Answer:
Step-by-step explanation:
Let x be the amount at 5%
Then 2200 - x is the amount at 3%
<u>The total interest is:</u>
- 0.05x + (2200 - x)*0.03 = 78.50
- 5x + (2200 - x)*3 = 7850
- 5x + 6600 - 3x = 7850
- 2x = 7850 - 6600
- 2x = 1250
- x = 625
<u>Find the amount at 3%:</u>
Answer:
x could equal 7
Step-by-step explanation:
7-2 is five minus 3 is 2 and 2 is less than 5
They don't need to be pure real or imaginary. Any "mixed" complex number works so long as .
Let . Then
so .
The geometric interpretation is essentially identical. is a complex number twice the distance away from the origin in the complex plane as , which is exactly .
We have that
x+4y<12
y<3
using a graph tool
see the attached figure
the solution in the attached figure
The answer is around 10.22 mph