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makvit [3.9K]
3 years ago
15

Write an equation perpendicular to the line 6x+12y=24 and passing through (4,0)

Mathematics
1 answer:
noname [10]3 years ago
6 0
Y = 2x - 8 is perpendicular to 6x+12y=24 and passes through (4,0)
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One liter of paint covers 100 square feet. How many gallons of paint does it take to cover a room whose walls have an area of 80
mezya [45]
1 gallon is 3.78 L
100 sq feet needs 1 L
800 sq feet needs x

100/800 = 1/x
100x = 800
x = 800/100
x = 8 L

If you use the fact that 4 L = 1 gallon then you need 2 gallons of paint. I you use the more accurate 3.78 L then
1 gallon = 3.78 L
x gallon = 8 L

3.78 x = 8*1
x = 8/3.78
x = 2.12 gallons.
 
I guess you could say that 1 gallon and 1 L would do you.
8 0
3 years ago
Fill in the other coordinate for the line 7x - 5y =21:(4 , ?)
inessss [21]
<span>7x - 5y =21
-7           -7
5y  =     14
----        -----
5            5
y=   2.8
(4,2.8)</span>
7 0
3 years ago
Either enter an exact answer in terms of \piπpi or use 3.14, point, 14 for \piπpi and enter your answer as a decimal.
OverLord2011 [107]

Answer:

49π sq. units

Step-by-step explanation:

Find the diagram attached

We can find the area of the given circle

Given

diameter of the circle d = 14

Area of the circle = πd²/4

Substitute the given diameter

Area of the circle = π(14)²/4

Area of the circle = 196π/4

Area of the circle = 49π sq. units

Hence the exact answer in terms of π is 49π sq. units

4 0
3 years ago
Triangle ABC is an isosceles with a base AC. The base angles are 60 degrees. Find the length of the base and the length of the a
lisabon 2012 [21]

Answer:

base =5   because all angles=60, so an equilateral triangle

height=4.33

Step-by-step explanation:

height^2+1/2(5)^2=5^2

height^2+6.25=25

height^2=18.75

height=4.33

8 0
3 years ago
A rancher has 4 comma 700 feet of fencing available to enclose a rectangular area bordering a river. he wants to separate his co
guapka [62]
Area=length*width
let the sides perpendicular to the river be x
then  the side parallel to the river is 4,700-2x 
A(x)=x(4700-2x)
A(x)=4700x-2x^2

This a quadratic function with a=-2 and b=4700
thus
Maximum area occurs where x=-b/2a=-4700(-2*2)=1,175 ft
length=4700-2(1175)=2,350 ft
4 0
3 years ago
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