Union membership R28 Pension fund 7,5 % of gross salary R10.00 UIF contribution Medical aid : % of total medical aid subscription fee due as shown below Ms Ntlebi medical aid membership subscription cost Gross monthly salary RO - R9 000 R9001 -R11 500 More than R11 500 Main member Wife/ partner Each child R1 345 R890 R475 R1 449 R974 R519 R1 643 R1 066 R559 1.1.1. Calculate her annual salary. 1.2.2. Calculate her monthly pension fund contribution ba 1.2.3. Determine her annual UIF contribution.​

step-by-step explanation:

(b) 240

step-by-step explanation:

first, we use the pythagorean formula using the given side lengths to find x. then we use x to find the side lengths. then we add the side lengths to find the perimeter.

pythagorean theorem formula:

a^2 + b^2 = c^2

(x - 20)^2 + (x - 40)^2 = x^2

x^2 - 40x + 400 + x^2 - 80x + 1600 = x^2

x^2 -120x + 2000 = 0

(x - 100)(x - 20) = 0

x - 100 = 0 or x - 20 = 0

x = 100 or x = 20

we see that the solution x = 20 must be discarded because it will give a negative side length and a side length of 0. the only valid solution is x = 100.

perimeter = sum of the lengths of the sides

perimeter = x + x - 20 + x - 40

perimeter = 3x - 60

replace x with 100.

perimeter = 3(100) - 60

perimeter = 300 - 60

perimeter = 240