Simplify the expression. 3(x + 6x2 − 3x − 3x2)

Mathematics

1 answer:

anastassius [24]3 years ago

6 0

B yee3eeeeeeeendjchchd

You might be interested in

10 in

lisabon 2012 [21]

The answer is 36in because that’s the pathagreom you need to use to find the answer

5 0

3 years ago

5/6 of 15 i need help????????????

emmainna [20.7K]

Answer: 12.5 or 12 1/2

Step-by-step explanation:

7 0

2 years ago

Read 2 more answers

The amount of time all students in a very large undergraduate statistics course take to complete an examination is distributed c

Anestetic [448]

Answer:

a) The mean is $\mu = 60$

b) The standard deviation is $\sigma = 9$

Step-by-step explanation:

Normal Probability Distribution:

Problems of normal distributions can be solved using the z-score formula.

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.

The probability a student selected at random takes at least 55.50 minutes to complete the examination equals 0.6915.

This means that when X = 55.5, Z has a pvalue of 1 - 0.6915 = 0.3085. This means that when $X = 55.5, Z = -0.5$