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oksian1 [2.3K]
3 years ago
5

I need help with this equation. -2x = 10

Mathematics
2 answers:
andriy [413]3 years ago
6 0

DIvide both side by -2 then simply. x=-5

Svet_ta [14]3 years ago
4 0
X = -5
.....................
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Please help Need help
Anettt [7]
This problem can be readily solved if we are familiar with the point-slope form of straight lines:
y-y0=m(x-x0) ...................................(1)
where 
m=slope of line
(x0,y0) is a point through which the line passes.

We know that the line passes through A(3,-6), B(1,2)

All options have a slope of -4, so that should not be a problem.  In fact, if we check the slope=(yb-ya)/(xb-xa), we do find that the slope m=-4.

So we can check which line passes through which point:

a. y+6=-4(x-3)
Rearrange to the form of equation (1) above,
y-(-6)=-4(x-3)  means that line passes through A(3,-6) => ok

b. y-1=-4(x-2) means line passes through (2,1), which is neither A nor B
   ****** this equation is not the line passing through A & B *****

c. y=-4x+6  subtract 2 from both sides (to make the y-coordinate 2)
   y-2 = -4x+4, rearrange
   y-2 = -4(x-1)  
   which means that it passes through B(1,2), so ok

d. y-2=-4(x-1)
   this is the same as the previous equation, so it passes through B(1,2), 
   this equation is ok.

Answer: the equation y-1=-4(x-2) does NOT pass through both A and B.
   
8 0
2 years ago
6. What equation would you use to solve for x?*
postnew [5]
Tan70=x/6
Opposite over adjacent
4 0
2 years ago
What is the SCALE FACTOR? What type of DILATION is occurring from the first triangle to the second triangle?
REY [17]

Answer:

Step-by-step explanation:

\frac{1,5}{6} = 0,25 = \frac{25}{100} = 1:4

7 0
3 years ago
Please help me with this question
zubka84 [21]
Answer: c. f - 3 + 6d

Explanation: 5d - d + 4 + 2d - 5f - 6f - 7
- 5f - 6f = f
4 - 7 = -3
5d - d = 4d, 4d + 2d = 6d
4 0
2 years ago
Find f(x) and g(x) such that h(x)=(f•g)(x)<br> h(x)=4/x-8<br> Suppose that g(x)=x-8
solmaris [256]

Answer:

i dont understand

Step-by-step explanation:

5 0
3 years ago
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