¿Cuáles de los siguientes pares de razones cumplen con ser una proporción? (1pto.) a) 2 : 3 y 8 : 6
b) 4 : 3 y 5 : 4
c) 7 : 4 y 4 : 7 Respuesta = ?
d) 9 : 3 y 3 : 1

1.- La razón entre la edad de un padre y su hijo es 8 : 3. Si el padre tiene 40 años, ¿cuántos años tiene el hijo? (1pto.)
respuesta : ?

Which term best describes the association between variables a and b? no association a negative linear association a positive linear association a nonlinear association a scatterplot with an x axis labeled, variable a from zero to ten in increments of two and the y axis labeled, variable b from zero to one hundred forty in increments of twenty with fifteen points in a positive trend.

Which best explains why this triangle is or is not a right triangle?

Statement reason 1. δabc is similar to δced. given 2. 3. definition of slope 4. slope of slope of definition of slope 5. slope of × slope of multiplying the slopes 6. slope of × slope of substitution property of equality 7. slope of × slope of simplifying the right side the table contains the proof of the relationship between the slopes of two perpendicular lines. what is the reason for statement 2? a. parallel line segments that meet a common perpendicular line are proportional in length. b. the lengths of vertical and horizontal sides in congruent triangles are in a common ratio. c. trigonometric identities determine the lengths of the legs in a right triangle. d. corresponding side lengths in similar triangles are proportional in length.