12. Sonya wants to sew ribbon along each side of a square pillow. If the pillow has an area of 144 square inches, how much ribbon must she buy to have the exact amount that she needs?

5. Raul's hamster's house sits in the corner of its cage as shown in the diagram. The area around the house is 5 inches wide. Write an expression, in factored form, that represents the area around the house.

2. (10б) Будут ли вектора \( \vec{c} \) и \( \vec{d} \) ортогональны, если \( \vec{a}=(-2,4,1), \quad \vec{b}=(1,-2,7), \quad \vec{c}=5 \vec{a}+3 \vec{b}, \quad \vec{d}=2 \vec{a}-\vec{b} \). Постройте вектора \( \vec{c} \) и \( \vec{d} \).

Encuentra el área del triangulo formado por los puntos A( \( -1,5),(-6,2),(1,-2) \) Encuentra la pendiente \( y \) angulo de inclinación de la recta formad

Si el area del oaralelogramo de la siguiente figura es de \( 120 \mathrm{~cm}^{2} \). Hoyar el valor de \( x \) ( \( \frac{1}{\mathrm{xcm}} \) \( (x+2) \mathrm{cm} \)

Find the slope \( m \) of the line through the following pair of points and draw the line through the points. \( (3,-1),(-2,-2) \) Answer exactly. \( m= \)