Solve the following problems with solution. 1. In a class of 50 pupils, 24 are boys. What percent of the class are boys and what percent are girls?

2. A vendor had 200 balloons for sale. If he sold 125 of them, what percent remains unsold?

3. In a class of 50 pupils, 75% practice their math skills using online puzzles and exercises on the internet. How many pupils are on their practice?

Needmax 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.

Evaluate the discriminant of each equation. tell how many solutions each equation has and whether the solutions are real or imaginary. x^2 + 4x + 5 = 0

In a 45-45-90 right triangle, what is the ratio of the length of one leg to the length of the other leg? а . 1: 2 в. 2: 1 с. 2: 1 d. 1: 1