Answer:
-xz - 2x²- 2yz
Step-by-step explanation:
Multiply out (x-2y)z-2x(x+z)
(x - 2y)z - 2x( x + z)
Rearrange
z(x - 2y) - 2x(x + z)
Open bracket by multiplying by letters outside bracket
xz - 2yz - 2x² - 2xz
Collect like terms
xz -2xz - 2x² - 2yz
-xz - 2x² - 2yz
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Step-by-step explanation:
Let's say the coordinates of Q are (h, k).
The slope of PQ is perpendicular to the tangent line.
(k − 2) / (h − 2) = -⅓
3(k − 2) = -(h − 2)
3(k − 2) = 2 − h
Solving for h:
h = 2 − 3(k − 2)
h = 2 − 3k + 6
h = 8 − 3k
(2, 2) is a point on the circle, so:
(2 − h)² + (2 − k)² = r²
Substituting:
9 (k − 2)² + (2 − k)² = r²
10 (k − 2)² = r²
The equation of the circle is:
(x − 8 + 3k)² + (y − k)² = 10 (k − 2)²
Without more information, there are an infinite number of possible solutions. For example, if k = 1, the equation of the circle is:
(x − 5)² + (y − 1)² = 10
Answer:
840 square feet
Step-by-step explanation:
13 x 20 = 260 x 2 = 520
10 x 12 / 2 = 60 x 2 = 120
10 x 20 = 200
520 + 120 + 200 = 840
Answer:
0.14 or 0.142
Step-by-step explanation:
Answer:
What statements? Just a sentence from this?
Step-by-step explanation:
