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Dafna11 [192]
3 years ago
5

Find an ordered pair that is solution for linear equation 4x-5y=20​

Mathematics
1 answer:
Eduardwww [97]3 years ago
8 0

Answer:

(5,0) is the solution of the given equation.

(0,-4) is the solution of the given equation.

Step-by-step explanation:

Here, the given equation is: 4 x- 5y  = 20

Now, we need to find a value for (x,y) such that the above equation is satisfied.

The ONLY POSSIBLE way to do this is Hit and Trial.

Let us substitute x  = 0

Then the equation becomes : 4 (0) - 5y = 20

or, -5 y =  20 ⇒  y = -20/5 = - 4

So, for x = 0, y = - 4

So, (0,-4) will be the solution of the given equation.

Let us substitute y  = 0

Then the equation becomes : 4 (x) - 5(0) = 20

or, 4 x =  20 ⇒  x = 20/4 = 5

So, for x = 5, y = 0

So, (5,0) will be the solution of the given equation.

We can try another substitution as well.

For any value of x, we will get a corresponding value of y. So, (x,y) will be the solution of the given equation.

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Answer:

<em>( About ) 1.77 seconds; Option B</em>

Step-by-step explanation:

We are given the equation h ( t ) = - 16t^2 + 50, so in order to determine the time let us determine the x - intercept for y ⇒ 0;

- 16t^2 + 50 = 0,

- 16t^2 = - 50,

t^2 = 25 / 8,

Thus t ⇒ √ ( 25 / 8 ), and t ⇒ - √ ( 25 / 8 ),

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But time is represented only by a positive value, thus

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<em>Answer; ( About ) 1.77 seconds; Option B</em>

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3 years ago
Rebecca is three years younger than twice Anthony's age. Write an expression that represents the relationship of Rebecca's age i
Andrei [34K]

Answer:

X=2y-3

Step-by-step explanation:

Let Rebecca's age be x

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3 years ago
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Answer:

m = -5

Step-by-step explanation:

Step  1  :

Pulling out like terms/ factors

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Multiply both sides of the equation by (-1) :  m = -5

<em><u>Hope this helps.</u></em>

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