio To your question is 6 to 2
5 0
2 years ago
How much time is needed for $600 to accumulate $72 in simple interest at a rate of 4%
Andru [333]

Answer:

4% of 600 is 24.

72/24=3

3 (idk what your unit is) years, months, weeks, etc.

4 0
3 years ago
7. Determine the measures of the two angles that are not 90° in the diagram below. Show your
nekit [7.7K]

First we need to assume that the sum of the angles is also 180°. if one is less than 90°, the other will be more. we can do this because in a plane 4-sided polygon the sum of the inner angles will always be 360°, and we already know the two angles on the right side

so we can say that:

3x + 20 + x = 180

Since we got only one variable in this equation, we can already solve for x.

4x + 20 = 180

4x = 160

x = 40

the lower left angle is just 40°

the upper left is three times that plus 20, so it's 160°

hope this helps you to get the method

4 0
3 years ago
Find the 65th term of a arithmetic sequence -10,-8,-6,-4......
Masja [62]
-69 is the answer i think
8 0
3 years ago
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