40.
Step-by-step explanation:
Base times height. This is a rhombus. 4 x 10 = 40. If you chop off the triangle to the right and place it on the left where 5 is, it'll be a rectangle. Formula for a rhombus is B x H, Base is 10, height is 4, and you get 40.
Answer:
-2
To answer this, just take the negative reciprocal of 1/2. We obtain -2.
B 4ab= c^2 - (b-a) ^2
Hopefully this helps
