I DONT UNDERSTAND HOW TO DO THISSS PLEASE HELP
1 answer:
Answer:
inside
Step-by-step explanation:
All of the points on the circle are at distance 25 units from the center. If the questionable point is closer to the center than that, it is inside the circle.
The distance formula can be used.
d = √((x2 -x1)^2 +(y2 -y1)^2)
d = √((5 -(-5))^2 +(-24 -(-8))^2) = √(10^2 +(-16)^2) = √(100 +256) = √356
d ≈ 18.9
The point (5, -24) is inside the circle centered at (-5, -8) with radius 25.
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The equation of the circle is equivalent to d=25 using (x1, y1) as the center. It is usually written without the radical:
(x -(-5))^2 +(y -(-8))^2 = 25^2
(x +5)^2 +(y +8)^2 = 625
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Answer:
40 hours
Step-by-step explanation:
Lets take "x" as the # of hours it takes the lava to reach the sea
since there is a lava flow of 0.5 kilos per hour
we will multiply "x" with 0.5
0.5x
now the tube system is 20 kilometers long
this means that at a rate of 0.5 kilos per hour the lava will reach the sea once it is 20 kilometers deep
so
0.5x=20
divide "0.5" by both sides to eliminate the coefficient
x=40
it will take 40 hours for the lava to reach the sea
Hope this helps!
D) Radius
It is going from the center to a point on the circle
It is going from the center to a point on the circle
Answer:
slope is undefined
Step-by-step explanation:
Calculate the slope m of AB using the slope formula
m =
with (x₁, y₁ ) = A(6, 2) and (x₂, y₂ ) = B(- 3, 2)
m = =
= 0
A line with a slope of zero is a horizontal line, parallel to the x- axis.
Thus a line perpendicular to AB is a vertical line parallel to the y- axis.
The slope of a vertical line is undefined