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3 years ago

Max has x dollars. Keisha has four more dollars than Max.

Mathematics

2 answers:

viva [34]3 years ago

8 0

The answer is A) if there is not a answer for x+4

Mice21 [21]3 years ago

7 0

Answer:

None of the option is correct.

Step-by-step explanation:

Given : Max has x dollars. Keisha has four more dollars than Max.

To find : What are the expressions ?

Solution :

Max has x dollars.

The expression is 'x'

Keisha has four more dollars than Max.

The expression is 'x+4'

The total amount of money Keisha and Max have together is given by,

$A=x+x+4$

$A=2x+4$

None of the option is correct.

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3 years ago

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3 years ago

Suppose that the sitting back-to-knee length for a group of adults has a normal distribution with a mean of mu equals 24.4 in.

solong [7]

Answer:

$P(X \geq 26.6) = 0.0336$ , which is greater than 0.01. So a back-to-knee length of 26.6 in. is not significantly high.

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:

$\mu = 24.4, \sigma = 1.2$