8.4 Examples Math 9

That means all sides of A add up and equal all sides of B But lets make our life easier… …half way around A is equal to half way around B This means that

3x - 4 + (1. 4x + 2) = 8 – 2. 6x + (5 + 2x) 4. 4x – 2 = 13 – 0. 6x + 0 3x - 4 + (1.4x + 2) = 8 – 2.6x + (5 + 2x) 4.4x – 2 = 13 – 0.6x + 0.6x +0.6x 5x - 2 = 13 +2 +2 5x = 15 ÷5 ÷5 X = 3 But we are not asked to solve for x

Dimensions of A 1.4(3) + 2 =6.2 3(3) -4 = 5 6.2 x 5 B A Dimensions of A 1.4(3) + 2 =6.2 3(3) -4 = 5 6.2 x 5 Dimensions of B 5 + 2(3) = 11 8 – 2.6(3) = 0.2 11 x 0.2

Now try #4 with your partner The first step is to multiply both sides by 4 and then simplify Next step is to distribute numbers into the brackets Now combine all numbers Get k to appear only on one side You should be able to complete the rest yourself Answer is -3/2 or -1.5

Now onto the Warm up