Help on this please.

Mathematics

1 answer:

olga55 [171]2 years ago

4 0

Answer:

total - given, 360 -139 = 221

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Nylan spent $16.72 on 12 ice cream bars. Her cost include $1.24 sales tax how much did each ice cream bar cost before the sales

Ymorist [56]

Answer:

if you use a calculator its easy

16.72 - 1.24 = 15.48

15.48 divided by 12 is 1.29

for sales tax 1.24 divided by 12 is .10

so for each one She spent $1.39

3 0

3 years ago

Read 2 more answers

According to an NRF survey conducted by BIGresearch, the average family spends about $237 on electronics (computers, cell phones

schepotkina [342]

Answer:

7.64% probability that they spend less than $160 on back-to-college electronics

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:

$\mu = 237, \sigma = 54$