If two objects attract each other, which is not a possible explanation?
1) one must be negatively charged while the other is positively charged
2) one must be charged while the other is unchanged
3) they must have the same charge
explain
sorry, i picked math they didn't have science.

Autility company burns coal to generate electricity. the cost c(p), (in dollars) of removing p percent of the some stack pollutants is given by c(p)= 85000p/100-p a) find the cost to remove 30% of the pollutant b) find where the function is undefined

An alien has just landed from the planet, iksnimak. he would like to leam how to add two fractions when thedenominators are the same. write a paragraph that explains to our alien friend, in your own words, the detailsabout how to add the fractions, how to change the result to a mixed number, and how to reduce the fractionpart. use this problem as your example: the two fractions are 5/8 & 7/8

For the given quadratic equation convert into vertex form, find the vertex and find the value for x=6 y=-2x^2+2x+2