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Westkost [7]
3 years ago
10

Which of the following points (x,y) lies on the graph of 8x + 2y=24

Mathematics
2 answers:
madam [21]3 years ago
5 0
2y=8x + 24
/2   /2     /2
 

y= 4x + 12


scZoUnD [109]3 years ago
3 0
To find the x-intercept, substitute in 0 for y and solve for x. To find the y-intercept, substitute in 0 for x and solve for y. 
x-intercept - (3,0)
y-intercept - (0,12)

Slope: -4
Y-intercept: 12
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Answer:

B.)8ft

Step-by-step explanation:

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Cross multiply:

40/5 = 5x/5

x=8ft

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3 years ago
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andrew11 [14]

Answer:But

Step-by-step explanation:

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Archy [21]
From what i see, i guess the answer may be B. it looks like it, but i dont really know.
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The endpoints of the diameter of a circle are (−2, −3) and (4, −1). Which equation represents the circle?
Alika [10]

Answer:

The equation of circle is (x-1)^{2}+(y-2)^{2} = 18

Step-by-step explanation:

Given the endpoints of the diameter of a circle: (-2,-3) and (4,-1)

We know that the equation of circle is

(x-h)^{2} + (y-k)^{2}= r^{2}

where (x,y) is any point on the circle, (h,k) is center of the circle and r is radius of circle.

To find (h,k): the center is midpoint of diameter

Midpoint of diameter with end points (x1,y1) and (x2,y2) is given by

(  \frac{x1+x2}{2} , \frac{y1+y2}{2}  )

( \frac{-2+4}{2} , \frac{-3-1}{2}  )

(1,2)

Hence (h,k) is (1,2)

Substituting values of (h.k) and (x.y) as (1,2) and (4,-1) respectively in equation of circle, we get

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Now substituting values of (h,k) and r^{2} in equation of circle, we get

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Hence the equation of circle is (x-1)^{2}+(y-2)^{2} = 18

5 0
3 years ago
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77julia77 [94]

Answer:

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Step-by-step explanation:

Here, m represents the marble in each bag.

She put them in 4 bags with m marbles in each bag.

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then, in 4 bag she have 4m marbles

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Since, she had 3 marbles left over.

⇒She have total number of marbles = 4m + 3

Therefore, 4m +3 marbles does Helena have in all.


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