Answer:
sry I just wanted the points I'm in middle school so I don't know this stuff either
Its upsidedown, witch one do you need help with?
Answer:
-5
Step-by-step explanation:
Moving all terms of the quadratic to one side, we have
.
A quadratic has one real solution when the discriminant is equal to 0. In a quadratic
, the discriminant is
.
(The discriminant is more commonly known as
, but I changed the variable since we already have a
in the quadratic given.)
In the quadratic above, we have
,
, and
. Plugging this into the formula for the discriminant, we have
.
Using the distributive property to expand and simplifying, the expression becomes

Setting the discriminant equal to 0 gives
.
We can then solve the equation as usual: first, divide by 2 on both sides:
.
Squaring both sides gives
,
and subtracting 5 from both sides, we have

θ\ 6 degrees
\
\ so the θ= 180-90-6 =84 degrees so we need to find x
20m \ tan (84)=x/20
____ \ x=20 tan(84)
x x=190.287
Answer:
it is irrational
Step-by-step explanation:
hav a nice dAY