Question

Two sides of a regular quadrilateral measure (3x – 40) cm and 2(x + 5) cm
respectively. Find the length of each side.
A. 45cm B. 110cm C. 115cm D. 125cm
with explanation pls:)

Answer 1

Answer:

Step-by-step explanation:

Sum of opposite side of quadrilateral = 180

$\dashrightarrow\rm (3x - 40)+2(x+5)=180$

$\dashrightarrow \rm 3x-40 +2x+10=180$

$\dashrightarrow \rm 5x -(4 0 -10) = 180$

$\dashrightarrow \rm 5x+30=180$

$\dashrightarrow\rm 5x = 180+30$

$\dashrightarrow\rm 5x = 210$

$\dashrightarrow\rm x=42$

Now

Sides are

3(42) - 40

126 - 40

86 cm

2(42 + 5)

2(47)

94 cm