10 x 10 = 100 80 x 80 =6400 6400-100= 6300 so that would have to be 3150ft.
-2 < n
3
This inequality basically says "-2 is less than n, which is less than or equal to 3".
Mark as brainliest if this helped! :)
Answer:
there
Step-by-step explanation:
We need Pythagoras theorem here
a^2+b^2 = c^2
a, b = legs of a right-triangle
c = length of hypotenuse
Let S=shorter leg, in cm, then longer leg=S+2 cm
use Pythagoras theorem
S^2+(S+2)^2 = (10 cm)^2
expand (S+2)^2
S^2 + S^2+4S+4 = 100 cm^2 [collect terms and isolate]
2S^2+4S = 100-4 = 96 cm^2
simplify and form standard form of quadratic
S^2+2S-48=0
Solve by factoring
(S+8)(S-6) = 0 means (S+8)=0, S=-8
or (S-6)=0, S=6
Reject nengative root, so
Shorter leg = 6 cm
Longer leg = 6+2 cm = 8 cm
Hypotenuse (given) = 10 cm
First answer is right
Base is 8
Height is 9
9x8=72
72/2=36
36 units ^2