Answer:
Step-by-step explanation:
x+5+x+7x-5=180 degree (being the interior angles of a triangle)
9x=180
x=180/9
x=20 degree
3+-4=-1
3-4=-1
-1=-1
so the answer is:
-1 = -1
The statement if TRUE.
There is no restriction on the coefficient of the polynomial, it can either be a fraction,a negative number of a positive number or even irrational number. It does not have any effect.
What matters is the exponent. The exponent must be a non-negative integer. Since in this case the exponent is positive, the expression will be a polynomial.
A=1/2 bh
40=1/2•20h
80=20h
4=h
You have to convert everything into miles and then draw the tangent line that goes from the peak of the mountain to the horizon. That can form a right triangle since tangent lines are perpendicular to the radius at the point they touch the circle. then you can solve for the horizon which is one of the legs of the right triangle. when you do everything it should end up being 174 miles. I will attach my work so you can try to decipher what to do.
I hope this helps.