Paolo is building a brick wall. So far, the wall has five layers of the bricks. Each brick is 7.5cm high. The layers of mortar between the bricks are 15mm tick. a) Work out the total heigh of the wall, in centimetres.
b) How many more layers of bricks does Paolo need, for the wall to reach a total height of 0.7 m? (I uploaded a picture of the bricks)

In triangle △abc, ∠abc=90°, bh is an altitude. find the missing lengths. ah=4 and hc=1, find bh.

Acompany manufactures large valves, packed in boxes. a shipment consists of 1500 valves packed in 75 boxes. each box has the outer dimensions 1.2 x 0.8 x 1.6 m and the inner dimensions 1.19 x 0.79 x 1.59 m. the boxes are loaded on a vehicle (truck + trailer). the available capacity in the vehicle combination is 140 m3. each valve has a volume of 0.06 m3. - calculate the load factor on the box level (%). - calculate the load factor on the vehicle level (%). - calculate the overall load factor (%).

Afamily went out to dinner and their bill was $113.if they want to leave a 19% tip, how much should they leave.