Sally would like to decorate her window-sill in her kitchen with mosaic tiles. The mosaic tiles are \( 20 \mathrm{~cm} \times 20 \mathrm{~cm} \) and cost R6,20 per centimetre. Calculate the cost of tiling her window-sill with mosaic tiles, if her window-sill measures 720 mm .

Una piedra A con masa mucho mayor que una segunda piedra B, se suelta junto a B desde e reposo ya la misma altura respecto del piso (ignorar la resistencia del aire). ¿Qué se pued

Landon is in the business of manufacturing phones. He must pay a daily fixed cost to rent the building and equipment, and also pays a cost per phone produced for materials and labor. The labor and materials cost \( \$ 75 \) for each phone manufactured, and the total cost of producing 4 phones in a day would be \( \$ 1200 \). Write an equation for \( C \), in terms of \( p \), representing total cos in dollars, of producing \( p \) phones in a given day. Answer Attempt 1 out of 2 Submit Answer

Calcula la energla mecínica de un saltador de longitud de 75 kg de mase, cuando está en el aire a \( 2,5 \mathrm{~m} \) sobre el suelo y con una velocidad de \( 9 \mathrm{~m} / \mathrm{s} \).

Draw a line segment \( \mathrm{AB}=6.8 \mathrm{~cm} \). Take any point P outside it. Using ruler and compasses draw a line through P parallel to AB .

8. Graph the solution set of the inequality. \[ 5 x-1<9 \text { or } 3 x+5>11 \]