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zubka84 [21]
3 years ago
8

Half - life is

Mathematics
1 answer:
Aleonysh [2.5K]3 years ago
8 0

Answer:

the amount of time it takes for approximately 50% of a radioactive atom sample to undergo nuclear decay

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What is the best approximation of the area of a circle with a diameter of 17 meters? Use 3.14 to approximate pi. 53.4 m² 106.8 m
Arte-miy333 [17]
R = 17/2 =8.5 m
A = 3.14 x (8.5)^2
A = 3.14 x 72.25
A = 226.865

answer <span>226.9 m² (third choice)</span>

8 0
3 years ago
Please anyone help me with this please!!?​
Nataly [62]

Answer:

I think it's (-3, 1)

Hope this helps! :)

7 0
3 years ago
What is the exact solution of cos (17pi/6)?
kolbaska11 [484]
<span>The exact solution of cos (17</span>π<span>/6) is as follows:

First change the angle into degrees.

17(</span>π/6) (180°/π) = 510°

Then we calculate the cosine of the angle above and it as follows:

cos 510° = -(√3)/2

Hope this answers the question. Have a nice day.
4 0
3 years ago
Can someone please help me with my math asap​
Margarita [4]

Answer:

A) 15x - 12

General Formulas and Concepts:

<u>Pre-Algebra</u>

  • Distributive Property

<u>Algebra I</u>

  • Combining Like Terms

Step-by-step explanation:

<u>Step 1: Define</u>

5x(3 - 12x) - 3(4 - 20x²)

<u>Step 2: Simplify</u>

  1. Distribute:                         15x - 60x² - 12 + 60x²
  2. Combine like terms:         15x - 12
8 0
3 years ago
What is the solution to the linear equation? = -12 + 3b - 1 =-5 - b​
zalisa [80]

Answer:

b =  2

Step-by-step explanation:

hope it works

4 0
3 years ago
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