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artcher [175]
3 years ago
14

You have 10 green marbles, 30 white marbles, and 25 black marbles. What’s the probability of NOT selecting a green marble?

Mathematics
1 answer:
prohojiy [21]3 years ago
4 0

Answer

Its around 30% but their is about 55 other marbles

Step-by-step explanation:

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Does 2, 5, and 7 make a right triangle
MakcuM [25]

Answer:  No, we don't have a right triangle

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Explanation:

If a triangle with sides a,b,c makes the equation a^2+b^2 = c^2 true, where c is the longest side, then this triangle is a right triangle. This is the converse of the pythagorean theorem.

Here we have a = 2, b = 5 and c = 7.

So...

a^2+b^2 = c^2

2^2+5^2 = 7^2

4+25 = 49

29 = 49

The last equation is false, so the first equation is false for those a,b,c values. Therefore, we do <u>not</u> have a right triangle.

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In contrast, consider the classic 3-4-5 right triangle

a = 3, b = 4 and c = 5 would make a^2+b^2 = c^2 true because 3^2+4^2 = 5^2 is a true equation (both sides lead to 25).

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LenKa [72]
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3 years ago
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Degger [83]

Answer:

The answer is D for this question. The one at the very bottom of the picture. The other person who answered on this question is incorrect.

Step-by-step explanation:

3 0
3 years ago
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katen-ka-za [31]

Answer:

x=12

Step-by-step explanation:

This is a right triangle, so the Pythagorean theorem can be used. The Pythagorean theorem states that C^2=a^2+b^2 where C is the hypotenuse and a and b are legs. In this question, we are given a and C. So, plugin 13 for C and 5 for a and solve for b. Once you rearrange the equation you get, b=\sqrt{13^2-5^2}. Next, solve what is under the root to get, b=\sqrt{144}. Finally, square root 144 for the final answer b=12.

3 0
3 years ago
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Answer:

-2.1

Step-by-step explanation:

7 0
2 years ago
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