Question

SOMEONE PLSLPLSSLSLS HELP ITS JUST 3 QUESTIONS BRO PLEASE ITS SO CONFUSING ILL BRAINLIST.


The length and width of a rectangle is 3x + 4 and x + 3 respectively.

a) write the perimeter of the rectangle in simplified form.

b) find the perimeter of the rectangle if x = 5.

c) the area of a rectangle is given by the formula area = length x width. Find the area of this rectangle when x = 4.

Answer 1

Step-by-step explanation:

a) Perimeter is equal to 2w + 2L

2(3x + 4) + 2(x + 3)

6x + 8 + 2x + 6

8x + 14

b) Put 5 in x's place

8×5 + 14

40 + 14

54

c) Area = (3x + 4) * (x + 3)

Put 4 in x's place

(3×4 + 4) * (4 + 3)

12 + 4 * 7

16 * 7

112