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Dennis_Churaev [7]
2 years ago
13

Element X is a radioactive isotope such that every 27 years, its mass decreases by half. Given that the initial mass of a sample

of Element X is 7900 grams, how much of the element would remain after 12 years, to the nearest whole number?
Mathematics
2 answers:
mafiozo [28]2 years ago
6 0

Answer:e

Step-by-step explanation:

Oksi-84 [34.3K]2 years ago
3 0

Answer:

5805

Step-by-step explanation:

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In ∆ABC, m∠ACB = 90°, m∠A = 40°, and D ∈ AB such that CD is perpendicular to side AB. Find m∠DBC and m∠BCD.
podryga [215]

Answer:  ∠B = 50°

               ∠BCD = 40°

<u>Step-by-step explanation:</u>

ACB is a right triangle where ∠A = 40° and ∠C = 90°.

Use the Triangle Sum Theorem for ΔABC to find ∠B:

∠A + ∠B + ∠C = 180°

40° + ∠B + 90° = 180°

         ∠B + 130° = 180°

                  ∠B = 50°

BCD is a right triangle where ∠B = 50° and ∠D = 90°.

Use the Triangle Sum Theorem for ΔBCD to find ∠C:

∠B + ∠C + ∠D = 180°

50° + ∠C + 90° = 180°

         ∠C + 140° = 180°

                  ∠C = 40°

8 0
3 years ago
Use the unit circle to find tan 60°
8_murik_8 [283]

Answer:3

Step-by-step explanation:

5 0
3 years ago
Write a polynomial that has a GCF of 7m and another with a GCF of 2ab squared.
SVEN [57.7K]

The polynomial that has a GCF of 7m is 14mn - 21m + 49m²n + 7mn²

The polynomial that has a GCF of 2ab² is 6a²b² - 8ab³ + 4a³b² + 2a³b³

<h3>Writing Polynomials </h3>

From the question, we are to write a polynomial that has a GCF of 7m

That is,

We are to write a polynomial that has a greatest common factor of 7m

<em>Writing the polynomial</em>

14mn - 21m + 49m²n + 7mn²

The  polynomial above has a greatest common factor of 7m. That is, 7m is the greatest factor that can divide each of the terms

We are to write a polynomial with a GCF of 2ab²

<em />

<em>Writing the polynomial</em>

6a²b² - 8ab³ + 4a³b² + 2a³b³

The polynomial above has a greatest common factor of 2ab². That is, 2ab² is the greatest factor that can divide each of the terms

Hence,

The polynomial that has a GCF of 7m is 14mn - 21m + 49m²n + 7mn²

The polynomial that has a GCF of 2ab² is 6a²b² - 8ab³ + 4a³b² + 2a³b³

Learn more on Writing polynomials here: brainly.com/question/4525973

#SPJ1

7 0
1 year ago
Is 262 a natural number?
MatroZZZ [7]
Yes it is a natural number
3 0
3 years ago
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According to the Marshall’s survey, 80 sixth graders, or 40% of the students in sixth grade like to have school remote. How many
maxonik [38]
200 is the answer i know this because 40%of 200 is 80
8 0
2 years ago
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