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Ksivusya [100]
3 years ago
13

A 33 gram sample of a substance that's

Mathematics
1 answer:
Mazyrski [523]3 years ago
6 0

9514 1404 393

Answer:

  6.2

Step-by-step explanation:

We presume your "k-value" is the k in the exponential decay term ...

  e^(-kt) . . . where t is the number of time units

This is 1/2 when ...

  ln(1/2) = -kt

  t = ln(1/2)/(-k) = ln(2)/k

  t = 0.69315/0.1124 ≈ 6.2

The half life is about 6.2 time units.

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The English Alphabet has 20 letters more than one-fourth the number of letters in the Greek Alphabet. The English Alphabet has 2
KengaRu [80]

we are given that the English Aplhabet has 26 letters. we let g represent the number of letters in the Greek alphabet. From the statement given, English alphabet which is 26 = 20 + 1/4 *g. The expression which is similar to this is in option A. 1/4g + 20 = 26.

5 0
4 years ago
The figure shows a carpeted room. How many square feet of the room is carpeted?
alukav5142 [94]

Answer:

40

Step-by-step explanation:

So split it into two shapes. Two rectangles.

Rectangle 1 = 4 * 5 = 20

Rectangle 2 = 2 * 10 = 20

20 + 20 = 40

6 0
3 years ago
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Ratling [72]
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7 0
3 years ago
An obtuse angle in the figure is_____
Vesna [10]

The obtuse angel is ∠AOC. This is obtuse because it is larger then 90 degrees

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4 0
4 years ago
Read 2 more answers
Lucy kicks a shuttlecock into the air from a height of 0.6 feet
SpyIntel [72]

Answer:

4.6 feet

Step-by-step explanation:

The equation is:

h=-16t^2+vt+s

Where

v is initial velocity (given as 16)

s is initial height (given as 0.6)

Substituting, we can write:

h=-16t^2+16t+0.6

This is a quadratic equation of the general form:  at^2+bt+c

Which we can conclude the coefficients to be:

a = -16

b = 16

c = 0.6

The max height occurs at the value:  t=-\frac{b}{2a}

So, max height occurs at:

t=-\frac{16}{2(-16)}\\t=0.5

We will get the max height if we put  t = 0.5  into the original equation. So that would be:

h=-16t^2+16t+0.6\\h=-16(0.5)^2+16(0.5)+0.6\\h=4.6

Max Height = 4.6 feet   (occurs at t = 0.5 seconds)

8 0
4 years ago
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