In the folowwing diagram, AB = 17.5m, DC = 19.6m, BDC = 27° and DCA = 90° 17.5 m
B
J270
19-6 m
Diagram not drawn to scale.
Calculate the size of ADC

exa:

)

3+11

14

step-by-step explanation:

from this example, we can see that subtracting with integers is the same as adding the opposite. we can solve using a number line or by using the saying "keep, change, change" to us solve. it is important to remember that we can subtract a negative and end up with a larger number than we started with.

i would say true? if the unit was informational and it "refreshed your understanding", then true.