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enyata [817]
3 years ago
12

Solve x+8y/4=9y for x

Mathematics
2 answers:
nikklg [1K]3 years ago
6 0

Answer:

x = 7y

Step-by-step explanation:

x+8y/4=9y

Multiply each side by 4 to get rid of the fractions

4(x+8y/4)=9y*4

Distribute

4x +8y = 36y

Subtract 8y from each side

4x +8y-8y = 36y-8y

4x = 28y

Divide each side by 4

4x/4 = 28y/4

x = 7y

Eva8 [605]3 years ago
3 0

x+8y/4=9y

Multiply each side by 4

4(x+8y/4)=9y*4

=>4x +8y = 36y

Subtract 8y from each side

=>4x +8y-8y = 36y-8y

=4x = 28y

Divide each side by 4

=>4x/4 = 28y/4

x = 7y

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Please please help me
Katarina [22]

Answer:

y = - 2x + 6

Step-by-step explanation:

The equation of a line in slope- intercept form is

y = mx + c ( m is the slope and c the y- intercept )

Calculate m using the slope formula

m = (y₂ - y₁ ) / (x₂ - x₁ )

with (x₁, y₁ ) = (- 8, 22) and (x₂, y₂ ) = (3, 0)

m = \frac{0-22}{3+8} = \frac{-22}{11} = - 2, thus

y = - 2x + c ← is the partial equation

To find c substitute either of the 2 points into the partial equation

Using (3, 0), then

0 = - 6 + c ⇒ c = 0 + 6 = 6

y = - 2x + 6 ← equation of line

5 0
3 years ago
×/2=y/3; y/4=z/4 và x+2y-z=10
FinnZ [79.3K]
Can you make it clear?
6 0
3 years ago
True or false the in-center of a triangle is the point equidistant from each side of the triangle
Viktor [21]

Answer:

True.

Step-by-step explanation:

Let's see the definition of in-center of a triangle.

The in-center of a triangle is a point located in the center of the triangle. It is equal distance from all sides of the triangle.

Therefore, it is True.

If we draw line segments from in-center to each vertex of the triangle, it will bisect the angles.

Herewith I have attached the figure for your reference.

3 0
3 years ago
Read 2 more answers
Write an example of a trinomial that cannot be factored.
OverLord2011 [107]

Answer:

x^{2} + x + 1

Step-by-step explanation:

a trinomial that cannot be factored has no real roots.

here is one:

x^{2} + x + 1

After graphing this trinomial has no intersections points with the x-axis wich means it has no roots

5 0
3 years ago
A sapling, or young tree, is planted in a garden. After 3 years, it is 180 cm tall. After 7 years, it is 368 cm tall. What is th
Mashcka [7]
The function modelled by the height (x) of the tree is as follows:
y - 180 = (368 - 180)/(7 - 3) (x - 3)
y - 180 = 47(x - 3) = 47x - 141
y = 47x - 141 + 180 = 47x + 39

Therefore, after 10 years, the tree will be 47(10) + 39 = 470 + 39 = 509 cm tall
8 0
4 years ago
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