Use the following ( a,b and c are the lengths of the 3 sides with a the longest side):-
If its acute then a^2 < b^2 + c^2
Answer:
592
Step-by-step explanation:
A=2(wl+hl+hw)
A=2(8*10+12*10+12*8)=592
Step-by-step explanation:
question is not clear enough
Can't see the letters even
Answer:
No real roots
Step-by-step explanation:
The given equations are:


We make y the subject in the first equation to get

We substitute into the second expression to get:

We expand to get:

Multiply through by 4 to get:


The discriminant is given by 


Since the discriminant is less than zero, the two curves never intersects.
Therefore the system has no real roots
You have to add more there is no context here, apologies but try to make another question with maybe a picture and more text?