National income (ni) is the sum of the incomes that all individuals in an economy earn in the forms of wages, interest, rents, and profits. it excludes government transfer payments and is calculated before any deductions are taken for income taxes. during the period 1994-2004, the ni of australia grew about 5.2% per year, measured in 2003 u. s. dollars. in 1994, the ni was $4 billion.
assuming this rate of growth continues, what will the ni of australia be (in billions) in the year 2020?

answer: a

step-by-step explanation:

overpriced

step-by-step explanation:

hello!

to begin with, we're given that on earth, a rock weighs 20 pounds, and while on jupiter, that same rock weighs 42 pounds. now, we're trying to find the weight of a rock that weighs 10.5 pounds on earth, on jupiter.

to solve this, first, set up a proportion, cross-multiply, and solve it algebraically.

setting up the proportion is the hardest and the most confusing part of the problem, but it's simple.

if on earth, the rock weighs 20 lbs, and on jupiter it weighs 42 lbs, our first part of our proportion is 20/42 lbs. the second part has to be equal to each other. this means that 10.5 has to be on the numerator of the fraction, and x, the value we're trying to find, has to be on the denominator. remember that the rock weighs 10.5 lbs on earth, and we're trying to find the weight of it on jupiter (which is x).

20/42 = 10.5/x

next, you would cross-multiply.

20x = 42(10.5)

20x = 441

now, solve it algebraically by using division.

x = 22.05 lbs

this can be rounded to 22.1 lbs.

therefore, the weight of the rock on jupiter is 22.1 lbs, the fourth choice.

answer: a. 40 sq. units

step-by-step explanation:

pretty simple, since the rectangle is 80 and the triangle is half of it, divide by 2. you'll get 40 afterwards.

hope it ; d.