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tekilochka [14]

3 years ago

13

Solve for x～

x {}^{2} - 5x + 6 = 0" alt="x {}^{2} - 5x + 6 = 0" align="absmiddle" class="latex-formula">

thankyou! :)

1 answer:

bearhunter [10]3 years ago

7 0

Answer:

x=2,3

Step-by-step explanation:

${x}^{2} - 5x + 6 = 0 \\ {x}^{2} - 2x - 3x + 6 = 0 \\ x(x - 2) - 3(x - 2) = 0 \\ (x - 2)(x - 3) = 0 \\ either \: x = 2 \: \: \: \: \: or \: x = 3$

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kolbaska11 [484]

The answer is A. 42

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3 years ago

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Philip ran out of time while taking a multiple-choice test and plans to guess the last 4 questions. Each question has 5 possible

White raven [17]

Using the binomial distribution, it is found that there is a 0.4096 = 40.96% probability that he answers exactly 1 question correctly in the last 4 questions.

<h3>What is the binomial distribution formula?</h3>

The formula is:

$P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}$

$C_{n,x} = \frac{n!}{x!(n-x)!}$

The parameters are:

x is the number of successes.

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p is the probability of a success on a single trial.

Considering that there are 4 questions, and each has 5 choices, the parameters are given as follows:

n = 4, p = 1/5 = 0.2.

The probability that he answers exactly 1 question correctly in the last 4 questions is P(X = 1), hence:

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More can be learned about the binomial distribution at brainly.com/question/24863377

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2 years ago

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Blizzard [7]

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Step-by-step explanation:

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3 years ago

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3 years ago

Simplify 5a²x(-3b²)x2c

uranmaximum [27]

<span>The goal in simplifying numbers is to reduce it that can be best seen in the eye. In here, you are given 5a²x(-3b²)x2c. Note that 5, -3 and 2 are coefficients and a², b² and c are variables. Multiply first the coefficients 5, -3 and 2 and you get -30. Always remember that in multiplying numbers, especially variables, the base of the exponent must be equal. However, you have variables of a², b² and, c. You cannot multiply or add them because they are different. So the answer is -30a² b²c.</span>

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3 years ago

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