After special medicine is introduced into a peril dish full of bacteria, the number of bacteria remaining in the dish decreases
rapidly. The relationship between the elapsed time t, in seconds, and the number of bacteria, N(t), in the Petri dish is modeled by the following function:
N(t)=50,000•(0.5) t/4.3
The Petri dish loses %50 of bacteria every ____ seconds
N(t)=50,000•(0.5) t/4.3
The Petri dish loses %50 of bacteria every ____ seconds
2 answers:
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Answer:
The Amount invested at 7% interest is $12,855
The Amount invested at 6% interest = $1,102
Step-by-step explanation:
Given as :
The Total money invested = $13,957
Let The money invested at 7% = = $A
And The money invested at 6% = = $13957 - $A
Let The interest earn at 7% =
And The interest earn at 6% =
-
= $833.73
Let The time period = 1 year
Now,<u> From Simple Interest method</u>
Simple Interest =
Or, =
Or, =
And
=
Or, =
∵ -
= $833.73
So, -
= $833.73
Or, 7 A - 6 (13,957 - A) = $833.73 × 100
Or, 7 A - $83,742 + 6 A = $83373
Or, 13 A = $83373 + $83742
Or, 13 A = $167,115
∴ A =
i.e A = $12,855
So, The Amount invested at 7% interest = A = $12,855
And The Amount invested at 6% interest = ($13,957 - A) = $13,957 - $12,855
I.e The Amount invested at 6% interest = $1,102
Hence,The Amount invested at 7% interest is $12,855
And The Amount invested at 6% interest = $1,102 . Answer