The number of aluminum cans used each year varies directly as the number of people using the cans. if 500 people use 120000 cans in one year, how many cans are used each year in a city which has a population of 130000?

Answer

31,200,000

Explanation

Firstly, calculate the constant of proportionality.

Al ∝ N

Al = kN     Where Al = number of aluminium cans, k = constant and N = number of people using the can.

Al = kN

k = Al/N

  = 120000/500

  = 240

Equation becomes;

Al = 240N

For 130000 cans;

Al = 240 × 130000

   = 31,200,000

the simplified form is

step-by-step explanation:

we want to simplify the expression,

let us change the middle bar to a normal division sign to obtain,

we multiply the first fraction by the reciprocal of the second fraction to obtain,

we factor to obtain,

we cancel the common factors to get,

we simplify to get,

the correct answer is b

the answer is (-8,-5)

step-by-step explanation:

the endpoint to midpoint is half the length. the length is (-2,-1) so when you are at the midpoint just add it to it to find your answer -6+(-2)= -8 and -4+(-1)=-5 so (-8,-5)