The diagram shows two joined rectangles. The total area of the compound shape ABCDEF is 36 cm^2. By considering the areas of the two rectangles, show that 2x^2 - 5x - 18 = 0 and hence find the value of length AB.

The value of AB is 9/2 or 4.5

4.5 cm

Step-by-step explanation:

The total area is the sum of areas of two rectangles:

b. x + 1

step-by-step explanation:

i'am smart

rick has $1400 and sally has $1500

step-by-step explanation:

to find amount of money rick has after 10 years :

principal = $1000 , time = 10 years , rate = 4% annually

to find amount of money sally has after 10 years :

her friend gives to pay her $50 per year, therefore money she has after 10 years = 50 × 10 = $500

also, sally gets $1000 after 10 years,

therefore, total amount of money sally has after 10 years = 500 + 1000 = $1500

so, after 10 years : rick has $1400 and sally has $1500