5)

The equations are

Simplify.

The values of

6)

The equations are

Simplify.

The values of

7)

The equations are

Simplify.

The values of

8)

The triangle perimeter is

Consider the rightangle triangle is

The length of longest side is 4 cm less than the sum of the length of the other sides.

Let,

Then,

Twice the length of the shortest side is 9 cm more than the difference between the lengths of the other sides.

Let,

Then,

Substitute in

The sum of the shortest lengths of the two sides is

Then

The lengths of each side of the triangle is

9)

Step 1:

Ms.Thompson has one dollar, five dollar, and ten dollar bills.

It totally is

She has the same number of five dollar bills as one dollar, and ten dollar bills put together.

She has bills in all.

Find the how many bills of each denomination does she have.

Consider the Option method.

Totally she has bills and

Solution:

She has totally bills of each denomination is