A) A ratio system
B) The 4 lb peanuts and the 1 lb mixture because the 4lb added to the 1lb of mixture give the correct percentages.
Answer:
Equation is 
where 
denotes number of cups of orange juice needed by Sam.
Step-by-step explanation:
Let denotes number of cups of orange juice needed by Sam.
Number of cups needed to make punch 
Number of cups with Sam 
Therefore,
Answer:
D.) Right
Explanation:
A.) An obtuse triangle is where one of the internal angles is obtuse (greater than 90 degrees).
B.) An acute triangle is a triangle with three acute angles (less than 90°).
C.) A right triangle is where one of its interior angles is a right angle (90 degrees).
D.) An equiangular triangle is a triangle where all three interior angles are equal in measure.
