The world the world population is estimated to be nearly nine billion by the year 2050 what is the estimated population of africa in the year 2050 if it is 20%

The estimated population of Africa in 2050 is 1 billion 8 hundred million .

Step-by-step explanation:

Given as :

The estimated population of world in 2050 = 9,000,000,000

The population of Africa is 20% of world population

Let The estimated population of Africa in 2050 = x

So, According to question

The estimated population of Africa in 2050 = 20 % of estimated population of world in 2050

Or, x = 20 % ×  9,000,000,000

Or, x =  ×  9,000,000,000

Or, x =

∴   x = 1,800,000,000

The estimated population of Africa in 2050 = x = 1,800,000,000

Hence, The estimated population of Africa in 2050 is 1 billion 8 hundred million . Answer

answer: the value should be used for i in the formula of calculation the monthly payment , the interest rate per period is 0.85.

step-by-step explanation:

the given rate of interest i= 85%

in calculating the monthly payment for a loan with an interest rate compounded monthly, the value of the interest rate per period we use in the formula must be in decimal form.

to convert it in decimal, we divide it by 100, we get

hence, the value should be used for i in the formula of calculation the monthly payment , the interest rate per period is 0.85.