You sell your bicycle to your friend for 65$ your friend gives you x five dollar bills and y ten dollar bills. There are a total of 9 bills. How many five dollar and ten dollars bills did your friend give you?

There are five dollar bills and ten dollar bills.

Step-by-step explanation:

Given:

Selling price of bicycle .

The friend gave five dollar bills and ten dollar bills.

Total number of bills .

To find: Number of five dollar bills and ten dollar bills the friend gave.

Solution:

The friend gave five dollar bills and ten dollar bills and the friend gave bills in all.

So, .

Selling price of bicycle .

So,

Putting the value of from equation in equation .

Now, putting the value of in equation .

Hence, there are five dollar bills and ten dollar bills.

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

any options?

step-by-step explanation: