Find the average monthly expenditure: January $898, February $972, March $1,049

Step-by-step explanation:

Average monthly expenditure =

898 + 972 + 1049 = 2919

The true statement is C.) BC = 5 inches

Step-by-step explanation:

i) The given triangle is an equilateral triangle.

ii) it is given that two sides AB and AC are equal. AB = AC  = 5 inches.

  Therefore ∠B = ∠C.

iii) it is given that ∠A = 60°

iv) therefore ∠B = ∠C = (180° - ∠A)÷2 = (180° - 60°)÷2 = 60°

v) therefore all three angles are equal , ∴ ∠A = ∠B = ∠C = 60°

vi) therefore BC = 5 inches is true statement