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Tatiana [17]
2 years ago
5

Find the slope of the line through each pair of points. (- 12, 20 ). ( 15 ,- 12)

Mathematics
1 answer:
gtnhenbr [62]2 years ago
6 0

Answer:

-32/27

Step-by-step explanation:

-12 - 20       -32            -32

----------- = ----------- = ----------

15 - (-12)    15 + 12         27

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Staals half
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half lives are normally written in years
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A=P( \frac{1}{2})^ \frac{t}{h}
A=final amount
P=initila amount
t=time elapsed
h=time half life is (same units as time)

let's use days as the units of time


we are given
initial amount=1gram
final amount=0.3gram
time=4 days

so
0.3=1( \frac{1}{2})^ \frac{4}{h}
solve for h
0.3=( \frac{1}{2})^ \frac{4}{h}
take the ln of both sides
ln(0.3)=ln( \frac{1}{2})^ \frac{4}{h}
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times both sides by h
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3 sig figs
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6 0
3 years ago
Please help me quick ASAP!!!!!! Help me with all the questions!!!!!!!!
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Y = 3x + 4
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3 years ago
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