<u>Part 1)</u> we have
------> equation A

------> equation B
Substitute the equation B in equation A
![5[12-3y]+2y=16](https://tex.z-dn.net/?f=5%5B12-3y%5D%2B2y%3D16)



Find the value of x
the best approximation is the point 
therefore
<u>the answer Part 1) is the option C</u>

<u>Part 2) </u>we have
------> equation A
------> equation B
equate equation A and equation B



Find the value of y
the solution is the point 
therefore
<u>the answer Part 2) is </u>


Write three ratios equal to 

This ratio can be represented as 
_______________________________

_______________________________
_______________________________

Equivalent/Equal ratios<em> - Definition of Equivalent Ratio A ratio can be represented as a fraction. The concept of an equivalent ratio is similar to the concept of equivalent fractions. A ratio that we get either by multiplying or dividing by the same number, other than zero, to the antecedent and the consequent of a ratio is called an equivalent ratio.</em>
Answer:
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Answer:
Step-by-step explanation:
Answer:
Data
Equation 25x² + 64y² = 1600
Process
1.- Divide all the equation by 1600
25x²/1600 + 64y²/ 1600 = 1600/1600
-Simplify
x²/64 + y²/ 25 = 1
2.- Equation of a horizontal ellipse
3.- Find a, b and c
a² = 64 a = 8
b² = 25 b = 5
-Calculate c with the Pythagorean theorem
a² = b² + c²
-Solve for c
c² = a² - b²
-Substitution
c² = 8² - 5²
-Simplification
c² = 64 - 25
c² = 39
-Result
c = √13
4.- Find the center
C = (0, 0)
5.- Find the vertices
V1 = (-8, 0) V2 = (8, 0)
6.- Find the foci
F1 = (-√13, 0) F2 = (√13, 0)
I hope this helps you
x^2-5x-6
x -6
x +1
(x-6)(x+1)
x^2+5x-6
x +6
x -1
(x+6)(x-1)