The amount of daily time that teenagers spend on a brand A cell phone is normally distributed with a given mean Mu = 2. 5 hr and standard deviation Sigma = 0. 6 hr. What percentage of the teenagers spend more than 3. 1 hr? 5% 10% 16% 32%.

x = 2

step-by-step explanation:

if sr parallel to ba then the sides bc and ac are in proportion, that is

= ← substitute values

= ( cross- multiply )

27x = 6(4x + 1)

27x = 24x + 6 ( subtract 24x from both sides )

3x = 6 ( divide both sides by 3 )

x = 2