Its b= -0.2 or b= 1/-5 whichever one works best
Not sure for (b)
Step-by-step explanation:
(a)55+80+x=180 (angles inside the triangle)
135+×=+180
x=180-135
x=45
The factor of 12 is 1, 2 , 3 , 4 , 6 , 12
Hope it helps.
Answer:
There are loads, but for example you can find the diagonal from a lamppost the the end of its shadow if you know the height of the post and the length of the shadow.
Hope I helped x