1)Put the sign < (less than ) or the > (greater than ) sign between the integers below:(5 marks) -5 +4 b) 0 -3

c) -13 -12 d) -177 +77 e) -5 5

2) Write in order from least to greatest : ( 2marks)
-55, -983, -118, -34, 0

3) Write in order from greatest to least.( 2 marks)
1, -11 ,10, -9, 17, 0

4) Draw number lines to work out the answers for : (8 marks)
-7 + 10 b) -8 -1 c) -5 + 5 d) -2+7 -6+5 - 10

5) Work out without using number lines: (8 marks)

-133 + 132

-250 + 360

-44 - 33 - 15

-30 + 12 -12 + 20 - 16 + 11 - 45

Astick 2 m long is placed vertically at point b. the top of the stick is in line with the top of a tree as seen from point a, which is 3 m from the stick and 30 m from the tree. how tall is the tree?

Ascientist wants to use a model to present the results of his detailed scientific investigation. why would a model be useful? a )because the model makes the concepts easier to understand b) because the model is easy to put together and to use c) because the model prevents other scientists from asking questions d) because the model requires the audience to pay full attention to it i don't know what to choose because between a and d a is much more likely than d because it only wants to get the attention of the audience. i'm confuse.

2x + 3y = 17 5x + 6y = 32 usibg method if elimination