Guidelines suggest that children and adolescents get a minimum of 60 minutes of physical activity daily. Findings suggest the actual daily amount of physical activity of boys aged 14-18 receive is normally distributed with a mean of 45 minutes and a standard deviation of 15 minutes. What percent of boys get less than 30 minutes of exercise daily

for this case we must apply distributive property to the following expression:

the distributive property states that:

then, when applying the property we have to multiply the -2 for each term within the parenthesis:

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: