Workings/calculations 2.1.1
121
3
8
Х
144
27
2.1.2 -19 +(-6)-(-25)
2.1.3
5(-2+5)
[7-2(1+3)]
2.1.4 (V-27 - V8 )(5) + 25
2.1.5 73 -(-3)(-3)
2.2
Determine a number that lies exactly half way between the two given
numbers on the a number line: -2,4 and 1,7
GRAND TOTAL​

4should be the last one n=4

Answer: d. 39 cmin the diagram, the approximate length of the minor arc de is 39 centimetres.step-by-step explanation: the formula for the length of an arc in a circle is as displayed below.let the length of the minor arc de = xx = 2( pi )r × angle of sector / 360°from this, we will substitute the values given from the problem into the formula to obtain the length of the minor arc de.x = 2( pi )r × angle of sector / 360°r = radius = 25cmpi as an approximate value = 3.14angle of sector = 120°x = 2( 3.14 )( 25 ) × 120° / 360°x = 157 × 1 / 4x = 39.25x = 39 ( rounded to the nearest whole number as an approximate value )