The formula of a perimeter of a rectangle l × w:
P = 2l + 2w
We have the perimeter P = 76 cm and the length l = 20 cm. Substitute:
76 = 2(20) + 2w
76 = 40 + 2w <em>subtract 40 from both sides</em>
36 = 2w <em>divide both sides by 2</em>
18 = w
Answer: width = 18 cm.
Answer:
The answer is (x+4)
Step-by-step explanation:
Just write the expression as a product with the factor x and 4
x²+2×x×4+4+16
then write the number in the exponential form with an exponent of 2
x²+2×x×4+4²
then use a² +2ab +b² = (a+b)² yo factor the expression which you get (x+4)
I don’t understand either ♂️
