What is the measure of angle c?

50 degrees

Step-by-step explanation:

Interior angle sum of a triangle is 180 degrees.

let's call <c, x

x+53+77=180

x+130=180

x=50

i think its a and d

step-by-step explanation:

given : the shape of his satellite can be modeled by   where x and y are modeled in inches.

now,the given equation   is a equation of parabola.

here, coefficient of x is positive, hence the parabola opens rightwards.

on comparing this equation with standard equation , we get

in standard equation, coordinates of focus=(0,m)

thus for given equation coordinates of focus=(0,1.5)

step-by-step explanation: