What are the binomial factors of the expression below? x^2+5x-6

Mathematics

1 answer:

babunello [35]3 years ago

4 0

X^2 + 5x - 6 = (x+6)(x-1)

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A number cube is rolled 450 times. The number 3 comes up 67 times. A, what is the theoretical probability of rolling a 3? Write

Margarita [4]

A. 1/6, 6 possible outcomes with 1 desired result.
B.67/450 will give you the answer of 14.888...% I'm going to assume your teacher will let you round to 15 so the chances are 15/100 and in simplest form is 3/20.

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3 years ago

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Mazyrski [523]

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3 years ago

Which statement is true about the product (9x2 – 4y2)(3x – 2y)?

nirvana33 [79]

Answer:

It's the last choice.

Step-by-step explanation:

1. (3x - 2y)(3x -2y)

= 9x^2 - 12xy + 4y^2

The product is (9x^2 - 4y^2) (9x^2 - 12xy + 4y^2)

which is neither a difference of 2 squares or perfect square trinomial.

2. (3x - 2y)(3x + 2y)

= 9x^2 - 6xy + 6xy - 4y^2

= 9x^2 - 4y^2

and (9x^2 - 4y^2(9x^2 - 4y^2) is a perfect square.

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3 years ago

A normal distribution has a mean of 137 and a standard deviation of 7. Find the z-score for a data value of 121. Incorrect Round

Neko [114]

Answer:

The z-score for a data value of 121 is -2.29.

Step-by-step explanation:

In a set with mean $\mu$ and standard deviation $\sigma$ , the zscore of a measure X is given by:

$Z = \frac{X - \mu}{\sigma}$

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.

In this problem, we have that:

$\mu = 137, \sigma = 7$