First question: Sandra mixed green paint and blue paint in the ratio 5 : 3 for a painting job. (a) If she used 15 litres of blue paint, how many litres of green paint did she use?
(b) If she made 56 litres of paint for painting job, how many litres of blue paint did she use?

second question: Lin Lin saved Ks. 50000 and Htoo Htoo saved Ks. 25000 .
(a) Find the ratio of Htoo Htoo's saving to Lin Lin's saving.
(b) What fraction of Lin Lin's saving is Htoo Htoo's saving?

the system of inequity is

step-by-step explanation:

from the given graph it is noticed that we have two related lines. one is solid and another is dashed.

if a line passing through two points, then the equation of line is

the solid line passing through the points (0,4) and (4,0).

the related equation of solid line is .

similarly, find the related equation of dashed line. the dashed liune passing through the points (0,0) and (3,1).

the related equation of dashed line is

from the given graph it is noticed that the point (0,1) lies on the shaded region, therefore the point (0,1) must be satisfied by the related equations.

check the related equations by the point (0,1).

this statement is true if the sign of inequality is < instead of equality. since it is an solid line therefore the sign of inequality will be . the required inequality is

similarly, check the second related equation.

it is a dashed line, so this statement is true if the sign of inequality is > . the required inequality is

the equation cos(35) =a/25 can be used to find the length of bc what is the length of bc? round to the nearest tenth

step-by-step explanation:

0.02040816326