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Rasek [7]
2 years ago
11

I need help i don’t know this at all

Mathematics
1 answer:
alexgriva [62]2 years ago
5 0

Answer:

Step-by-step explanation:

Yes what is the problemo! :>

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Find the constant of variation k for the direct variation ​
Alla [95]

Answer:

The constant of variation is k = -2 ⇒ (B)

Step-by-step explanation:

The equation of the direct variation is y = k x, where

  • k is the constant of variation
  • The constant of variation k = \frac{y}{x}

The given table has 4 points (-1, 2), (0, 0), (2, -4), (5, -10)

We can use one of the points <em>[except point (0, 0)]</em> to find the value of k

∵ (-1, 2) is a given point

∴ x = -1 and y = 2

∵ k = \frac{y}{x}

→ Substitute the values of x and y in the relation above

∴ k = \frac{2}{-1}

∴ k = -2

The constant of variation is k = -2

7 0
3 years ago
Are irrational numbers terminating
Artemon [7]

Hi,


Irrational Numbers are non-terminating.


Hope this helps.

r3t40



3 0
3 years ago
Which following fractions is equivalent to 0.45
vladimir1956 [14]

0,45=\frac{45}{100} =\frac{9}{20}

6 0
3 years ago
Read 2 more answers
Find the area of the shaded region. Use 3.14 as an approximation.​
MA_775_DIABLO [31]

Answer:

shaded area = 113.64 cm²

Step-by-step explanation:

To find the shaded area, subtract the area of the circle from the area of the triangle.

Area of a triangle = 1/2 x base x height

⇒ area of triangle = 1/2 x 25 x 21.4 = 267.5 cm²

Area of a circle = \pi r^2 (where r is the radius)

From inspection, we can see that the diameter of the circle = 14 cm

Therefore, as the diameter = 2r, then r = 14 ÷ 2 = 7 cm

⇒ area of circle = 3.14 x 7² = 153.86 cm²

Shaded area = area of triangle - area of circle

⇒ shaded area = 267.5 - 153.86 = 113.64 cm²

8 0
2 years ago
If 7x = 24 y, find the ratio of x to y.​
MArishka [77]

Answer:

7:24 or \frac{7}{24}

Step-by-step explanation:

a ratio is usually defined as a fraction ( the first to the next)

8 0
2 years ago
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