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KonstantinChe [14]
3 years ago
12

Evaluate expressions 9+11g-4h g=2 h=7

Mathematics
1 answer:
UNO [17]3 years ago
6 0
The given expression is :
9 + 11g - 4h. 

substitute h=7 and g = 2 in given expression, 

9 + 11(2) - 4(7) = 3. 

Hope this helps!
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Solve using the quadratic formula. 3x^2+2x+1=0
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4 years ago
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Darya [45]

Answer:

15.87% probability that the car travels more than 53 miles per gallon.

Step-by-step explanation:

Problems of normally distributed samples are 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 problem, we have that:

\mu = 45, \sigma = 8

Find the probability of the following events: A. The car travels more than 53 miles per gallon. Probability

This is the pvalue of Z when X = 53. So

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

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1 - 0.8413 = 0.1587

15.87% probability that the car travels more than 53 miles per gallon.

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