The life of a cell phone battery is a normal distribution with a mean of 10.5 hours and a standard deviation of one hour. The bought you got for your birthday is in the 84th percentile in terms of its battery life. How many hours does your phone’s battery last?

a.12.5
b.13.5
c.11.5
d.9.5

answer: the answer is (b) amie should have multiplied

step-by-step explanation: given a sphere and a cylinder with same radius and height.

let, 'r' be the radius of the cylinder and sphere and 'h' be the height of the cylinder. according to the question,

r = h.

now, the volume of the sphere will be

and the volume of the cylinder will be

therefore, we have

thus, ammie should have multiplied the volume of the sphere

its 50 miles away from the starting point

the one below it is a function

graph #4 (last graph) depict the function   f(x)= -m(x-d)^1/5 i

step-by-step explanation:

we know that

m=slope

but in this function slope is -m that means slope is decreasing and it is decreasing by 1/5 points down the x-axis.

which is shown in graph four

a decreasing slope down x-axis by 1/5 points.

hence 4th graph is the right option for this.