Answer:
I dont know and i also dont know why im doing this.
Step-by-step explanation:
Answer:
150
Step-by-step explanation:
A=B*H/2
A=15*20/2
A=300/2
A=150
Ignore the hypotenuse btw
I believe the answer is 19 cm, because you compare 8cm to the other side, it's basically the same. Multiply 2 x 8 and you get 19 cm.
Remember difference of 2 perfect squares?
we do the same for denom, to get the √5 to 5
1-√5 times 1+√5=1-5
so what we do is
(6-√5)/(1-√5) times (1+√5)/(1+√5)=
(1+5√5)/(1-5)=
(1+5√5)/-4=
(-1-5√5)/4