Answer:
a=14
Step-by-step explanation:
-a+28=14
So -a=-14
so a=14
Answer:
4cm^2
Step-by-step explanation:
First we need to find the length of the height of the triangle using Pythagoras:
a^2+b^2=c^2 (Substitute in what we have)
a^2+3√2(^2)=2√5(^2) = a^2 + 18 = 20 -> 20-18=2 √2=BD
Now we can find the area:
AD+DC= 3√2 + √2 = 4√2 x √2 = 8/2 = 4
Justin's statement would be the best. In order to change 3/5 into 6/10, both sides would need to be multiplied by 2.