Of all the students in a school, 2/9 and no of them are in sixth grade. a. How many sixth graders are there if the school has 90 students?

b. How many sixth graders are there if the school has 27 students?

c. If the school has x students, select the expression for the number of students in the school in terms of x.

d. How many students are in the school if 42 of them are sixth graders?

Consider the following estimates from the early 2010s of shares of income to each group. country poorest 40% next 30% richest 30% bolivia 10 25 65 chile 10 20 70 uruguay 20 30 50 1.) using the 4-point curved line drawing tool, plot the lorenz curve for bolivia. properly label your curve. 2.) using the 4-point curved line drawing tool, plot the lorenz curve for uruguay. properly label your curve.

Solve the triangle. a = 21°, c = 105°, c = 5

Ineed with question three. i don't understand how i'm supposed to achieve 3 marks.