Identify the property that justifies the statement. ∠DEF ≅ ∠DEF Substitution property Substitution property Transitive property of congruence Transitive property of congruence Reflexive property of congruence Reflexive property of congruence Symmetric property of congruence Symmetric property of congruence

Astudent received the following grades last semester. find the student's semester grade point average. an a is algebra (3 credits), a b in history ( 3 credits), a in sociology ( 3 credits) a d in english ( 3credits) and a c in seminar ( 2credits). an a is worth 4 points, a b is worth 3 points a c is worth 2 points and a d is worth 1 point.

Prove that 3: 8 is equivalent to 12: 32.a. use diagrams to support your answer.

Estimate the area under the curve f(x) = 16 - x^2 from x = 0 to x = 3 by using three inscribed (under the curve) rectangles. answer to the nearest integer.