Answer:
center (2, 9); radius 6
Step-by-step explanation:
Standard equation of a circle:
(x - h)² + (y - k)² = r²
where the center is (h, k), and r is the radius.
You have
(x - 2)² + (y - 9)² = 36
(x - 2)² + (y - 9)² = 6²
Compare this last form to
(x - h)² + (y - k)² = r²
h = 2; k = 9; r = 9
Answer: center (2, 9); radius 6
C(h)=80h+210
80h+210=490 subtract 210 from both sides
80h=280 divide both sides by 80
h=3.5 hours
M< 3 = 180 - 60 - 90
m< 3 = 30
answer
30
Answer:
The answer is
or 1.666...
Step-by-step explanation:
Reorganize the problem
÷
=
Reciprocal the Multiplier
÷
=
x
=
or
or 1 
Hope this helps!
Answer:
To prove that the triangle is a right- isosceles triangle, prove that
- There is a right angle in the triangle
- Two sides of the triangle are equal in length
Another way to prove that angle YXZ is a right angle is to calculate the length of XY, XZ and YZ using the distance formula. Then show that (YZ)² = (XY)² + (XZ)².
By the inverse of Pythagoras' Theorem, ∡YXZ is a right angle.
*The product of the gradients of 2 perpendicular lines= -1.
Please see the attached pictures for full solution.