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anyanavicka [17]
3 years ago
6

Someone please help me with this​

Mathematics
1 answer:
11Alexandr11 [23.1K]3 years ago
5 0
2/3 and 8/12 are proportional but 3/14 and 8/28 aren’t
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Answer:

3x-5=2x+6

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x=11

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Which graph represents a function?
s344n2d4d5 [400]

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the third one (bottom left)

Step-by-step explanation:

all the others have at least one x value with multiple possible y values.

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Here is a sketch of y=x^2+bx+c The curve intersects
atroni [7]

Answer:

y = 18  and  x = -2

Step-by-step explanation:

y = x^2+bx+c   To find the turning point, or vertex, of this parabola, we need to work out the values of the coefficients b and c. We are given two different solutions of the equation. First, (2, 0).  Second, (0, -14). So we have a value (-14) for c. We can substitute that into our first equation to find b. We can now plug in our values for b and c into the equation to get its standard form. To find the vertex, we can convert this equation to vertex form by completing the square. Thus, the vertex is (4.5, –6.25). We can confirm the solution graphically     Plugging in  (2,0) :

y=x2+bx+c  

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b=-2+2c  

Plugging in  (0,−14) :

y=x2+bx+c  

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−16=0+b+c  

b=16−c  

Now that we have two equations isolated for  b , we can simply use substitution and solve for  c .   y=x2+bx+c  16 + 2 = y   y = 18  and  x = -2

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3 years ago
A ladder is placed 30 inches from a wall. It touches the wall at a height of 50 inches from the ground. The angle made by the la
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