Answer:
X=17 degree
Step-by-step explanation:
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That is the same as multiplying by 3
I would say identity because:
6.8- 4.2b=5.6b-3
6.8=9.8b-3
9.8=9.8b
The sum of $3,000 was invested at 7.3% whereas $8,000 was invested at 10.7%
What is the annual income of each investment?
The annual income of each investment is determined as the amount invested multiplied by interest rate and time of investment
I=PRT
I=annual income=$1075
P=x at 7.3%, 11000-x at 10.7%
R=7.3%and 10.7%
T=1 year
I at 7.3%=x*7.3%*1
I at 7.3%=0.073x
I at 10.7%=(11000-x)*10.7%*1
I at 10.7%=1177-0.107x
annual income=0.073x+1177-0.107x
1075=1177-0.034X
0.034X=1177-1075
0.034x=102
x=102/0.034
x=$3,000
11000-x=11000-3000
11000-x=8000
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Answer:
Step-by-step explanation:
Take natural log of both sides:
Use power rule of logarithms:
Let's differentiate.
I applied chain rule on the left side and I apply constant multiple rule to the right side.
Let's multiply both sides by 
:
We started with so let's make that replacement:
Let's simplify it a bit:
