My friend and I both choose numbers. I multiply my number by −2 and subtract 20.19, while my friend adds 2.018 to her number and then divides by −2. Our results are the same. If her number
was originally 4.002, what was my original number?

please answer will give brainlist.

How many sides does a regular polygon have if each exterior angle measure is 45 degrees explain your answer, i really don't understand this.

Aboard 60 in. long is cut two parts so that the longer piece is 5 times the shorter. what are the length of the two pieces?

The ivring berlin learning center would like a possible net profit of $650,000 on its new resource manual it sells to schools. the fixed costs for producing the manual are $780,000 and the variable cost per package is $19.85. if the estimated unit sales are 1,250,000 units, what selling price unit should the ivring berlin learning center try?