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OverLord2011 [107]
3 years ago
15

2/5,8/20: is it a proportion?

Mathematics
1 answer:
katen-ka-za [31]3 years ago
6 0

Answer:

Step-by-step explanation:

you need to simplify 8/20

8/20  can be put into the greatest common factor which is 4

then divide both sides by 4 this equals to 2/5

So yes they are

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3 years ago
Please HELP ME ON THIS MATH WRITTEN RESPONSE QUESTION.. THANK YOU
sergij07 [2.7K]

Answer:

Quadrilateral ABCD is not a square. The product of slopes of its diagonals is not -1.

Step-by-step explanation:

Point A is (-4,6)

Point B is (-12,-12)

Point C is (6,-18)

Point D is (13,-1)

Given that the diagonals of a square are perpendicular to each other;

We know that the product of slopes of two perpendicular lines is -1.

So, slope(m) of AC × slope(m) of BD should be equal to -1.

Slope of AC = (Change in y-axis) ÷ (Change in x-axis) = (-18 - 6) ÷ (6 - -4) = -24/10 = -2.4

Slope of BD = (Change in y-axis) ÷ (Change in x-axis) = (-1 - -12) ÷ (13 - -12) = 11/25 = 0.44

The product of slope of AC and slope of BD = -2.4 × 0.44 = -1.056

Since the product of slope of AC and slope of BD is not -1 hence AC is not perpendicular to BD thus quadrilateral ABCD is not a square.

4 0
3 years ago
there are 15 cards , numbered 1 through 15 , if you pick a card what is the probability that you choose an odd number or a two
Paul [167]
I think the probability of picking an odd number is 7/15
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Gekata [30.6K]

Answer:

306

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There are 102 triangles, a triangle has 3 sides, each side is 1 cm. 102 x 3=306

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sesenic [268]

Answer:

  0

Step-by-step explanation:

The sorted data set is ...

  1 2 3 3 5 7 8 9

The median is the average of the middle two numbers: (3+5)/2 = 4.

Replacing one of the 3s with a 1 makes the data set be ...

  1 1 2 3 5 7 8 9

The average of the middle two numbers is (3+5)/2 = 4.

The median increases by 4 - 4 = 0.

7 0
3 years ago
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