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7nadin3 [17]
3 years ago
13

What's the sum of 86.703 + 12.197​

Mathematics
2 answers:
sasho [114]3 years ago
7 0

Answer:

98.9

Step-by-step explanation:

86.703 + 12.197​ = 98.9

Ira Lisetskai [31]3 years ago
5 0
98.9 thats what i got
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'Polonium-210 is a radioactive substance with a half-life of 138 days. If a nuclear
Tatiana [17]

Answer:

  • <u>59.0891 g (rounded to 4 decimal places)</u>

Explanation:

<em>Half-life time</em> of a radioactive substance is the time for half of the substance to decay.

Thus, the amount of the radioactive substance that remains after a number n of half-lives is given by:

  • A=A_0\cdot (1/2)^n

Where:

  • A is the amount that remains of the substance after n half-lives have elapses, and
  • A₀ is the starting amount of the substance.

In this problem, you have that the half-live for your sample (polonium-210) is 138 days and the number of days elapsed is 330 days. Thus, the number of half-lives elapsed is:

  • 330 days / 138 days = 2.3913

Therefore, the amount of polonium-210 that will be left in 330 days is:

  • A=310{g}\cdot (1/2)^{2.3913}=59.0891g
5 0
2 years ago
In the expression -12+m-9m+13, name the coefficients​
torisob [31]

Answer:

-12

1

9

13

Step-by-step explanation:

its just the numbers in front of the variables

4 0
3 years ago
Read 2 more answers
If your starting salary is 40,000 and you receive a 3% increase at the end of every year, what is the total amount, in dollars,
Molodets [167]

Answer:

$64188.26

Step-by-step explanation:

→ Calculate the increase in decimal multiplier

( 100 + 3 ) ÷ 100 = 1.03

→ Multiply this by the salary raised to the power of 16

40000 × ( 1.03 )¹⁶

→ Solve

$64188.26

5 0
2 years ago
What is the equation that represents the line
KiRa [710]

Answer:

The equation of a line is typically written as y=mx+b where m is the slope and b is the y-intercept.

Step-by-step explanation:

5 0
3 years ago
If -48 equals 6(a) then a is what<br>​
Oksi-84 [34.3K]

<h2><u>PLEASE MARK BRAINLIEST!</u></h2>

<em>Expression:</em>

\frac{-48}{6}=\frac{6}{6}a

 -8 = a

Your answer is -8.

I hope this helps!

8 0
3 years ago
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