Both the side are 21 units. ⇒ It is an isosceles triangle.
---------------------------------------------------- Property of the angles in a triangle: ---------------------------------------------------- Sum of all angles in a triangle = 180°
---------------------------------------------------- Find x: ---------------------------------------------------- x + x + 38 = 180
---------------------------------------------------- Combine like terms: ---------------------------------------------------- 2x + 38 = 180
---------------------------------------------------- Take away 38 from both sides: ---------------------------------------------------- 2x = 142
---------------------------------------------------- Divide by 2 on both sides: ---------------------------------------------------- x = 71
---------------------------------------------------- Answer: x = 71° ----------------------------------------------------
Question 1132387: How many liters of a 10% solution should be mixed with 60L of 25% solution to get 15% solution? = one click in Excel = 120. ANSWER. 120 liters of the 10% solution.
