Mechanics Solve the following equations for the unknown variable.
1. 3(x – 5) =15
315
2. 12b - 3 = 4 + 5b
3. 0.75(4m + 12) + 15 – 3(2m + 6) = 5(-3m + 1) + 25
I have the answers in the book the school provided I need the steps to the answers the answers in my book appear as
1) x=10
2)b=1
3)m=2
4) x=4, y=2
5)h=5, q=1
6)a=8, b=0.6

The train station clock runs too fast and gains 5 minutes every 10 days. how many minutes and seconds will it have gained at the end of 9 days?

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.

From the top of a tree a bird looks down on a field mouse at an angle of depression of 50°. if the field mouse is 40 meters from the base of the tree, find the vertical distance from the ground to the bird's eyes.