X=20 because you add 3x+10+x=90 because it is a right angle and then you solve for c
Answer:
y = 0.85x
f(x) = x - 0.15x
All the choices seem to have a missing decimal point.
Answer:no explanation ?
Step-by-step explanation:
Answer:
(0, -3)
Step-by-step explanation:
Here we'll rewrite x^2+y^2+6y-72=0 using "completing the square."
Rearranging x^2+y^2+6y-72=0, we get x^2 + y^2 + 6y = 72.
x^2 is already a perfect square. Focus on rewriting y^2 + 6y as the square of a binomial: y^2 + 6y becomes a perfect square if we add 9 and then subtract 9:
x^2 + y^2 + 6y + 9 - 9 = 72:
x^2 + (y + 3)^2 = 81
Comparing this to the standard equation of a circle with center at (h, k) and radius r,
(x - h)^2 + (y - k)^2 = r^2. Then h = 0, k = -3 and r = 9.
The center of the circle is (h, k), or (0, -3).
Answer:
74
Step-by-step explanation:
Let x be the angle being discussed. By definition, two angles are complementary if they add to 90 degrees. So, the complement of angle x is (90 - x). So, the equation is
x = 26 + 3(90-x)
x = 26 + 270 - 3x
4x = 296
x = 74
So, the complement of angle x is (90-74)=16 degrees
To check:
74 = 26 + 3(16)
74 = 26 + 48
74 = 74
I hope this was helpful!