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Digiron [165]
3 years ago
13

Need Help with finding half life or doubling time

Mathematics
1 answer:
adell [148]3 years ago
8 0

Answer:

12.2 hours

Step-by-step explanation:

You want to find t such that y = 2·y₀. That is, you want to solve

... 2y₀ = y₀·e^(0.0567t)

Dividing by y₀, you have

... 2 = e^(0.0567t)

and taking the natural log gives ..

... ln(2) = 0.0567t

... ln(2)/0.0567 = t ≈ 12.2248 . . . . divide by the coefficient of t

The doubling time is approximately 12.2 hours.

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Help please help me I really need help please help me
Ber [7]

Answer:

  • x = -3

Step-by-step explanation:

<u>Given function:</u>

  • f(x) = x² + 6x + 2

<u>x-coordinate of the vertex is:</u>

  • x = -b/2a = -6/2 = - 3

<u>The axis of symmetry is the vertical line that passes through the vertex:</u>

  • x = -3 is the line we need

3 0
3 years ago
The perimeter of a regulation singles tennis court is 210 feet and the length is 57 feet less than five times the width.
Marianna [84]

Answer:

Length = 24 and Width = 81

Step-by-step explanation:

Let Width be W

then Length = W-57

Perimeter of rectangle = 2(Length + Width)

=2 (W-57+W)= 210

4W- 114= 210

4W= 324

W= 81

Then Length = 81-57 = 24

4 0
3 years ago
Convert 5820 grams to kilograms.
mr_godi [17]

5.82 Kg

because 1Kg= 1000g

5 0
3 years ago
Which equation results from taking the square root of both sides of (x + 9)2 = 25?
Alex_Xolod [135]

Answer:

√2.37+ 3 √9 = √5. 3 is the last one

x+9 =+25

Step-by-step explanation:

(x+9)2= 25   This means x= 3.5 and the square root of x = √3.5 = 1.87 square root of 9 x 2 = √18 =4.24

We can also see 18+7 =25

√5.65 √5

this is 25 = 5 so it's the last one.

as 2.37+ 3 √9 = √5. 3

6 0
3 years ago
Read 2 more answers
HELP I NEED HELP ASAP
masha68 [24]

Answer:

i think it's c but I'm rly not sure on this one...

3 0
3 years ago
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