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igor_vitrenko [27]
2 years ago
7

A radioactive element has a half-life of six days. What is the approximate decay rate of the element after the first day?

Mathematics
2 answers:
s344n2d4d5 [400]2 years ago
3 0

Answer: Good question bc I dont know either

Step-by-step explanation: Im stuck on e2020

                       <u><em>HELP!!!</em></u>

pogonyaev2 years ago
3 0

Answer:    8.3 or C  

Eplanation: This is because a half life is 50 percent of a normal life so 50 percent divided by 6 is 8.3

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The graph of 15x + 7y = 15 is shown on the grid. Which ordered pair is in the solution set of 15x + 7y ≥ 15?
elena55 [62]

Answer:

The correct option is c.

Step-by-step explanation:

The given equation is

15x+7y=15

The given inequality is

15x+7y\geq 15

A point will contained in solution set if the above inequality satisfied by that point.

Check the point (0,-3),

15(0)+7(-3)\geq 15

-21\geq 15

This statement is false, therefore option a is incorrect.

Check the point (-3,0),

15(-3)+7(0)\geq 15

-45\geq 15

This statement is false, therefore option b is incorrect.

Check the point (3,3),

15(3)+7(3)\geq 15

66\geq 15

This statement is true, therefore option c is correct.

Check the point (-3,-3),

15(-3)+7(-3)\geq 15

-66\geq 15

This statement is false, therefore option d is incorrect.

7 0
3 years ago
Sara is making a key chain using the bead design shown. What fraction of the beads in her design are either blue or red? 
klio [65]
You can make a ratio of red to overall colors and then that will give you the fraction, you might have to simplify it
4 0
3 years ago
Mei has 15 oranges, 9 peaches, and 18 pears. She wants to put all of the fruit into decorative baskets. Each basket must have th
son4ous [18]
15,9,8 can be divided by 3
so, the greatest number of fruit in each basket is 3
7 0
2 years ago
Explain how to graph the given piecewise-defined
Pavlova-9 [17]

The Piecewise -Defined function and how it is graphed is given below..

<h3>What is the explanation of how the Piecewise -Defined function is graphed?</h3>

Given the function in the attached image,

  • The Graph of f(x) = -x + 3 is drawn for x less than 2 because x is bounded.
  • The Graph of f(x) = 3 is draw for x greater than and equal to 2 and less than 4 because x is bounded.
  • The Graph of f(x) = 4 - 2x is draw for x greater than equal to 4 because x is bounded.

See the attached Graph for better understanding.

  • f(x) = -x + 3 is coded purple.
  • f(x) = 3 is coded orange.
  • f(x) = 4 - 2x is coded green.

Learn more about Piecewise -Defined function:
brainly.com/question/18859540
#SPJ1

5 0
2 years ago
How do I solve this using elimination?<br><br> 80x + 45y = 645 <br> x + y = 12
sergeinik [125]
X + y = 12  / x (-45);
Then, -45x - 45y = -540;
We have 80x + 45y = 645 and
               -45x - 45y = -540
            ________________
                35x           = 105;
Finally, x = 105÷35;
x = 3;
y = 12 - 3;
y = 9;
7 0
3 years ago
Read 2 more answers
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