Jerry thought four DVDs $425.20. What was the unit rate?

Mathematics

1 answer:

Romashka-Z-Leto [24]3 years ago

8 0

the answer is 106.30

You might be interested in

Suppose that 4.5% of the people in the world have a particular genetic defect and that a screening test is 81% accurate for peop

barxatty [35]

0.955 * 1300 = 1241.5. 0.88 * 1241.5 = 1092.52 Round 1092.52 to 1093. That's the only answer I can think of.

4 0

3 years ago

The gift costs $12.67 and the sales tax is 5.3% what is this total cost

Alenkasestr [34]

Answer:

$13.34

Step-by-step explanation:

3 0

3 years ago

In its Fuel Economy Guide for 2016 model vehicles, the Environmental Protection Agency gives data on 1170 vehicles. There are a

Murrr4er [49]

Answer:

The first quartile of the distribution of gas mileage is 19.6925 mpg.

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 problem, we have that:

$\mu = 23, \sigma = 4.9$

What is the first quartile of the distribution of gas mileage?

The first quartile has a proportion of 0.25. So this is the value of X when Z has a pvalue of 0.25. It happens between Z = -0.67 and Z = -0.68, so i am going to use $Z = -0.675$