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GenaCL600 [577]
4 years ago
15

4x+9 = 1/2 (10x+8) what is x

Mathematics
2 answers:
OverLord2011 [107]4 years ago
8 0

Answer :

x = 5

Solution :

4x + 9 = 1/2(10x + 8)

4x + 9 = 5x + 4

-x = - 5 | * (-1)

x = 5

velikii [3]4 years ago
6 0
-5/4 is the answer I think
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What is the equation of the line with a y-intercept of 4 and a point (8,8)? ​
Nookie1986 [14]

Answer:

The equation of the line with a y-intercept of 4 and a point (8,8) is y=\frac{1}{2} *x+4

Step-by-step explanation:

A linear equation can be expressed in the form

y = m * x + b

where x and y are coordinates of a point, m is the slope and b is the y-intercept. Since this equation describes a line in terms of its slope and its y-intercept, this equation is said to be in its slope-intercept form.

Graphically this equation represents a line.

In this case, you know:

  • The point (x,y)=(8,8)
  • Y-intercept= 4

Replacing:

8=m*8 +4

Solving:

8-4=m*8

4=m*8

4÷8= m

m=\frac{1}{2}

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3 years ago
Please help please please
Marina CMI [18]

Answer:

C. y = 2x + 8

Step-by-step explanation:

✔️First, find the slope of the line that goes through points (-2, 4) and (6, 20):

Slope (m) = ∆y/∆x = (20 - 4) / (6 - (-2))

Slope (m) = 16/8

m = 2

✔️Find the y-intercept (b):

To do this, substitute (x, y) = (6, 20) and m = 2 into y = mx + b

Thus:

20 = 2(6) + b

20 = 12 + b

20 - 12 = b

8 = b

b = 8

✔️Write the equation by substituting m = 2 and b = 8 into y = mx + b

Thus:

y = 2x + 8

8 0
3 years ago
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