If 60 people were asked their favorite color how many people preferred blue when 26% were red ,16%green,30%blue,4%black and 24%yellow

Find an equation of the line perpendicular to the graph of 28x-7y=9 that passes through the point at (4,1)

Si la base de un triángulo isósceles mide 70 m y el ángulo opuesto a ésta mide 58°; entonces ¿cuánto mide la altura de dicho triángulo? a) 21.87 m. b) 40.01 m. c) 43.74 m. d) 63.14 m.

Aquadratic equation in standard from is written ax^2= bx+c, where a,b and c are real numbers and a is not zero?