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denpristay [2]
3 years ago
10

Josh just finished building a dog house.now he wants to put carpet on the floor of the doghouse.josh measured the perimeter of t

he floor at 122 inches.if the width measurement of the floor is 25 inches,how many square feet of carpet does Josh need to cover the entire floor.if carpet costs 12.00 how much will Josh have to spend
Mathematics
1 answer:
kari74 [83]3 years ago
7 0
900ft squared. $10,800
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Aleonysh [2.5K]

This problem can be represented through the following equation

A = A₀(1/2)^t/h

where

A----------->  is the amount of substance left after time t

A₀ ----------> is the original amount---------> 2 g

h------------->  is the half-life-----------> 8 days

for A=0.04 g

t=?

0.04 = 2(1/2)^t/8

0.02 = (1/2)^t/8

Take ln on both sides:

ln(0.02) = ln [(1/2)^t/8]

ln(0.02) = (t/8)(ln 1/2)

t = 8*ln(0.02)/ln(1/2)

t = 45.15 days

the answer is 45.15 days

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2 years ago
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S_A_V [24]
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3 years ago
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Kipish [7]

Answer:

Step-by-step explanation:

x²+7x-11=-5x+6

x²+7x+5x-11-6=0

x²+12x-17=0

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2 years ago
Find the slope of (-2, 5) &amp; (2, 13)<br><br> HELPPPOO
MrMuchimi

Answer:

The slope is 2.

Step-by-step explanation:

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