Question 5 unsaved factor the 4 term polynomial using grouping: 20xy - 4y + 35x - 7 question 5 options:
(4y + 7)(5x - 1)
(4y - 7)(5x + 1)
(4y + 1)(5x - 7)
(4y - 1)(5x + 7)

Consider the expression Group first two terms and second two terms:

In first brackets the common factor is and in second brackets the common factor is

Then

correct choice is A.

56.6

step-by-step explanation:

the ratio of the perimeters is equal to the scale.

the ratio of the areas is equal to the square of the scale.

34 / 20 = k

a / 19.6 = k²

substituting:

a / 19.6 = (34 / 20)²

a = 19.6 (34 / 20)²

a ≈ 56.6

step-by-step explanation:

4227473658779875563886538705958641728563470543621287463824132573847969p05749365273847906970680574936214