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Anestetic [448]
3 years ago
15

Idk Help meee please

Mathematics
1 answer:
nordsb [41]3 years ago
8 0

Answer:

-9 =x

Step-by-step explanation:

We know these are similar triangles

We can use ratio's to solve

Let CS = y  and XR = y+y or 2y

y           x+19

------ = ------------

2y         x+29

We can simplify the ratio on the left by dividing by y

1           x+19

------ = ------------

2         x+29

Using cross products

1(x+29) = 2(x+19)

Distribute

x+29 = 2x+38

Subtract x from each side

x-x+29 = 2x-x+38

29 = x+38

Subtract 38 from each side

29-38= x+38-38

-9 =x

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Umnica [9.8K]

Answer:

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Step-by-step explanation:

The general equation of a straight line is;

y = mx + c

In this case , the y-intercept is -5

So the partial equation is;

y = mx - 5

To get m, we use the x-intercept

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Insert this in the equation , we have;

0 = 5m-5

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The equation of the line is thus;

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So we want to find the inverse of this;

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Make d the subject of the formula

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replace d with x

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now replace x with y

So we have

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