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2 years ago

Using substitution, determine the solution X=4 and. y=2x+8

Mathematics

2 answers:

nikklg [1K]2 years ago

6 0

Y=2(4)+8
y=8+8
y=16
Hope this helps :)

netineya [11]2 years ago

4 0

Answer:

y=16.

Step-by-step explanation:

Using substitution requires us to substitute a value in place of another value. Luckily we are given the value of x and can use it in the second equation.

First, we substitute 4 for x.

y=2(4)+8

And then we simply solve.

y=2(4)+8

y=8+8

y=16

:)))

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

Eduardwww [97]

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.

8 0

3 years ago

PLS HELP ITS MATH AND I DONT UNDERSTAND <br> No links pls and ty <3

tankabanditka [31]

<h3>Answer:</h3>

C=52.08π

<h3>Solution:</h3>

Circumference of a circle:
C=2πr
where
π=3.14...
r= radius
In this case, r is equivalent to 26.04 ft.
C=2π×26.04
Multiply:
C=52.08π (in terms of pi)

Hope it helps.

Do comment if you have any query.

8 0

2 years ago

Read 2 more answers

PLS HELP RIGHT NOW!!!!!!!!!!!!

AleksandrR [38]

Answer:

Step-by-step explanation:

5 0

2 years ago

Read 2 more answers

What is the domain for the piece of the function represented by f(x)=x+1

babunello [35]

Answer:

(-∞, ∞)

Step-by-step explanation:

As you can see for each value of x , f(x) is defined

example , for x = -8000 , f(x) is defined to be -7999.

for x = 0 , f(x) is defined to be 1.

for x = 8000 , f(x) is defined to be 8001.

Also,

By its graph , Which is a straight line , So, it is defined everywhere

Thus,

its domain is (-∞, ∞)

7 0

3 years ago

What is the dot product of vectors u = <-5, 4> and v=<-8, -6>?

scoray [572]

Answer:

Step-by-step explanation:

dot product = x1x2 + y1y2

= (-5)(-8 + (4)(-6)

= 40 - 24

= 16

7 0

3 years ago