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Lynna [10]
3 years ago
14

What is the value of 3x2 - 5xy + 5y2 for x = -6 and y = 2?

Mathematics
2 answers:
VMariaS [17]3 years ago
8 0
I assume you mean:
3x^2 -5xy + 5y^2.

Simply substitute the given values into the equation:

3(-6)^2 - 5(-6)(2) + 5(2)^2

=188
Naily [24]3 years ago
6 0
-36 +60 =24+20=44 answer is 44 unless the first x is a multiplication sign
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A coin is tossed 8 times. Which of the following represents the probability of the coin landing on heads all 8 times?
ElenaW [278]

Answer:

\large\boxed{\large\boxed{Probability=1/256\approx  0.0039}}

Explanation:

Since, there are two possible outcomes for every toss (head or tail), the sample space for<em> a coin tossed 8 times</em> is 2×2×2×2×2×2×2×2 = 2⁸ = 256.

<em>Landing on heads all 8 times</em> is just one of the possible outcomes: HHHHHHHH ⇒ 1.

Hence, the <em>probability </em>is calculated from its own definition:

Probability = number of favorable outcomes / number of possible outcomes

  • Probability=1/256\approx  0.0039\text{         }\leftarrow answer

8 0
3 years ago
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Step-by-step explanation:

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yawa3891 [41]

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19.63%

Step-by-step explanation:

The probability of scoring 8 points is the probability of getting a dart into the green circle.

That probability is equivalent to the area of the circle divided by the total area of the square board.

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The area of the whole square board is one side squared: 20 squared = 400 cm squared

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8 0
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3 0
3 years ago
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32

Step-by-step explanation:

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3 years ago
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