Într-o livadă sunt peri pruni și gutui pruni sunt de 2 ori mai multe decât peri și gutui cu 56 mai multe decât peri în total sunt 168 câți peri sunt în livadă Rezolvă problema prin metoda mersului invers​

How to solve a simultaneous equation involved with fractions?

Cor d? ? 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.

Calculate the average rate of change over the interval [1, 3] for the following function. f(x)=4(5)^x a. -260 b. 260 c. 240 d. -240