12) Answer the following without a calculator and show all working: a) 5 8 − 1 4 b) 1 5 6 + 4 1 3
c) 20 × 3 4
d) 28 ÷ 7 8
e) 3 1 2 ÷ 4 8
f) 2 2 3 × 5 8

13) Erica earns $24.80 per hour. Calculate her wage for 3 1 2 hours work and show working.

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 (%).

What is the measure of ac? 5 units 13 units 26 units 39 units 3x- 2b 6x + 9

Pls never taught i’m really confused and i rlly need