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Yanka [14]
3 years ago
10

Find the slope. thank ​

Mathematics
1 answer:
Butoxors [25]3 years ago
5 0

Step-by-step explanation:

7. The two coordinates are (0, 4) and (1, -4).

 To find the slope you would need to use the formula \frac{y_{2}- y_{1}  }{x_{2}- x_{1}  }

 y_{2} = (-4), y_{1} = 4

 x_{2} = 1, x_{1} = 0

\frac{(-4)-4}{1-0} = \frac{-8}{1} = -8

8. The coordinates, (1, 4) and (0, -2)

(-2) -4 / 0 -1 = -6 / -1 = 6

Sorry for not formatting 8

9. The coordinates (-1, 3) and (4, -1)

(-1) - 3/ 4 - (-1) = -4/ 5

10. The coordinates (1, -1) and (2, -2)

(-2)- (-1) / 2 -1 = -1 / 1 = -1

Hope this helps!!!

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Suppose a railroad rail is 6 kilometers and it expands on a hot day by 20 centimeters in length. Approximately how many meters w
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Answer:

Step-by-step explanation:

Given that the railroad rail is 6 kilometers before expansion.

When the railroad expands, it makes an isosceles triangle at the center of the rail.

The base of the triangle is 6 kilometers while each leg of the triangle is given by (6 + 10/100,000) / 2 = 6.0001 / 2 = 3.00005 kilometers.

[recall that 100,000 centimeters gives 1 kilometers, thus 10 centimetres gives 10/100,000 kilometers]

Taking one half of the isoceles triangle, we have a right triangle with one of the leg as 6 / 2 = 3 kilometers and the hypothenus = 3.00005 kilometers.

Thus, using the Pythagoras theorem, we find the other leg (height) of the right triangle as follows.

Let the other leg of the right triangle be h, then

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4 years ago
Look at the diagram.<br><br> Which is the best explanation of why triangles ABC and ACD are similar?
N76 [4]

Answer:

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8 0
4 years ago
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Please help meeeee<br><br> I need correct asnwers
ycow [4]

Answer:

diameter = 12 cm

radius = 6cm

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area = 36\pi cm² ≈ 113.04 cm²

Step-by-step explanation:

r = radius

d = diameter

C = circumference

A = area

The diagram shows a circle with a diameter of 12 cm

<u>Diameter</u>

d = 12 cm

<u>Radius</u>

   r = d/2

⇒ r = 12/2

⇒ r = 6 cm

<u>Circumference</u>

   C = \pid

⇒ C = 12\pi cm

<u>Area</u>

A = \pir²

⇒ A = \pi x 6²

⇒ A = 36\pi cm²

If you use \pi = 3.14 then:

C = 37.68 cm

A = 113.04 cm²

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