A student atterhpted to generate an equivalent expression using the distributive property, as shown below:
5(x - 1) = 5x - 1
What was the mistake made? (1 point)
1) 5 was not multiplied byx.
2) Incorrect sign was used for the first term
3) 5 was not multiplied by -1
4) Incorrect sign was used for the second term
Question 16 (1 point)

Me max recorded the heights of 500 male humans. he found that the heights were normally distributed around a mean of 177 centimeters. which statements about max’s data must be true? a) the median of max’s data is 250 b) more than half of the data points max recorded were 177 centimeters. c) a data point chosen at random is as likely to be above the mean as it is to be below the mean. d) every height within three standard deviations of the mean is equally likely to be chosen if a data point is selected at random.

Answer each of the questions for the following diagram: 1. what type of angles are these? 2. solve for x. what does x equal? 3. what is the measure of the angles?

Cos^2x+cos^2(120°+x)+cos^2(120°-x)i need this asap. pls me