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Bad White [126]
3 years ago
13

Which point is located at -7.75−7.75minus, 7, point, 75?

Mathematics
1 answer:
rosijanka [135]3 years ago
3 0
Cccccccccccccccccccc
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A 30 gram sample of a substance that's used to sterilize surgical instruments has a k-value of 0.1235. Find the substances half
jok3333 [9.3K]

Answer : The substances half life in days is, 5.6 days.

Step-by-step explanation :

Half life : It is defined as the amount of time taken by a radioactive material to decay to half of its original value.

All radioactive decays follow first order kinetics.

The relation between the half-life and rate constant is:

k=\frac{0.693}{t_{1/2}}

where,

k = rate constant = 0.1235 per days

t_{1/2} = half-life

Now put all the given values in the above formula, we get:

0.1235\text {days}^{-1}=\frac{0.693}{t_{1/2}}

t_{1/2}=5.6\text{ days}

Thus, the substances half life in days is, 5.6 days.

5 0
3 years ago
Find the arc measure of AB.<br> The measure of arc AB = ______ degrees
mariarad [96]
The picture is difficult to read, but it looks like
  ∠ADB = 2x²
  ∠ACB = 10x
These two angles have equal measure, so you have
  2x² = 10x
  2x(x -5) = 0 . . . . . subtract 10x and factor
  x = 0, or x = 5

The measure of arc AB is twice the measure of either inscribed angle, so would be
  arc AB = 2×10x
  = 2×10×5
  = 100 . . . . . degrees

Arc AB is 100°.
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3 years ago
Covert 53.4 to a mixed number
Slav-nsk [51]
53.4 = 53 4/10 = 53 2/5
5 0
3 years ago
given the following linear function sketch the graph of the function and find the domain and range f(x) =2/7x-2
Semenov [28]
Hope this helps. Domain and range are the same for this question. 

7 0
3 years ago
Read 2 more answers
What is the vertex of f(x)=x^2+12x=31
Ket [755]

Answer:

x

=

±

√

5

−

6

Decimal Form:

x

=

−

3.76393202

…

,

−

8.23606797

…

Step-by-step explanation:

3 0
2 years ago
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