2x + 5y = 20
5y = -2x + 20
y = -2/5x + 4. The slope here is -2/5. A perpendicular line will have a negative reciprocal slope. To find the negative reciprocal of -2/5, we flip the slope and change the sign. So our perpendicular line will have a slope of 5/2.
y = mx + b
slope(m) = 5/2
(10,-4)....x = 10 and y = -4
now we sub and find b, the y int
-4 = 5/2(10) + b
-4 = 25 + b
-4 - 25 = b
-29 = b
so our perpendicular equation is : y = 5/2x - 29 <==
Answer:
Step-by-step explanation:
edg 2020
Answer:
h = 1/616 ≈.002 cm
Step-by-step explanation:
V of a cylinder = Area of the circle · height of the cylinder
A of the circle = π·r² = π·(d/2)² = (22/7)·(28/2)² = 616 cm³
If the V of the cylinder = 1 liter and the Area of the circle = 616 cm³ then
What is the height of the cylinder?
V of a cylinder = Area of the circle · height of the cylinder
V of a cylinder / Area of the circle = height of the cylinder
1/616 = height of the cylinder
Height of the cylinder that is lowered when 1 liter of water is drawn is
h = 1/616 ≈.002 cm
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