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Flura [38]
3 years ago
14

What is a coefficient for (4x-2)

Mathematics
2 answers:
PilotLPTM [1.2K]3 years ago
7 0
A coefficient is a number attached to a variable that will be multiplied when evaluated. In this case, it's 4.
zubka84 [21]3 years ago
5 0
The coefficient in (4x-2) is the -2
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50% because 12.5lbs is half of 25lbs
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3 years ago
11t - 6t = 45 solve the equation and enter the value of t below ​
Arada [10]

Answer:

t = 9

Step-by-step explanation:

11t - 6t = 45

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<h3>t =  \frac{45}{5}</h3>

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2 years ago
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At a Psychology final exam, the scores are normally distributed with a mean 73 points and a standard deviation of 10.6 points. T
USPshnik [31]

Answer:

The score that separates the lower 5% of the class from the rest of the class is 55.6.

Step-by-step explanation:

Problems of normally distributed samples 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.

In this question:

\mu = 73, \sigma = 10.6

Find the score that separates the lower 5% of the class from the rest of the class.

This score is the 5th percentile, which is X when Z has a pvalue of 0.05. So it is X when Z = -1.645.

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

-1.645 = \frac{X - 73}{10.6}

X - 73 = -1.645*10.6

X = 55.6

The score that separates the lower 5% of the class from the rest of the class is 55.6.

3 0
3 years ago
Write the equation of the line that passes through (3, 4) and (2, –1) in slope-intercept form.
matrenka [14]
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5 0
3 years ago
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