Simplify the expression 1.8-0.2x equallys -1.6. step by step plzzz i will give you 100 points

Someone this asap for a group of students attends a basketball game. * the group buys x hot dogs at the concession stand for $2 each. * the group buys y drinks at the concession stand for $3 each. the group buys 29 items at the concession stand for a total of $70. how many hot dogs did the group buy?

Math each whole number with a rational,exponential expression

The two square pyramids are similar. find the total volume of both pyramids if the ratio of their surface areas is 9/16