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photoshop1234 [79]
3 years ago
6

How do you isolate 2x-y+8=0?

Mathematics
2 answers:
Margarita [4]3 years ago
6 0
X would equal -4 and for the point on a graph would be -4,0
LekaFEV [45]3 years ago
5 0
<span>The best way to find the angular and linear coefficient is by assembling the reduced equation:
 
2x - y + 8 = 0
- y = - 2x - 8 .(- 1)
y = 2x + 8
 
The angular coefficient is the value that accompanies the X and the coefficient is the value that comes alone.
 
Angular Coefficient: 2
Linear Coefficient: 8
 
</span><span>If you want to find the values ​​X and Y, we have:

</span>2x - y + 8 = 0 
2(x - 8) = y 
<span>x - 8 = 2 </span>
<span>x = 2+8 </span>
x = 10 

2x - y + 8 = 0 
2*10 - y + 8 = 0
20 - y = - 8
- y = - 8 - 20
- y = - 28 .(-1)
y = 28

Confirm that the solution is correct:
2x - y + 8 = 0 
2*(10) - 28 + 8 = 0
20 - 28 = -8
- 8 = - 8 (TRUE)
<span>




I hope I have helped!

</span>
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Unit rates is the rate of a quantity in comparison to 1 i.e. unit.

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From the question, the unit rates are given as:

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The unit rates of Tristan and Ebony are not given.

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A balloon rises at the rate of 10 ft/sec from a point on the ground 100 feet from an observer. Find the rate of change of the an
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The rate of change of the angle of elevation of the balloon from the observer when the balloon is 100 feet above the ground is  1/20 degree/sec.

<h3>What is angle of elevation?</h3>

It is described as a relationship between an oblique line from the observer's eye to an item above his eye and the horizontal plane. This angle eventually develops above the surface. The angle of elevation is made in such a way that it is above the observer's eye, as the name suggests.

Calculation for the rate of change of angle of elevation-

According to the question,

A balloon rises at the rate of 10 ft/sec from a point on the ground 100 feet from an observer.

The balloon is 100 feet above the ground.

Let the height of the balloon be 'h' ft.

Then tanØ = h/100

h = 100tanØ

Differentiate the above equation with respect to time.

dh/dt = 100 sec² Ø (dØ/dt)

We know dh/dt = 10 ft/sec.

when h = 100

tanØ = 100/100 = 1/1

tanØ = Perpendicular/Base

On comparing above two equations,

Perpendicular = 1; Base = 1.

By Pythagoras the hypotenuse is,

H² = P² + B²

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H = √2

Now, calculate the value of cosØ.

cosØ = B/H = 1/√2

Squaring both side

cos² Ø = 1/2

sec² Ø = 1/cos² Ø

sec² Ø = 2

The main equation was,

dh/dt = 100 sec² Ø (dØ/dt)

Substitute the values,

dØ/dt = (dh/dt )/100 sec² Ø

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dØ/dt = 1/20 degree/sec.

Therefore, the rate of change of the angle of elevation of the balloon from the observer is  1/20 degree/sec.

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The common denominator is 3a²

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