Bella measured these outside temperatures for each of four days.

Mathematics

1 answer:

kap26 [50]2 years ago

4 0

What is the complete question and what are the choices??

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Cindy works on the weekends at the local coffee shop. Last Saturday she worked 7.5 hours and

Goshia [24]

Answer: H. 139.50

Step-by-step explanation:

Multiply 9 by 8 first and you get 72. Then multiply 9 by 7.5 and you get 67.5 then add 72 and 67.5 and you get 139.5 or 139.50

6 0

2 years ago

Maggie spent half of the money in her savings account on a new computer.if the computer was $345, how much money was in her savi

sergejj [24]

Answer:

$690

Step-by-step explanation:

all you have to do is multiply $345 by 2 since she spent half of her money

7 0

3 years ago

The diameters of bolts produced in a machine shop are normally distributed with a mean of 5.725.72 millimeters and a standard de

suter [353]

Answer:

Top 5% is 5.84 milliters and the bottom 5% is 5.60 millimeters.

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:

$\mu = 5.72, \sigma = 0.07$