What is the first step to solving the equation x/3 +7= -1?

Mathematics

1 answer:

juin [17]3 years ago

5 0

Answer:

x=-24

Step-by-step explanation:

1. but first multiply both sides by 3

x+21= -3

2. then move the constant to the right.

x= -3-21

3. calculate the difference

x= -24

hope this helps you!!!!

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Answer:

$0.2564\text{ pounds}$

Step-by-step explanation:

The 90th percentile of a normally distributed curve occurs at 1.282 standard deviations. Similarly, the 10th percentile of a normally distributed curve occurs at -1.282 standard deviations.

To find the $X$ percentile for the television weights, use the formula:

$X=\mu +k\sigma$ , where $\mu$ is the average of the set, $k$ is some constant relevant to the percentile you're finding, and $\sigma$ is one standard deviation.

As I mentioned previously, 90th percentile occurs at 1.282 standard deviations. The average of the set and one standard deviation is already given. Substitute $\mu=5$ , $k=1.282$ , and $\sigma=0.1$ :