Answer:
Easiest and fastest way is to graph both equations into a graphing calc and trace the graph to where they intersect.
Alternatively, you can use substitution to solve for your answer.
Step-by-step explanation:
Answer:
D
Step-by-step explanation:
If it is a right triangle, by pythagorous theorem, 39^2 = 36^2 + 15^2
or, 36^2 + 15^2 - 39^2 = 0
5x^2-4x+1 + -3x^2+x-3= 2x^2-3x-2
Answer:
cups of pineapple juice .
Step-by-step explanation:
Equation of direct proportion between x and y:

As per given,
Let x = quantity of pineapple juice and y = quantity of orange juice.
,
, 
Put these values in an equation we get

Hence, he needs
cups of pineapple juice .