D^2 = (x2 - x1)^2 + (y2 - y1)^2
d^2 = (8 - 4)^2 + (k - 2)^2
d = 5 so
5^2 = 4^2 + k^2 - 4k + 4
25 = 16 + k^2 - 4k + 4
25 = 20 + k^2 - 4k
0 = k^2 - 4k - 5
0 = (k - 5)(k + 1)
k has 2 answers
k - 5 = 0
k = 5
k + 1 = 0
k = - 1
The two answers are
(8, 5) and (8, -1) <<<< answer
Answer:
2x^2-5x-12
Step-by-step explanation:
a rectangle has a length of 2x+3 and a width of x-4 find the area
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Area = length * width
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A = (2x+3)(x-4)
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A = 2x(x-4)+3(x-4)
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A = 2x^2-8x+3x-12
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A = 2x^2-5x-12
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Answer: y=-x +2
Step-by-step explanation:
1y=-x+2
1y/1=-x/1+2/1
y=-x+2
Answer:
2.6 hr
Step-by-step explanation:
distance / rate = time
rate = 75 + 95 = 170 mile/hr
distance = 442 miles
442 miles / 170 mile/hr = 2.6 hr
Answer:
2
Step-by-step explanation:
It is 2 because -2x + 10 has a rate of change of -2 while 2 has a rate of change of 0 (it never changes).
