Plz answer the questions below

Mathematics

1 answer:

kap26 [50]3 years ago

6 0

Answer:

first figure: y=70

second figure: Guessing that that number is 99, x=99, y=99, z=81

third figure: x=180-48-77=55 x=55

Step-by-step explanation:

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6r = 3 (r - 4 ) - r<br> Pls help

____ [38]

Answer:

6=r

r*4-r

6*4=24

24-6=18

Step-by-step explanation:

im srry if its wrong

8 0

4 years ago

Read 2 more answers

A machine at Keats Corporation fills 64-ounce detergent jugs. The machine can be adjusted to pour, on average, any amount of det

horrorfan [7]

Answer:

The mean should be 64.63 ounces.

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:

$\sigma = 0.38$

The quality control inspector wants to adjust the machine such that at least 95% of the jugs have more than 64 ounces of detergent. What should the mean amount of detergent poured by this machine into these jugs be?

This is $\mu$ , for which X = 64 will have a pvalue of 1-0.95 = 0.05. So when X = 64, Z = -1.645.

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

$-1.645 = \frac{64 - \mu}{0.38}$